Olds College LHAP Nursery Inspections_ Creating and enforcing plant quality specifications _ DeepRoot Blog
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Nursery Inspections_ Creating and enforcing plant quality specifications _ DeepRoot Blog

LHAP 206-61-10350 (WI25) - Softscape Install & Pruning/Course/Woody Plant Selection and Installation/Other Resources/Nursery Inspections_ Creating and enforcing plant quality specifications _ DeepRoot Blog.htm

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<!DOCTYPE html> <html lang="en-US"> <head> <meta charset="UTF-8" /> <link rel="icon" type="image/x-icon" href="/favicon.ico"> <title>Nursery Inspections: Creating and enforcing plant quality specifications | DeepRoot Blog</title> <meta name='robots' content='index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1' /> <link rel="alternate" hreflang="en" href="https://www.deeproot.com/blog/blog-entries/nursery-inspections-creating-and-enforcing-plant-quality-specifications/&quot; /> <link rel="alternate" hreflang="x-default" href="https://www.deeproot.com/blog/blog-entries/nursery-inspections-creating-and-enforcing-plant-quality-specifications/&quot; /> <!-- This site is optimized with the Yoast SEO plugin v26.8 - https://yoast.com/product/yoast-seo-wordpress/ --> <title>Nursery Inspections: Creating and enforcing plant quality specifications | DeepRoot Blog</title> <link rel="canonical" href="https://www.deeproot.com/blog/blog-entries/nursery-inspections-creating-and-enforcing-plant-quality-specifications/&quot; /> <meta property="og:locale" content="en_US" /> <meta property="og:type" content="article" /> <meta property="og:title" content="Nursery Inspections: Creating and enforcing plant quality specifications | DeepRoot Blog" /> <meta property="og:description" content="Many trees purchased from nurseries may have significant defects that can reduce the useful life of the tree. This isn’t just speculation; there is good evidence that large segments of the nursery industry are supplying defective plants. Brian Kane at the Urban Tree Foundation and Ed Gilman at the University of Florida, both respected researchers... More" /> <meta property="og:url" content="https://www.deeproot.com/blog/blog-entries/nursery-inspections-creating-and-enforcing-plant-quality-specifications/&quot; /> <meta property="og:site_name" content="Deeproot" /> <meta property="article:published_time" content="2017-11-20T15:00:48+00:00" /> <meta property="og:image" content="https://www.deeproot.com/wp-content/uploads/stories/2017/11/16527512897_b1c332ca40_k.jpg&quot; /> <meta property="og:image:width" content="1500" /> <meta property="og:image:height" content="1125" /> <meta property="og:image:type" content="image/jpeg" /> <meta name="author" content="Leda Marritz" /> <meta name="twitter:card" content="summary_large_image" /> <meta name="twitter:label1" content="Written by" /> <meta name="twitter:data1" content="Leda Marritz" /> <meta name="twitter:label2" content="Est. reading time" /> <meta name="twitter:data2" content="14 minutes" /> <script type="application/ld+json" 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class="attachment-post-thumbnail size-post-thumbnail wp-post-image" alt="" decoding="async" fetchpriority="high" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/11/16527512897_b1c332ca40_k.jpg 1500w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/16527512897_b1c332ca40_k-1325x994.jpg 1325w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/16527512897_b1c332ca40_k-1100x825.jpg 1100w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/16527512897_b1c332ca40_k-830x623.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/16527512897_b1c332ca40_k-693x520.jpg 693w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/16527512897_b1c332ca40_k-768x576.jpg 768w" sizes="(max-width: 1500px) 100vw, 1500px" /> </div> </header> <div class="hentry-inner"> <span class="posted-on"><time class="entry-date published" datetime="2017-11-20T07:00:48-08:00">November 20, 2017</time></span> <h2 class="entry-title">Nursery Inspections: Creating and enforcing plant quality specifications</h2> <div class="entry-meta"> Written by <span class="author vcard"><a class="url fn n" href="https://www.deeproot.com/blog/blog-entries/author/deeproot/&quot; title="View all posts by Leda Marritz">Leda Marritz</a></span> | Posted in <span class="entry-cats"><a href="https://www.deeproot.com/blog/blog-entries/category/design/&quot; rel="category tag">Design</a><span class="comma">,</span> <a href="https://www.deeproot.com/blog/blog-entries/category/horticulture/&quot; rel="category tag">Horticulture</a><span class="comma">,</span> <a href="https://www.deeproot.com/blog/blog-entries/category/green-infrastructure-2/urban-trees/&quot; rel="category tag">Urban Trees</a></span> </div><!-- .entry-meta --> <div class="entry-content"> <p>Many trees purchased from nurseries may have significant defects that can reduce the useful life of the tree. This isn’t just speculation; there is good evidence that large segments of the nursery industry are supplying defective plants. Brian Kane at the Urban Tree Foundation and <a href="http://hort.ifas.ufl.edu/woody/pruning.shtml&quot;&gt;Ed Gilman at the University of Florida</a>, both respected researchers in this field, have been observing and reporting on this trend for many years.</p> <p><span id="more-10049"></span></p> <p>Poor branch structure, including co-dominant leaders, can create weak points in the canopy. To recognize these defects landscape architects need to understand the natural branching forms of the trees they specify so that they can detect when this form has been manipulated by the nursery, allowing them to pick healthy specimens. Hidden below the ground are equally deadly defects such as girdling roots and buried root collars, created during different phases of the production process, that can cause poor establishment or tree failure later in life. Combined, defects above and below the ground reduce the trees ability to establish and can cause decline or premature failure.</p> <p>Crown defects have become so common that in some cases they are no longer seen as defects, but rather just the normal appearance of a particular species. Probably the best example of this is the Bradford pear. Pears were heavily used from the 1960’s to the 1990’s as a perfect street tree. They had symmetrical lollypop heads and grew well in difficult soil conditions. But these trees got the reputation of falling apart as they aged, splitting ‘like celery’ from a weak common branch point. This splitting problem isn’t endemic to the species; rather the weak branch points were created by the nursery making pruning cuts that enabled the production of the symmetrical crown. The pruning cuts resulted in multiple codominant branches growing just behind the cut, which were easy for the nursery to exploit into the perfect tree. Other species such as elm, maple and zelkova suffer from similar defects that weaken the tree long after planting. All of these species typically produce few co dominant branches in forest conditions.</p> <div id="attachment_10094" style="width: 2058px" class="wp-caption aligncenter"><a href="/wp-content/uploads/stories/2017/10/Image-1.1-.jpg"><img decoding="async" aria-describedby="caption-attachment-10094" class="size-full wp-image-10094" src="/wp-content/uploads/stories/2017/10/Image-1.1-.jpg" alt="" width="2048" height="1536" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.1-.jpg 2048w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.1--1325x994.jpg 1325w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.1--1100x825.jpg 1100w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.1--830x623.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.1--693x520.jpg 693w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.1--768x576.jpg 768w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.1--1536x1152.jpg 1536w" sizes="(max-width: 2048px) 100vw, 2048px" /></a><p id="caption-attachment-10094" class="wp-caption-text">This failed pear tree is the result of poor nursery pruning practices that created multiple co-dominant leaders.</p></div> <div id="attachment_10093" style="width: 1034px" class="wp-caption aligncenter"><a href="/wp-content/uploads/stories/2017/10/Image-1.2.jpg"><img decoding="async" aria-describedby="caption-attachment-10093" class="size-full wp-image-10093" src="/wp-content/uploads/stories/2017/10/Image-1.2.jpg" alt="" width="1024" height="680" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.2.jpg 1024w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.2-830x551.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.2-783x520.jpg 783w, https://www.deeproot.com/wp-content/uploads/stories/2017/10/Image-1.2-768x510.jpg 768w" sizes="(max-width: 1024px) 100vw, 1024px" /></a><p id="caption-attachment-10093" class="wp-caption-text">These failed maple trees are the result of poor nursery propagation practices that created girdling roots. Photo: Patrick DeCoste</p></div> <p>Over the past 15 years there has been significant research into these defects and how they can be managed. The nursery industry has been slow to correct the practices that create these defects, although the better nurseries are changing production methods. Nonetheless, for the foreseeable future, the burden to source good quality trees for projects will rest with the landscape architects who specify the trees, and nursery inspections will be a critical part of project quality control. The following is a primer that designers can use to create and enforce plant quality specifications.</p> <h2>Specifications</h2> <p>A good specification is the essential foundation for the inspection. They form the basis for acceptance or rejection at the nursery, and the instructions to the contractor to modify the plant stock to correct defects if acceptable plants cannot be sourced. While the following discussion is directed to trees, shrubs have similar sets of defects, particularly in their root stock, that need attention.</p> <p>Fortunately, a good nursery stock specification already exists and its adoption is critical to obtain quality nursery stock. No, it is not the American Standard for Nursery Stock ANSI Z.60, which is mostly a measurement and term definition standard and makes very few statements about the actual quality of the tree. (It is still important to include ANSI Z.60 in a specification as it is needed for important industry references.) The document that must be included in the specification is the plant quality specification produced by the <a href="http://www.urbantree.org&quot;&gt;Urban Tree Foundation</a>. Developed in 2014, it’s a specification template that designers can adapt to their project needs and gives them the tools to demand a different quality than is typically available. This is a complete set of specifications and includes plant quality details as well as plant installation and soil modification.</p> <div id="attachment_10096" style="width: 1257px" class="wp-caption aligncenter"><a href="/wp-content/uploads/stories/2017/11/Image-1.3.jpg"><img loading="lazy" decoding="async" aria-describedby="caption-attachment-10096" class="size-full wp-image-10096" src="/wp-content/uploads/stories/2017/11/Image-1.3.jpg" alt="" width="1247" height="562" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.3.jpg 1247w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.3-1100x496.jpg 1100w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.3-830x374.