When does Canada milkvetch bloom?

Canada milkvetch typically flowers from May through July, producing dense upright clusters of pale yellow to cream colored blooms.

What pollinators are attracted to Canada milkvetch?

Bees and butterflies regularly visit the flowers of Canada milkvetch to feed on nectar and pollen during its summer bloom period.

What growing conditions suit Canada milkvetch best?

This forb prefers full sun and tolerates low to medium moisture, which is why it does well in dry prairies, open grasslands and roadside settings.

Is Canada milkvetch a woody plant?

No, it is an herbaceous forb. Its stems and foliage die back each year rather than persisting as woody growth.

Is Canada Milk-vetch toxic to livestock?

Canada Milk-vetch is listed as toxic to grazing livestock such as cattle, sheep, and goats (slight severity) by the USDA PLANTS Database. This is separate from pet (dog and cat) toxicity.

Is Canada Milk-vetch HOA-friendly?

Canada Milk-vetch takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Canada Milk-vetch

Name: Pollinator Patch
Author: Pollinator Patch

Astragalus canadensis

Last reviewed: August 2026

Astragalus canadensis, or Canada milkvetch, is a full sun forb with low water needs that blooms cream to pale yellow flowers from May through July in prairies, meadows and open roadsides, drawing bees and butterflies.

Canada Milk-vetch (Astragalus canadensis) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org (opens in new tab), last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Canada Milk-vetch is listed as toxic to grazing livestock (cattle, sheep, and goats) at a slight level by the USDA PLANTS Database (opens in new tab). This is a livestock indicator and is separate from pet toxicity.

Light

full sun

Water

low

Size

12"–36" H × 6"–18" W

Bloom

May, Jun, Jul

Native to

AL, AR, CA, CO and 37 more states

Pollinators

bees, butterflies

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Canada milk-vetch is a native legume that forms upright clumps with delicate compound leaves and spikes of cream-colored flowers. This drought-tolerant perennial blooms from May through July and goes dormant in winter. It's well-suited for sunny, low-water gardens where it can naturalize over time.

Growing Canada Milk-vetch

Grow Canada Milk-vetch in full sun and low water. Mature plants reach 12 to 36 inches tall and spread 6 to 18 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Canada Milk-vetch takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Can appear weedy or wild to conventional tastes
May spread beyond intended boundaries
Dies back completely in winter leaving bare spots

Wildlife value

The flowers attract native bees and butterflies during the long summer bloom period. As a legume, it also helps improve soil nitrogen for neighboring plants.

Common questions

When does Canada milkvetch bloom?: Canada milkvetch typically flowers from May through July, producing dense upright clusters of pale yellow to cream colored blooms.
What pollinators are attracted to Canada milkvetch?: Bees and butterflies regularly visit the flowers of Canada milkvetch to feed on nectar and pollen during its summer bloom period.
What growing conditions suit Canada milkvetch best?: This forb prefers full sun and tolerates low to medium moisture, which is why it does well in dry prairies, open grasslands and roadside settings.
Is Canada milkvetch a woody plant?: No, it is an herbaceous forb. Its stems and foliage die back each year rather than persisting as woody growth.
Is Canada Milk-vetch toxic to dogs?: Canada Milk-vetch is not on the ASPCA Animal Poison Control Center toxic plant list for dogs (aspca.org).
Is Canada Milk-vetch toxic to cats?: Canada Milk-vetch is not on the ASPCA Animal Poison Control Center toxic plant list for cats (aspca.org).
Is Canada Milk-vetch toxic to livestock?: Canada Milk-vetch is listed as toxic to grazing livestock such as cattle, sheep, and goats (slight severity) by the USDA PLANTS Database. This is separate from pet (dog and cat) toxicity.
Is Canada Milk-vetch HOA-friendly?: Canada Milk-vetch takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

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