Bloomipedia
Lupine (large-leaved lupine) (Lupinus polyphyllus)
Photo: Cam Fox via iNaturalist · CC BY 4.0 · resized

Flower profile

Lupine (large-leaved lupine)

Lupinus polyphyllus

Native in the lower 48

Lupine (large-leaved lupine) is a wildflower that USDA PLANTS lists as native in the lower 48 states. It's on our flower lists for 2 states, and across the U.S. it's most often seen in bloom in May–July.

17states
2of our state lists
6,987U.S. sightings*

*iNaturalist research-grade observations, as of October 17, 2026.

On our lists for: Maine, New Hampshire

Quick look

Lupinus polyphyllus, the large-leaved lupine, big-leaved lupine, many-leaved lupine, blue-pod lupine, or, primarily in cultivation, garden lupin, is a species of lupine (lupin) native to western North America from southern Alaska and British Columbia and western Wyoming, and south to Utah and California. It commonly grows along streams and creeks, preferring moist habitats.

  • It belongs to the Fabaceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as native in the lower 48 states and records it in 17 states. USDA PLANTS
  • NatureServe lists it as native to New Hampshire. NatureServe
  • NatureServe lists it as not native to Maine. NatureServe
  • In Maine, most iNaturalist sightings of it in flower come in May–July. iNaturalist
  • In New Hampshire, most iNaturalist sightings of it in flower come in May–July. iNaturalist
  • iNaturalist has 1,445 research-grade sightings of it in Maine, ranking #41 among the 110 flowers on our Maine list. iNaturalist
  • iNaturalist has 502 research-grade sightings of it in New Hampshire, ranking #72 among the 109 flowers on our New Hampshire list. iNaturalist

Lupine gift ideas

Handmade lupine gifts from independent makers.

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (761 records)
Bloom time in each of our 2 states
StateTypePeak bloomSightings*
MaineIntroducedMay–July1,445
New HampshireNativeMay–July502

Conservation status

Federal (U.S. ESA)
Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
NatureServe global
G5 Secure worldwide. NatureServe
Maine
Not listed Not on Maine Rare Plant List (Maine Natural Areas Program, 2021). E and T are Maine's official endangered and threatened plants (12 M.R.S.); SC and PE are tracking categories. NatureServe: SNA, not applicable (usually because it isn't native there) in Maine. Maine rare plant list
New Hampshire
Not listed Not on New Hampshire Official Rare Plants List (Ncr 312, eff. Jan 1, 2020). NatureServe: SNR, not yet ranked in New Hampshire. NH Ncr 312
Rare elsewhere
No other U.S. state ranks it S1, S2, SH or SX.

Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.

Can you eat it?

For peopleNot well documented

None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.

For petsNot well documented

It isn't on the ASPCA plant list.

🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.

Where does it grow?

USDA PLANTS records lupine (large-leaved lupine) in 17 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Alaska, California, Connecticut, Idaho, Maine, Maryland, Massachusetts, Michigan, Minnesota, Montana, Nevada, New Hampshire, New York, Oregon, Vermont, Washington, Wisconsin.

Maine counties with USDA records: Hancock, Knox, Penobscot, Waldo, York.

New Hampshire counties with USDA records: Cheshire, Coos.

More Maine flowers

Sources