Canadian Milk Vetch

Astragalus canadensis, Fabaceae

Zones

2–8

Layer

Herbaceous

Lifespan

Perennial

Growth

Moderate

Guild Roles

Nitrogen FixerPollinator AttractorBeneficial Insect HabitatGround Cover

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Moderate (established)High (seedling)

Soil pH

6 – 8

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Hillside BlueberryVaccinium pallidum

Nitrogen FixationBeneficial Insect Habitat

Silvery LupineLupinus argenteus

Nitrogen FixationPollinator Sharing

Flat-topped GoldenrodEuthamia graminifolia

Nitrogen Fixation

Slender WheatgrassElymus trachycaulus

Nitrogen FixationPollinator Sharing

Soapweed YuccaYucca glauca

Wind ProtectionNitrogen Fixation

Hairy Golden AsterHeterotheca villosa

Pollinator SharingPest Deterrent

Antagonistic Plants

Ponderosa PinePinus ponderosa

Pine allelopathy and shade prevent milk vetch establishment and nitrogen fixation

Uses

Functions

Nitrogen FixationPollinator SupportSoil ImprovementPrairie Restoration

Edible Parts

Young PodsSeeds

Medicinal Uses

Respiratory SupportImmune System

Common Questions

What zones does Canadian Milk Vetch grow in?

Canadian Milk Vetch grows in USDA hardiness zones 2 through 8.

Is Canadian Milk Vetch a nitrogen fixer?

Yes, Canadian Milk Vetch is a nitrogen fixer and can help provide nitrogen to neighboring plants in a guild or polyculture.

What are good companion plants for Canadian Milk Vetch?

Good companions for Canadian Milk Vetch include Hillside Blueberry, Silvery Lupine, Flat-topped Goldenrod, Slender Wheatgrass, Soapweed Yucca.

Design guilds with Canadian Milk Vetch and see companion relationships visually.

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