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.3-768x346.jpg 768w" sizes="auto, (max-width: 1247px) 100vw, 1247px" /></a><p id="caption-attachment-10096" class="wp-caption-text">Crown correction detail from the free, open-source Urban Tree Foundation specification.</p></div> <h2>Client and contractor buy-in</h2> <p>Designers who claim interest in sustainable outcomes must include sustainable plants. Incorporation of these requirements into the plant procurement and installation process requires education of the client and the contractor.</p> <p>The client must be informed of and agree to the higher standard early in the design process, as these higher plant quality standards will add cost to the project including slightly higher plant purchase and installation cost, as well as additional construction administration fees for the landscape architect. The benefit to the client will be more rapid establishment and trees with longer life expectancy and fewer management problems. It is understood that some clients may be only interested in initial project cost and/or may not care about plant quality. For that type of client there may be little value to forcing these ideas into the construction process. (More on contractor buy-in later on in this article.)</p> <h2>Plant pre-purchase</h2> <p>For larger projects, the option for plant pre-purchase offers the best opportunity to attain quality plants because it removes the pressure for quick acceptance and allows a selection of quality nurseries and negotiations to modify the plants during the pre-purchase contract period. If the project schedule affords one growing season in advanced of installation, significant pruning can be accomplished that can turn marginal stock into good quality stock. Below ground plant quality issues can be easily mitigated with time for the tree to adapt to any root loss.</p> <h2>Project submittals</h2> <p>Contractors typically submit proposed nurseries for approval. In an ideal situation, the designer will have included in the project documents a list of acceptable sources and made sure that the plants specified are available, but it cannot be assumed that even the best nurseries are producing defect-free trees. The new specifications should be the basis for acceptance during the inspection phase even at pre-approved nurseries.</p> <p>Discussions with the contractor and the proposed nurseries can set the stage for a successful inspection phase. Reviewing the requirements with the contractor and the nursery ahead of time, including the root collar inspection requirement, will improve the dialogue.</p> <p>Establish that the grower understands that this is not a typical plant tagging exercise and that that you are using a non-standard specification. Explain that for field-grown material the inspection must occur <em>prior</em> to digging. If trees are already dug, your options to inspect and impose modification to the root ball become very limited.</p> <p>Be prepared for resistance; you will need your client’s support at this critical point in the process. Be proactive and start early in the construction sequence to give time for these inspections. As soon as the installing contractor is identified, reach out to them to start the process. If you wait for the submittal to arrive, it may be too late.</p> <h2>Preparing for the inspection</h2> <p>Preparing for the inspection means being educated about the plants you are selecting and having the tools to conduct a thorough evaluation.</p> <p>Understand the juvenile and ultimate forms of the plants that you are inspecting. It is surprising how few designers understand the difference and importance of permanent future branches and temporary branches. For species that mature into large trees with tall, clear trunks, most if not all the lower branches are temporary and the ultimate canopy branching form of the tree may not actually exist. Opposite branching species will have different and more difficult branch management issues than alternate branching species as they mature. Review <em>Structural Pruning: A Guide for the Green Industry</em> by Gilman, Kempf, Matheny and Clark to understand properly pruned young trees.</p> <p>You’ll want to bring your own tools for the inspection. These must include:</p> <ul> <li>Forked hand cultivator and a hand trowel (available at garden stores)</li> <li>Surveyor’s chain pin (available at benmeadows.com)</li> <li>Small tape measure (preferably one that has linear units on one side and diameter units on the other; available at benmeadows.com).</li> <li>White and black grease crayons (available at art stores) or a yellow lumber crayon</li> <li>Sharpie marker</li> <li>Small notepad</li> <li>#2 pencil (they write on wet paper better than pens)</li> <li>Camera (your phone)</li> <li>Plant list and plant quality specification</li> <li>Your office’s numbered plant seals</li> </ul> <div id="attachment_10097" style="width: 2010px" class="wp-caption aligncenter"><a href="/wp-content/uploads/stories/2017/11/Image-1.4_small.jpg"><img loading="lazy" decoding="async" aria-describedby="caption-attachment-10097" class="size-full wp-image-10097" src="/wp-content/uploads/stories/2017/11/Image-1.4_small.jpg" alt="" width="2000" height="2667" /></a><p id="caption-attachment-10097" class="wp-caption-text">Tool kit for a nursery inspection.</p></div> <p>If getting specific trees in certain places is important, a reduced copy of the planting plans will allow tree numbers to be assigned to specific locations. Bring the plant quality section of the specification and any other documentation on plant quality requirements. Dress to spend time in the dirt on your knees and walking thru wet grass. Don’t forget sunscreen, insect repellent, and a hat.