Western Sweetvetch
Hedysarum occidentale
Last reviewed: July 2026
Light
full sun
Water
low
Size
12"–24" H × 8"–16" W
Bloom
Jun, Jul, Aug
Native to
CO, ID, MT, UT and 2 more states
Pollinators
bees, butterflies
Browse plants for this ecoregion
Western sweetvetch is a compact native perennial that produces clusters of pink to purple pea-like flowers from June through August. This drought-tolerant plant forms neat clumps and requires minimal care once established in sunny locations.
In an HOA neighborhood
Western Sweetvetch is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.
Works well in: mid zone, foundation.
- May look sparse or weedy if not grouped with other plants
- Unknown winter appearance could be problematic
Wildlife value
The flowers attract bees and butterflies throughout the summer blooming period. As a member of the legume family, it also helps improve soil nitrogen levels.
Common questions
- How much sun does Western Sweetvetch need?
- Western Sweetvetch grows best in full sun conditions.
- When does Western Sweetvetch bloom?
- Western Sweetvetch blooms in June, July, and August.
- Where is Western Sweetvetch native?
- Western Sweetvetch (Hedysarum occidentale) is native to CO, ID, MT, UT and 2 more states, per the USDA PLANTS Database and regional native plant society lists.
- What pollinators does Western Sweetvetch attract?
- Western Sweetvetch draws bees and butterflies.
- Is Western Sweetvetch HOA-friendly?
- Western Sweetvetch is generally an HOA-friendly choice in the right placement, with low maintenance.
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.
Ready to grow Western Sweetvetch? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz