Slide 1
Utility Groundcovers
Slide 2
What kind of scenarios might dictate a groundcover that isn’t one of the 4 turfgrasses we’ve learned?
Slopes for Erosion Control
Green Roofs
Ditches (and other utility areas)
Native / Reclaimed plantings
manmade meadows
true reclamation projects
Low Maintenance Landscape designs (consider bunch type grasses for an Oriental garden feel).
Slide 3
Low Maintenance Groundcovers
Features:
Occasional mowing
No watering
No fertilizing
Characteristics:
Drought tolerance
Speed of establishment
Root type
Widely adapted soil preference
Rate of spread
Slide 4
Low Maintenance Grasses…
The Non-Fescues
Slide 5
Telling these grasses apart...
Slide 6
28 Poas are tracked in Alberta Conservation Information Management System
Canada Bluegrass - Poa compressa - Non-Native!
Adapted to infertile, poorly drained soils
Very winter hardy
Familiar Genera - “low maintenance blends”
Fescues are common as well
15 are native, including F. rubra
Most of what we use are introduced (Tall, Chewings, Sheeps, Meadow)
Slide 7
Many ornamentals are natives
Pay attention to growth habit/reproductive tillering
is it actually low maintenance?
Is it warm season or cool season?
Other Grasses (Front Lawn/Garden hybrid design)
http://photobotanic.photoshelter.com/image/I0000mk_9OjacAa8
Slide 8
Commonly used as Pasture Grass
Excellent for erosion control
Do not use adjacent to natural areas unless you KNOW it is native! (very difficult to control) - these are some that are classed as “invaders”
Agricultural/Ditch grasses
Bromus - Smooth Brome
Agropyron - Crested Wheatgrass
Phleum - Timothy
Agrostis - Red Top
Slide 9
Agricultural/Ditch grasses
Foxtail Barley
Weed - animals cannot eat it
Bunch type, spreads via seed
Alkaligrass
Moist, saline soils
Sod forming
Slide 10
Native in Alberta and/or introduced
Attractive inflorescence or foliage
Good for low - no mow boulevards and island beds
Be sure to contain them!
“Mat forming” vs “Clumping”
Ornamental grasses
Bouteloua - Blue Grama
Phalaris - Ribbon Grass
Koeleria - Junegrass
Deschampsia -
Tufted Hair grass
Slide 11
Low Maintenance Legumes
Compensate for poor quality soil
Root system contains bacteria that form nodules
Capable of fixing free nitrogen
Intolerance to herbicides (2,4-D)
Alfalfa
Crown Vetch
Bird’s Foot Trefoil
Slide 12
Clover
Low N fixation
long lived seeds
Sweet flowers
Bee Turf plant
Slide 13
Bee turf contains:
sweet alyssum (attracts predatory insects)
clovers (N fixer, pollinator)
fescues (low needs)
yarrow (native, pollinator plant)
English daisy (pollinator)
Roman chamomile (pollinator)
500g = 400 ft/square
Slide 14
Slide 15
The same “bee turf” landscape 3 years after establishment… thoughts?
Slide 16
What was formerly considered unacceptable, is now being embraced as more sustainable and beneficial for pollinators…
Slide 17
Sedum Tiles (aka Sedum “sod”, or Sedum “turf”)
Sod - like product, or in tiles
Originally produced for green roof installation
As with legumes, susceptible to invasion by broadleaf weeds and rhizomatous grasses
Should be hardy in prairie climates if purchased from prairie grower.
Slide 18
Case Study Moment!
Alone, or in a group, take 15-20 minutes to cruise online and look for a seed blend that you would recommend for our Case Study!
It is a residential property that is being converted to a Daycare.
How will it be used?
What are the primary values you should consider?
Click here to see pictures of the site
Extracted Slide Text and Images
Text and media extracted locally from the presentation.
Slide 1
Utility Groundcovers
Slide 2
What kind of scenarios might dictate a groundcover that isn’t one of the 4 turfgrasses we’ve learned?
Slopes for Erosion Control
Green Roofs
Ditches (and other utility areas)
Native / Reclaimed plantings
manmade meadows
true reclamation projects
Low Maintenance Landscape designs (consider bunch type grasses for an Oriental garden feel).
Slide 3
Low Maintenance Groundcovers
Features:
Occasional mowing
No watering
No fertilizing
Characteristics:
Drought tolerance
Speed of establishment
Root type
Widely adapted soil preference
Rate of spread
Speaker Notes
Reclamation species of grass for low maintenance areas
Reclamation – usually rough work with large equipment
Usually maintained under low to zero conditions…occasional mowing, no watering, no fertilizing,
Looking for drought tolerance, root type, soil preference, speed of spreading
Slide 4
Low Maintenance Grasses…
The Non-Fescues
Speaker Notes
Photo credit: E. Wheale 2015
There are lots of grass options out there other than the 5 species we have looked at, and some of these grasses are even making their way into lawn blends, not just utility blends.
Some of these are native grasses, some are introduced pasture grasses, and some are custom utility blends specifically for erosion control or another purpose, but be wary of those as they may be hyper aggressive growers.
Slide 5
Telling these grasses apart...
Speaker Notes
These grasses are a lot of the classic “ditch” grasses that grow wild in Alberta.