</p> <h2>Inspection day</h2> <p>Keep the discussion friendly and light, but be firm with explaining that you will be doing invasive inspections of the root collar. For many nurseries this will be a new experience. Allow a generous amount of time and be sure the grower is prepared to work with you through the process. The inspection time per tree for this process is going to take, at a minimum, twice as long as a more typical nursery inspection. Take good notes and lots of photos.</p> <p>Nursery inspection trips are a critical part of a designer’s ongoing education. Be sure to look at other trees and plants available in the nursery. A block of really wonderful trees not on your list can stimulate design ideas for future projects. Nursery owners love it when you ask “what are those trees” or “can we stop here for a closer look”. Make the day a learning experience.</p> <h3>Inspection above the ground</h3> <p>One of the most important things to recognize is that<em> the trees that meet the specification will likely not have a perfect shape</em>.</p> <p>It is unfortunate that many designers approve trees that they think “look good” without understanding that the very attributes that make a young tree attractive at a young age may be the same features that cause a tree to be defective later in life. Landscape architects must understand basic tree defects and the long-term growth habits of the trees they specify.</p> <p>The inspection of trunks and canopies will be similar to previous inspections, except you will be looking for different items. Young tree branch structure is almost never similar to the mature tree structure. Branch spacing in nursery-produced trees is typically much closer together than naturally growing trees due to previous pruning. Trunk flares will be harder to distinguish. For trees smaller than about 4 inches (10 cm) in caliper many if not all of the branches on the tree when purchased are likely to need to be removed as the tree matures.</p> <div id="attachment_10098" style="width: 288px" class="wp-caption alignleft"><a href="/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478.jpg"><img loading="lazy" decoding="async" aria-describedby="caption-attachment-10098" class=" wp-image-10098" src="/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478.jpg" alt="" width="278" height="371" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478.jpg 1536w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478-1325x1767.jpg 1325w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478-1100x1467.jpg 1100w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478-830x1107.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478-390x520.jpg 390w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478-768x1024.jpg 768w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.5-e1509567203478-1152x1536.jpg 1152w" sizes="auto, (max-width: 278px) 100vw, 278px" /></a><p id="caption-attachment-10098" class="wp-caption-text">Tree pruned to have full crown and many co-dominant leaders.</p></div> <div id="attachment_10099" style="width: 289px" class="wp-caption alignleft"><a href="/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263.jpg"><img loading="lazy" decoding="async" aria-describedby="caption-attachment-10099" class=" wp-image-10099" src="/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263.jpg" alt="" width="279" height="372" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263.jpg 1536w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263-1325x1767.jpg 1325w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263-1100x1467.jpg 1100w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263-830x1107.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263-390x520.jpg 390w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263-768x1024.jpg 768w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.6-e1509567253263-1152x1536.jpg 1152w" sizes="auto, (max-width: 279px) 100vw, 279px" /></a><p id="caption-attachment-10099" class="wp-caption-text">Same tree properly pruned to remove co-dominant leaders.</p></div> <p>The new pruning approach will create a more open canopy, and the tree may not present the most dramatic image at the time of planting. Force yourself to select trees with branching that will result in a central leader or that can easily be pruned to have one. Most trees will require some additional pruning (and in some cases significant pruning) to meet these standards. However, trees produced by good growers will typically require minimum additional work.</p> <p>The most common defect in trees results from the grower making a heading cut at the top of the liner early in the growing process to create multiple branches (called codominant leaders) growing from a single point. This creates the dense symmetrical canopy often desired by designers. Leaving co-dominant branches is a significant cause of future branch failure. Determine if some of these leaders can be removed, what kind of a single leader tree would result, and at what impact to future tree shape. A double leader tree can almost always be fixed with only a small kink in the trunk. This kink will slowly straighten as the tree grows.</p> <p>Three branches from the same location can be repaired but with more impact. One or two of the leaders might be partially cut back or reduced rather than immediately removing them at the main stem. Reducing a co-dominant stem (removing about one half to one third of the stem length) slows down the growth of this limb while encouraging the growth of the remaining leader. But this approach requires a second round of pruning two to three years after planting to make a final branch removal cut. This option passes on the problem to a future unknown tree manager who may not be attuned to the branch management process. Four or more leaders from the same point becomes very problematic and rejection is likely the better option. For trees like zelkova there may not be many nursery trees that are suitable.