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Groundcovers with a Weed Suppressive Rating (WSR) of Good to Excellent

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Genus, Species, Cultivar or Biotype
Common Name
Type
Height
Spread
Habit
Aesthetics (flower color, bloom season, foliar interest)
Origin
Hardiness Zone
Preference for:
Salt Tol.**
Sun
Water
Soil
Agropyron cristatum 'Roadcrest'
Roadcrest Crested Wheat Grass
Grass
18-30"
12"
Bunchgrass
-
Eurasia
4
Full sun
Drought tolerant
Well-drained loam
N/A
Alchemilla mollis
Lady's Mantle
Peren
12-18"
24"
Clump forming
Large round leaves that hold moisture droplets
Asia Minor
4-7
Sun or shade
Moist
Well-drained loam
low
Alchemilla mollis 'Thriller'
Lady's Mantle
Peren
6-12"
18"
Compact clump
Large round leaves that hold moisture droplets, bright yellow flowers
Asia Minor
4-7
Sun or shade
Moist
Well-drained loam
low
Ammophila breviligulata 'Cape May'
American Beachgrass
Grass
2-4'
Indefinite
Upright
Gray-green foliage, late summer bloom
NE US
3-8
Full sun
Drought tolerant
Well-drained, sandy
N/A
Andropogon gerardii  'Roundtree'
Big Bluestem
Grass
4-8'
2-3'
Upright
Purple fall colors
E US
3-9
Full sun
Drought tolerant
Well-drained
N/A
Asclepias tuberosa
Butterfly Milkweed
Peren
12-36"
12-24"
Sprawling
Bright orange flowers in terminal cymes in summer
North America
3-9
Full sun
Drought tolerant
Sandy
N/A

Aster ericoides  'Snow Flurry' 
(syn. Symphyotrichum ericoides)