Because the purpose of this class is TURF management, we are not going to get into vernation, ligule, etc. BUT it is worth noting when plants are in the same genus as ones we’ve learned already.
In addition, it is fairly easy to tell them apart when you see their inflorescence. Take note of the differences between them… as well as where they are especially good at growing, and which ones are INVASIVE in natural areas.
Slide 6
28 Poas are tracked in Alberta Conservation Information Management System
Canada Bluegrass - Poa compressa - Non-Native!
Adapted to infertile, poorly drained soils
Very winter hardy
Familiar Genera - “low maintenance blends”
Fescues are common as well
15 are native, including F. rubra
Most of what we use are introduced (Tall, Chewings, Sheeps, Meadow)
Slide 7
Many ornamentals are natives
Pay attention to growth habit/reproductive tillering
Very drought tolerant, needs little water or fertilizer, well suited for hillside reclamation, Will tolerate some mowing, Spreads by seeds,
Agropyron cristatum:
most drought tolerant non-fescue reclamation grass; excellent for zero maintenance, adaptable to a wide range of soil types; good for hillsides, slopes, erosion prone areas; also spreads by seeds and can be very invasive in natural/native areas. It was planted in Kananaskis in a native planting area and soon took over. It has caused a lot of outrage and a control nightmare now trying to remove it from the area it doesn’t belong.
Agrostis alba
Originally came from Europe. Used in pasture mixes under humid conditions but is low in palatability. A sod forming, develops rapidly from seed and establishes well in moist soils, along roadsides and on open ground. It is often used for erosion control until slower-growing grasses become established. It is rarely seeded alone.
Phleum ssp. or Phleum pratense
Used for soil stabilization projects, road side seeding, streambank reclamation. Tolerates some mowing, prefers moist humid and full sun, good forage
Slide 9
Agricultural/Ditch grasses
Foxtail Barley
Weed - animals cannot eat it
Bunch type, spreads via seed
Alkaligrass
Moist, saline soils
Sod forming
Slide 10
Native in Alberta and/or introduced
Attractive inflorescence or foliage
Good for low - no mow boulevards and island beds
Be sure to contain them!
“Mat forming” vs “Clumping”
Ornamental grasses
Bouteloua - Blue Grama
Phalaris - Ribbon Grass
Koeleria - Junegrass
Deschampsia -
Tufted Hair grass
Speaker Notes
Blue Grama - Native in Alberta - Mat forming - erosion control and highways
Ribbon grass - pretty red hue in the Fall - but VERY invasive - thick white rhizomes.
Tufted Hair Grass - species is native to Alberta
Slide 11
Low Maintenance Legumes
Compensate for poor quality soil
Root system contains bacteria that form nodules
Capable of fixing free nitrogen
Intolerance to herbicides (2,4-D)
Alfalfa
Crown Vetch
Bird’s Foot Trefoil
Speaker Notes
When legume dies after 3-5 years its root system breaks down in the soil providing nutrients and organic matter which help to improve the soil structure
Downside – intolerant to herbicides – very sensitive so would be affected if spraying for weeds
Alfalfa - Very drought tolerant, Highest nitrogen fixation of all legumes, Will tolerate occasional mowing, Smells nice
Crown vetch - Penngift is an attractive, perennial, ground cover. Crown vetch can be an invasive plant and should NOT be planted in lawns or crop areas. It is difficult to remove once established. This plant item is intended for use in certain situations such as for erosion control in difficult to access hillsides, certain wildlife plantings, ground cover plantings, etc. During the flowering season, it is a heavy producer of white, pink, and lavender flowers. It is a creeping plant with semi-vining growth habits which produce considerable foliage that grows up to 18 - 24 inches. It is very competitive and will crowd out most weeds with time. It develops an extensive root system to make it drought tolerant. It is used primarily for roadside seedings and for landscaping hillside erosion where a low-growing perennial flower is desired that doesn't need mowed. Crown vetch is also used for wildlife foraging such as a deer food plot. Because crown vetch is slow to establish, a companion crop of creeping red fescue or annual ryegrass at 1 pound per 1,000 square feet provides initial cover. A rough, cloddy seedbed is satisfactory.
Bird’s foot trefoil - Tolerates very poor soils & wide pH range, and poor drainage. Heat-resistant. Salt-tolerant. Attractive yellow flowers. Seed (with inoculant), crown division, or cuttings Can seed with ryegrass or oats. May be mowed. Available.
Slide 12
Clover
Low N fixation
long lived seeds
Sweet flowers
Bee Turf plant
Speaker Notes
Lowest potential for nitrogen fixation
Common ones used are white and red – this one is White Dutch clover
Well adapted to wet or dry soils
Thrives under regular mowing
Stoloniferous
Slide 13
Bee turf contains:
sweet alyssum (attracts predatory insects)
clovers (N fixer, pollinator)
fescues (low needs)
yarrow (native, pollinator plant)
English daisy (pollinator)
Roman chamomile (pollinator)
500g = 400 ft/square
Slide 14
Speaker Notes
photo e kawahara 2019
Slide 15
The same “bee turf” landscape 3 years after establishment… thoughts?
Speaker Notes
Photo C. Bach 2022
Slide 16
What was formerly considered unacceptable, is now being embraced as more sustainable and beneficial for pollinators…