</p> <div id="attachment_10100" style="width: 1510px" class="wp-caption aligncenter"><a href="/wp-content/uploads/stories/2017/11/Image-1.7_small.jpg"><img loading="lazy" decoding="async" aria-describedby="caption-attachment-10100" class="size-full wp-image-10100" src="/wp-content/uploads/stories/2017/11/Image-1.7_small.jpg" alt="" width="1500" height="2000" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.7_small.jpg 1500w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.7_small-1325x1767.jpg 1325w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.7_small-1100x1467.jpg 1100w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.7_small-830x1107.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.7_small-390x520.jpg 390w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.7_small-768x1024.jpg 768w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.7_small-1152x1536.jpg 1152w" sizes="auto, (max-width: 1500px) 100vw, 1500px" /></a><p id="caption-attachment-10100" class="wp-caption-text">Tree with many co-dominant leaders developing from a nursery pruning cut to create a full head. This tree should be replaced.</p></div> <h3>Special cases</h3> <p>What if a ‘character tree’ is desired? Meandering trunks and branching are not structural defects provided that long term structure impact is understood. A double leader tree with a wide branch angle of 90 degrees or more may produce a tree with strong structure well into the future. The branches should have a pronounced ‘U’ shape at the branch union rather than a tight ‘V’ shape. Nurseries are happy to sell what others consider a cull.</p> <h3>Evaluating minor defects</h3> <p>Minor defects such as unhealed pruning cuts, broken branches, and bark abrasions may not be as serious as they appear. They may typically heal and be acceptable. Significant wounds at the base of the tree may be more critical than a similar size wound higher in the canopy. A tree with good branch structure but minor bark damage is preferable to a tree with many co-dominant leaders but no other defects.</p> <p>If there is an option to select trees from a block that are slightly under the specified size but have superior structure, take them. Adherence to the specified size is likely the least critical factor to long term project success. Be flexible about substituting cultivars and even species if you chance on a set of really good trees after rejecting an unacceptable offering.</p> <h3>Diseases, damage, and splitting</h3> <p>Bark diseases, borer damage, and significant bark splitting is a set of conditions that should be noted and is likely a cause for rejection. Designers must develop a knowledge of different types of insects and diseases that affect the types of plants being specified in order to identify affected plants.</p> <div id="attachment_10101" style="width: 253px" class="wp-caption alignleft"><a href="/wp-content/uploads/stories/2017/11/Image-1.8_small.jpg"><img loading="lazy" decoding="async" aria-describedby="caption-attachment-10101" class=" wp-image-10101" src="/wp-content/uploads/stories/2017/11/Image-1.8_small.jpg" alt="" width="243" height="247" srcset="https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.8_small.jpg 2000w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.8_small-1325x1351.jpg 1325w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.8_small-1100x1121.jpg 1100w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.8_small-830x846.jpg 830w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.8_small-510x520.jpg 510w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.8_small-768x783.jpg 768w, https://www.deeproot.com/wp-content/uploads/stories/2017/11/Image-1.8_small-1507x1536.jpg 1507w" sizes="auto, (max-width: 243px) 100vw, 243px" /></a><p id="caption-attachment-10101" class="wp-caption-text">Small trunk wound that is healing and may not be cause for rejection if the rest of the tree is acceptable.</p></div> <p>This does not mean you need the proficiency of a plant pathologist or entomologist. You do not need, for example, to be able to identify a particular canker or insect, but you should be familiar with the basic expressions of insect damage, cankers or fungus infestation in nursery stock. Simply knowing the normal color and texture of a particular species’ bark and leaves should be sufficient to identify when something is irregular. You can always note that something does not look correct and check resources when you get back to the office. Good growers will explain what you are seeing and can be trusted to be give honest explanations. Asking what they think that reddish patch on the bark is will help them to respect you as an interested professional.</p> <h2>Conclusion</h2> <p>The above recommendations are counter to the approach most designers take in the nursery. It requires rethinking our natural inclination to select trees that look best on opening day – but may have long-term problems – rather than looking for trees with more open, and often less symmetrical, structures that are more sustainable and have greater longevity.</p> <p>Inspections of the root system and depth of the trunk flare are equally important, and more complicated. Instructions for how to carefully select nursery trees after a belowground evaluation will be covered in the second half of this series.