Mountain Goldenbanner
Thermopsis montana
Last reviewed: August 2026
Toxicity unknown
Mountain Goldenbanner (Thermopsis montana) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
12"–24" H × 12"–18" W
Bloom
May, Jun, Jul
Native to
AZ, CO, ID, MT and 6 more states
Pollinators
bees, butterflies
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 445 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Mountain goldenbanner is a native perennial that produces bright yellow flower spikes in late spring and early summer. This compact legume grows in neat clumps with attractive compound leaves and requires minimal water once established.
In an HOA neighborhood
Mountain Goldenbanner is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
- Foliage dies back completely in winter
Wildlife value
The bright yellow flowers attract native bees and butterflies during the blooming season. As a legume, it also fixes nitrogen in the soil, benefiting surrounding plants.
Common questions
- How much sun does Mountain Goldenbanner need?
- Mountain Goldenbanner grows best in full sun conditions.
- When does Mountain Goldenbanner bloom?
- Mountain Goldenbanner blooms in May, June, and July.
- Where is Mountain Goldenbanner native?
- Mountain Goldenbanner (Thermopsis montana) is native to AZ, CO, ID, MT and 6 more states, per vouchered herbarium specimen records and regional native plant society lists.
- What pollinators does Mountain Goldenbanner attract?
- Mountain Goldenbanner draws bees and butterflies.
- Is Mountain Goldenbanner HOA-friendly?
- Mountain Goldenbanner is generally an HOA-friendly choice in the right placement, with low maintenance.
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.
Ready to grow Mountain Goldenbanner? 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