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Lupinus luteolus Kellogg
Butter Lupine, Pale yellow lupine
USDA Symbol: LULU2
USDA Native Status: Native to U.S.
Crowded whorls of yellow pea flowers in long racemes on branched stems.
As a lupine pod matures and dries, its walls become elastic and finally burst open, instantly curling and throwing the seeds some distance. On warm afternoons these opening pods can be heard softly popping, and a person standing in a patch of mature lupines may be hit by flying seeds.
Plant CharacteristicsDuration: Annual Habit: Herb Leaf:
Bloom InformationBloom Color: Yellow
Bloom Time: May , Jun , Jul , Aug
CA , OR Native Distribution:
Southern Oregon south to southern California. Native Habitat:
Dry slopes and flats in open forests and on grassy slopes. USDA Native Status: L48(N)
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade
CaCO3 Tolerance: Medium
Plants in the genus
Lupinus, especially the seeds, can be toxic to humans and animals if ingested. Sensitivity to a toxin varies with a personís age, weight, physical condition, and individual susceptibility. Children are most vulnerable because of their Conspicuous Flowers:
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Record Modified: 2007-01-01
Research By: TWC Staff