</p> <p>&nbsp;</p> <p><em>James Urban, FASLA, is an expert in urban trees and soils. He is the author or the book <a href="https://www.amazon.com/Up-By-Roots-James-Urban/dp/B001F93W64&quot; target="_blank" rel="noopener">Up By Roots: Healthy Trees and Soils in the Built Environment</a>. </em></p> <p>Top image: <a href="https://www.flickr.com/photos/herry/16527512897/in/photolist-rbtPLV-o9dCXm-9j8Psf-Rz356z-rk195h-o4VC35-VPdYnf-83962x-nvbEnj-RpESiJ-htCHdp-pJ61kv-WRrErN-713yxk-TdZgiW-BUovEd-Taydfg-bkCGck-aDoimN-4QsB49-eT7kQy-TLPffo-bAb7yY-6ntoyd-YsE3Bs-rgGPXq-qjYy8Z-qnGGWe-838ZBc-gVhFAh-69N1mU-nLGRgv-c1jvGY-xFib-ghmX8-6xfaH8-oq5FSh-8JWD4s-2BPz9-7ZT3B9-3RTKag-9gZgZE-83fJVq-n2m2gh-9F1QYo-WPnd4Y-9QvMN2-q1rZ3k-ekcjKR-7ww6a7&quot;&gt;Herry Lawford</a> / <a href="https://creativecommons.org/licenses/by/2.0/&quot;&gt;&lt;span class="cc-license-identifier">CC BY 2.0</span></a></p> </div> </div> <div id="comments" class="comments-area"> <p><a href="" class="btn" id="open-comment">Leave Your Comment</a></p> <div id="comment-form" style="display:none"> <div id="respond" 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class="cat-item cat-item-37"><a href="https://www.deeproot.com/blog/blog-entries/category/design/history-of-street-trees/&quot;&gt;History of Street Trees</a> </li> <li class="cat-item cat-item-36"><a href="https://www.deeproot.com/blog/blog-entries/category/horticulture/&quot;&gt;Horticulture&lt;/a&gt; </li> <li class="cat-item cat-item-17"><a href="https://www.deeproot.com/blog/blog-entries/category/deeproot-news-2/&quot;&gt;News&lt;/a&gt; </li> <li class="cat-item cat-item-40"><a href="https://www.deeproot.com/blog/blog-entries/category/policy/&quot;&gt;Policy&lt;/a&gt; </li> <li class="cat-item cat-item-62"><a href="https://www.deeproot.com/blog/blog-entries/category/products/&quot;&gt;Products&lt;/a&gt; </li> <li class="cat-item cat-item-64"><a href="https://www.deeproot.com/blog/blog-entries/category/research/&quot;&gt;Research&lt;/a&gt; </li> <li class="cat-item cat-item-13"><a href="https://www.deeproot.com/blog/blog-entries/category/products/root-barrier/&quot;&gt;Root Barrier</a> </li> <li class="cat-item cat-item-10"><a href="https://www.deeproot.com/blog/blog-entries/category/products/silva-cell/&quot;&gt;Silva Cell</a> </li> <li class="cat-item cat-item-20"><a href="https://www.deeproot.com/blog/blog-entries/category/green-infrastructure-2/soil/&quot;&gt;Soil&lt;/a&gt; </li> <li class="cat-item cat-item-11"><a href="https://www.deeproot.com/blog/blog-entries/category/green-infrastructure-2/stormwater-management/&quot;&gt;Stormwater Management</a> </li> <li class="cat-item cat-item-6"><a href="https://www.deeproot.com/blog/blog-entries/category/green-infrastructure-2/urban-trees/&quot;&gt;Urban Trees</a> </li> <li class="cat-item cat-item-22"><a href="https://www.deeproot.com/blog/blog-entries/category/design/utilities/&quot;&gt;Utilities&lt;/a&gt; </li> <li class="cat-item cat-item-25"><a href="https://www.deeproot.com/blog/blog-entries/category/video/&quot;&gt;Video&lt;/a&gt; </li> </ul> </aside> <aside id="recent-posts-3" class="widget widget_recent_entries"> <h4 class="widget-title">Recent Posts</h4> <ul> <li> <a href="https://www.deeproot.com/blog/blog-entries/strongback-advantage/&quot;&gt;How Silva Cells Get Soil Right: The Strongback Advantage</a> </li> <li> <a href="https://www.deeproot.com/blog/blog-entries/welcome-haider-nasrullah/&quot;&gt;DeepRoot Expands Our Ontario Team: Welcome Haider Nasrullah</a> </li> <li> <a href="https://www.deeproot.com/blog/blog-entries/investment-vs-returns-for-healthy-urban-trees-lifecycle-cost-analysis/&quot;&gt;Lifecycle Value of Silva Cells: Research Proves Long-Term Value</a> </li> <li> <a href="https://www.deeproot.com/blog/blog-entries/rethinking-setback-requirements/&quot;&gt;Rethinking Setback Requirements for City Trees</a> </li> <li> <a href="https://www.deeproot.com/blog/blog-entries/more-with-less-space/&quot;&gt;Marino Cell Does More with Less Space: Research and Results</a> </li> </ul> </aside><aside id="archives-2" class="widget widget_archive"><h4 class="widget-title">Archives</h4> <ul> <li><a href='https://www.deeproot.com/blog/blog-entries/2026/02/&#x27;&gt;February 2026</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2026/01/&#x27;&gt;January 2026</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/12/&#x27;&gt;December 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/10/&#x27;&gt;October 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/09/&#x27;&gt;September 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/08/&#x27;&gt;August 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/07/&#x27;&gt;July 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/06/&#x27;&gt;June 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/05/&#x27;&gt;May 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/04/&#x27;&gt;April 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/03/&#x27;&gt;March 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/02/&#x27;&gt;February 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2025/01/&#x27;&gt;January 2025</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/12/&#x27;&gt;December 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/10/&#x27;&gt;October 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/09/&#x27;&gt;September 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/08/&#x27;&gt;August 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/07/&#x27;&gt;July 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/05/&#x27;&gt;May 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/04/&#x27;&gt;April 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/03/&#x27;&gt;March 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2024/01/&#x27;&gt;January 2024</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/12/&#x27;&gt;December 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/09/&#x27;&gt;September 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/08/&#x27;&gt;August 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/07/&#x27;&gt;July 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/06/&#x27;&gt;June 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/05/&#x27;&gt;May 