White Heath Aster
Peren
6-8"
12-24'
Sprawling
White flowers early fall
E US
3-9
Full sun
Drought tolerant
Well-drained
mod.
Aurinia saxatilis 'Gold Ball'
Basket of Gold
Peren
4-6"
18"
Mat forming
Evergreen, green-gray foliage, yellow blooms in spring
Europe
3-7
Full sun to moderate shade
Drought tolerant
Well-drained
N/A
Buchloe dactyloides  'Texoka'
Buffalograss
Grass
4-8"
Indefinite
Creeping
Green turf
Central US
1-8
Full sun to moderate shade
Drought and flood tolerant
Tolerates compact soils
N/A
Calamagrostis canadensis
Bluejoint Grass
Grass
60"
-
Rhizomatous
Blue green foliage, summer blooms
North  America
7
Full sun
Moist
Well-drained
N/A
Carex flaccosperma
Blue Wood Sedge (Thinfruit Sedge)
Sedge
6-12"
6-16"
Upright
Wide blue-green foliage
E US
5-8
Moderate shade to shade
Drought tolerant
Tolerates wide range
N/A
Carex glauca
(
syn. flacca)
Heath Sedge (Glaucus Sedge)
Sedge
6-12"
12-15"
Upright
Blue-green foliage
Europe
4-9
Full sun to moderate shade
Drought tolerant
Well-drained
N/A
Ceratostigma plumbaginoides
Blue Leadwood (Plumbago)
Peren
8-12"
12-18"
Semi-prostrate
Blue summer blooms
China
5-9
Full sun
Medium mositure
Well-drained
N/A
Dichanthelium clandestinum  'Tioga' (syn. Panicum c.)
Deertongue
Grass
1-3'
Indefinite
Upright
Yellow blooms spring
E US
5-8
Full sun to moderate shade
Drought tolerant
Well-drained, organic
N/A
Elymus canadensis
Canada Wild Rye
Grass
36-60"
-
Bunchgrass
Nodding long seed head, year round foliage
North  America
3
Full sun
Moist
Well-drained acid soil
N/A
Gypsophila repens
Creeping Baby's Breath
Peren
6"
18-24"
Mat forming
White to pale purple flowers in spring
Europe
3
Full sun
Drought tolerant
Well-drained
N/A
Heuchera americana 'Chocolate Veil'
Alumroot (Coral Bells)
Peren
12-24"
24"
Clump forming
Deep red foliage, delicate pink flowers
Eastern US
4-9
Full sun to moderate shade
Moist
Moist, fertile
N/A
Leymus arenarius 'Blue Dune'*
Blue Lyme Grass
Grass
24-36"
Indefinite
Creeping grass
Blue foliage, attractive seed head
Europe
2-9
Full sun to moderate shade
Drought tolerant
Well-drained
N/A
Liriope spicata 'Majestic'
Creeping Lily Turf
Peren
8-12"
12"
Clump forming
Evergreen grass-like foliage, purple flower spikes
China, Japan
4-10
Sun or shade
Drought tolerant
Any well-drained
N/A
Lysimachia punctata 'Alexander'
Large Yellow Loosestrife
Peren
2-3'
9-12"
Erect
Yellow summer blooms in whorls, green and white variagated foliage
Eur/Asia
4-9
Full sun to moderate shade
Moist
Well-drained
N/A
Mentha x piperita*
Peppermint
Peren
12-24"
Indefinite
Spreadig
Blue flowers in summer
Europe
3-8
Full sun to moderate shade
Moist
Any
N/A
Nepeta subsessilis
Catmint
Peren
12-18"
24"
Upright
Blue flowers in summer
Japan
5-9
Full sun to moderate shade
Moist
Well-drained
N/A
Nepeta x faassenii 'Walker's Low'
Catmint
Peren
18-24"
24-36"
Upright
Long lasting blue flowers in spring-summer
Eurasia, Africa
3-9
-
Drought tolerant
Any well-drained
low
Phlox subulata 'Emerald Blue'
Moss Phlox
Peren
4-6"
24"
Mat forming
Profusion of early spring blue blooms, evergreen
Northeastern US
3-9
Full sun to moderate shade
Moist
Well-drained loam
mod.
Potentilla nepalensis 'Shogran'
Nepal Cinquefoil
Peren
12"
Indefinite
Trailing
Crimson flowers in summer
Himalayas
5-9
Full sun
Moist
Well-drained
N/A
Rubus tricolor x R. fockeanus 'Betty Ashburner'
Creeping Raspberry
Woody
4-6"
Indefinite
Spreading
Rugose dark glossy larger evergreen leaves
Taiwan
7
Full sun to moderate shade
Drought tolerant
Well-drained
N/A
Rudbeckia fulgida 'Goldstrum'
Orange Coneflower (Black-eyed Susan)
Peren
18-30"
12-24"
Erect
Daisy-like bright orange-yellow flowers with black centers
E US
3-9
Full sun to moderate shade
Moist
Well-drained
N/A
Schizachyrium scoparium (syn. Andropogon scoparium) 'The Blues'
Little Bluestem
Grass
24-48"
18-24"
Bunchgrass
Slender blue-green leaves turning to bronze in fall
Eastern North America
3-9
Full sun
Drought tolerant
Well-drained
N/A
Sedum spurium 'John Creech'
Two-row Stonecrop
Peren
3-6"
3-12"
Creeping
Pink flowers fall, fleshy evergreen leaves
Europe
3-8
Full sun to moderate shade
Drought tolerant
Well-drained
N/A
Solidago sphacelata 'Golden Fleece'
Autumn Goldenrod
Peren
18-24"
24-36"
Upright
Late summer yellow blooms
Southeastern US
3-8
Full sun to moderate shade
Drought tolerant
Well-drained
high
Sporobolus heterolepis
Northern Prairie Dropseed
Grass
36"
-
Bunchgrass
Fine textured grass blooming late summer
North America
4
Full sun
Drought tolerant
Well-drained
N/A
Stachys byzantina
Lamb's Ears
Peren
12-18"
24-36"
Clump forming
Evergreen, gray-green wooly foliage
Caucasus
4-8
Full sun
Drought tolerant
Well-drained
mod.
Teucrium canadense (syn. prostrata)
Canada Germander
Peren
6-12"
24-30"
Spreading
Pale purple flowers in summer, dark green fine foliage
North America
5-8
Full sun to moderate shade
Drought tolerant
Well-drained
N/A
Thymus serpyllum 'Suffolk County'
Creeping Wild Thyme
Peren
1-3"
Indefinite
Mat forming subshrub
Red foliage, purple summer flowers
Europe, Asia
3-9
Full sun to moderate shade
Drought tolerant
Well-drained, no lime
N/A
Veronica peduncularis 'Waterperry'
Speedwell
Peren
4-6"
12-18"
Spreading
Pale blue flowers summer, fine foliage
Asia
5-8
Full sun to moderate shade
Moist
Well-drained
N/A

*We have found this species to be an aggressive spreader by seed, rhizome, or both. It is potentially weedy and/or invasive. Proceed with caution.
** Cells with N/A indicate that the plant species was not tested for salt tolerance in the greenhouse at Cornell.

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