Spiny Milkvetch
Astragalus kentrophyta
Last reviewed: June 2026
Spiny Milkvetch (Astragalus kentrophyta) is not on the ASPCA Animal Poison Control Center toxic plant list for dogs or cats (aspca.org, last reviewed 2026-05-21). If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
4"–12" H × 6"–18" W
Bloom
May, Jun, Jul
Native to
AZ, CA, CO, ID and 10 more states
Pollinators
bees
Browse plants for this ecoregion
Spiny milkvetch is a low-growing perennial wildflower that forms compact cushions of small leaves and produces clusters of purple or white pea-like flowers from May through July. This drought-tolerant native thrives in full sun and requires minimal water once established. The plant maintains a neat, compact growth habit that works well in rock gardens and xeriscaped areas.
In an HOA neighborhood
Spiny Milkvetch 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.
- Has spiny stems that may appear unkempt
- Common name includes 'weed' which raises HOA concerns
- Very wild appearance unsuitable for formal landscapes
Wildlife value
The flowers attract native bees and other pollinators during its extended blooming period. This plant provides important nectar sources for beneficial insects in dry landscape settings.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Does Spiny Milkvetch fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.