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Coulter's Lupine

Lupinus sparsiflorus

Last reviewed: August 2026

Coulter's Lupine (Lupinus sparsiflorus)
Photo: Miwasatoshi / Wikimedia Commons (CC BY-SA 4.0)

Toxicity unknown

Coulter's Lupine (Lupinus sparsiflorus) 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

6"–24" H × 6"–18" W

Bloom

Mar, Apr, May, Jun

Native to

AZ, CA, NV, UT

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.

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Coulter's lupine is a compact annual wildflower that produces spikes of blue to purple pea-like flowers from March through June. This wildflower grows 6-24 inches tall with palmate leaves and thrives in full sun with minimal water once established.

In an HOA neighborhood

Coulter's Lupine 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.

  • Annual lifecycle creates gaps in plantings
  • Can appear weedy or unkempt between seasons
  • Wildflower appearance may seem too informal for front yards

Wildlife value

The flowers attract native bees and butterflies during the spring blooming period. As a member of the legume family, it also helps fix nitrogen in the soil.

Common questions

How much sun does Coulter's Lupine need?
Coulter's Lupine grows best in full sun conditions.
When does Coulter's Lupine bloom?
Coulter's Lupine blooms in March, April, May, and June.
Where is Coulter's Lupine native?
Coulter's Lupine (Lupinus sparsiflorus) is native to AZ, CA, NV, UT, per the World Checklist of Vascular Plants (Kew).
What pollinators does Coulter's Lupine attract?
Coulter's Lupine draws bees and butterflies.
Is Coulter's Lupine HOA-friendly?
Coulter's Lupine takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Coulter's Lupine? 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