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/03/&#x27;&gt;March 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/02/&#x27;&gt;February 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2023/01/&#x27;&gt;January 2023</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2022/06/&#x27;&gt;June 2022</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2022/04/&#x27;&gt;April 2022</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2022/03/&#x27;&gt;March 2022</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2022/02/&#x27;&gt;February 2022</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2022/01/&#x27;&gt;January 2022</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/12/&#x27;&gt;December 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/11/&#x27;&gt;November 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/10/&#x27;&gt;October 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/08/&#x27;&gt;August 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/07/&#x27;&gt;July 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/06/&#x27;&gt;June 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/05/&#x27;&gt;May 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/04/&#x27;&gt;April 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/03/&#x27;&gt;March 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/02/&#x27;&gt;February 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2021/01/&#x27;&gt;January 2021</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/12/&#x27;&gt;December 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/11/&#x27;&gt;November 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/10/&#x27;&gt;October 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/09/&#x27;&gt;September 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/08/&#x27;&gt;August 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/07/&#x27;&gt;July 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/06/&#x27;&gt;June 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/05/&#x27;&gt;May 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/04/&#x27;&gt;April 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/03/&#x27;&gt;March 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/02/&#x27;&gt;February 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2020/01/&#x27;&gt;January 2020</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/12/&#x27;&gt;December 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/11/&#x27;&gt;November 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/10/&#x27;&gt;October 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/09/&#x27;&gt;September 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/08/&#x27;&gt;August 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/07/&#x27;&gt;July 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/06/&#x27;&gt;June 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/05/&#x27;&gt;May 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/04/&#x27;&gt;April 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2019/03/&#x27;&gt;March 2019</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/10/&#x27;&gt;October 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/07/&#x27;&gt;July 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/06/&#x27;&gt;June 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/05/&#x27;&gt;May 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/04/&#x27;&gt;April 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/03/&#x27;&gt;March 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/02/&#x27;&gt;February 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2018/01/&#x27;&gt;January 2018</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/12/&#x27;&gt;December 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/11/&#x27;&gt;November 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/10/&#x27;&gt;October 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/09/&#x27;&gt;September 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/08/&#x27;&gt;August 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/07/&#x27;&gt;July 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/06/&#x27;&gt;June 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/05/&#x27;&gt;May 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/04/&#x27;&gt;April 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/03/&#x27;&gt;March 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/02/&#x27;&gt;February 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2017/01/&#x27;&gt;January 2017</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/12/&#x27;&gt;December 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/11/&#x27;&gt;November 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/10/&#x27;&gt;October 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/09/&#x27;&gt;September 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/08/&#x27;&gt;August 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/07/&#x27;&gt;July 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/06/&#x27;&gt;June 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/05/&#x27;&gt;May 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/04/&#x27;&gt;April 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/03/&#x27;&gt;March 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/02/&#x27;&gt;February 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2016/01/&#x27;&gt;January 2016</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/12/&#x27;&gt;December 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/11/&#x27;&gt;November 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/10/&#x27;&gt;October 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/09/&#x27;&gt;September 