Thermopsis montana
Golden Banner or Golden Pea
A Colorado Native Montane to Subalpine Species
Fabaceae or Pea Family
18 to 24 inches tall - yellow
Full sun to part shade
Ordinary garden soil
Mid-Spring
Propagate by seed or division
Photos by Jane Hendrix

Golden Banner spreads rapidly by (underground) rhizomes so if you choose to put it into a formal garden, you'll have to keep an eye on it so it doesn't overrun less aggressive species.