Smallflower Lupine
Lupinus polycarpus
Last reviewed: September 2026

Toxicity unknown
Smallflower Lupine (Lupinus polycarpus) 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"–12" W
Bloom
May, Jun, Jul
Native to
AZ, CA, OR, WA
Pollinators
bees
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 452 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
Smallflower lupine is a compact annual wildflower that produces spikes of small blue to purple flowers from late spring through summer. This low-growing native reaches up to 2 feet tall and thrives in sunny, dry conditions with minimal water once established.
In an HOA neighborhood
Smallflower 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.
- Dies back completely as annual, leaving gaps
- Can appear weedy or informal to traditional landscaping standards
- May self-seed unpredictably
Wildlife value
The flowers provide nectar for native bees and other pollinators during the growing season. As a member of the legume family, it also helps fix nitrogen in the soil.
Common questions
- How much sun does Smallflower Lupine need?
- Smallflower Lupine grows best in full sun conditions.
- When does Smallflower Lupine bloom?
- Smallflower Lupine blooms in May, June, and July.
- Where is Smallflower Lupine native?
- Smallflower Lupine (Lupinus polycarpus) is native to AZ, CA, OR, WA, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Smallflower Lupine attract?
- Smallflower Lupine draws bees.
- Is Smallflower Lupine HOA-friendly?
- Smallflower 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.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Smallflower Lupine? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz