Two-grooved Milk Vetch

Astragalus bisulcatus, Fabaceae

Zones

3–8

Layer

Herbaceous

Lifespan

Perennial

Growth

Moderate

Guild Roles

Nitrogen FixerGround CoverDynamic Accumulator

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Low (established)Moderate (seedling)

Soil pH

6.5 – 8.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Alpine BistortPolygonum viviparum

Nitrogen Fixation

Scarlet GlobemallowSphaeralcea coccinea

Pollinator Sharing

Antagonistic Plants

Burr MedicMedicago polymorpha

Astragalus can accumulate selenium to toxic levels, potentially affecting other legumes in the same soil environment

Purple LocoweedOxytropis lambertii

Both are selenium-accumulating plants that may create toxic soil conditions affecting nearby vegetation

Clasping PepperweedLepidium perfoliatum

Lepidium produces glucosinolates that can inhibit sensitive legume species

Crested WheatgrassAgropyron cristatum

Introduced aggressive grass can suppress native legume establishment and persistence

Uses

Functions

Nitrogen FixationSelenium AccumulationSoil StabilizationWildlife Forage

Common Questions

What zones does Two-grooved Milk Vetch grow in?

Two-grooved Milk Vetch grows in USDA hardiness zones 3 through 8.

Is Two-grooved Milk Vetch a nitrogen fixer?

Yes, Two-grooved 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 Two-grooved Milk Vetch?

Good companions for Two-grooved Milk Vetch include Alpine Bistort, Scarlet Globemallow.

Design guilds with Two-grooved Milk Vetch and see companion relationships visually.

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