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/08/&#x27;&gt;August 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/07/&#x27;&gt;July 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/06/&#x27;&gt;June 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/05/&#x27;&gt;May 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/04/&#x27;&gt;April 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/03/&#x27;&gt;March 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/02/&#x27;&gt;February 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2015/01/&#x27;&gt;January 2015</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/12/&#x27;&gt;December 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/11/&#x27;&gt;November 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/10/&#x27;&gt;October 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/09/&#x27;&gt;September 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/08/&#x27;&gt;August 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/07/&#x27;&gt;July 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/06/&#x27;&gt;June 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/05/&#x27;&gt;May 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/04/&#x27;&gt;April 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/03/&#x27;&gt;March 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/02/&#x27;&gt;February 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2014/01/&#x27;&gt;January 2014</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/12/&#x27;&gt;December 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/11/&#x27;&gt;November 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/10/&#x27;&gt;October 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/09/&#x27;&gt;September 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/08/&#x27;&gt;August 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/07/&#x27;&gt;July 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/06/&#x27;&gt;June 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/05/&#x27;&gt;May 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/04/&#x27;&gt;April 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/03/&#x27;&gt;March 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/02/&#x27;&gt;February 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2013/01/&#x27;&gt;January 2013</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/12/&#x27;&gt;December 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/11/&#x27;&gt;November 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/10/&#x27;&gt;October 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/09/&#x27;&gt;September 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/08/&#x27;&gt;August 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/07/&#x27;&gt;July 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/06/&#x27;&gt;June 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/05/&#x27;&gt;May 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/04/&#x27;&gt;April 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/03/&#x27;&gt;March 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/02/&#x27;&gt;February 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2012/01/&#x27;&gt;January 2012</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/12/&#x27;&gt;December 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/11/&#x27;&gt;November 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/10/&#x27;&gt;October 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/09/&#x27;&gt;September 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/08/&#x27;&gt;August 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/07/&#x27;&gt;July 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/06/&#x27;&gt;June 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/05/&#x27;&gt;May 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/04/&#x27;&gt;April 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/03/&#x27;&gt;March 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/02/&#x27;&gt;February 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2011/01/&#x27;&gt;January 2011</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/12/&#x27;&gt;December 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/11/&#x27;&gt;November 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/10/&#x27;&gt;October 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/09/&#x27;&gt;September 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/08/&#x27;&gt;August 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/07/&#x27;&gt;July 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/06/&#x27;&gt;June 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/05/&#x27;&gt;May 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/04/&#x27;&gt;April 2010</a></li> <li><a href='https://www.deeproot.com/blog/blog-entries/2010/03/&#x27;&gt;March 2010</a></li> </ul> </aside></div><!-- end .wdiget-area --> </div><!-- end #main --> </div> <div class="related-posts-container wrapper"> <h2 align="center">Related Articles</h2> <div class="content-grid related-posts-thumbs"> <article> <div class="post-thumb"> <img width="923" height="520" src="https://www.deeproot.com/wp-content/uploads/stories/2026/01/HOW-SILVA-CELLS-GET-SOIL-RIGHT-The-Strongback-Advantage-923x520.png&quot; class="attachment-thumbnail size-thumbnail wp-post-image" alt="" decoding="async" loading="lazy" srcset="https://www.deeproot.com/wp-content/uploads/stories/2026/01/HOW-SILVA-CELLS-GET-SOIL-RIGHT-The-Strongback-Advantage-923x520.png 923w, https://www.deeproot.com/wp-content/uploads/stories/2026/01/HOW-SILVA-CELLS-GET-SOIL-RIGHT-The-Strongback-Advantage-768x433.png 768w, 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