Arroyo Lupine. Lupinus succulentus, Legume Family: ( Fabaceae ), Arroyo Lupine. Also called: Succulent Lupine, Foothill Lupine, Bajada Lupine, Hollowleaf Annual Lupine, and Hollowleaf Lupine. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Quick Notes: Height: 6 to 36 inches tall. Flowers: Blue - Purple pea-like flowers about 1/4 inch long in very elongated clusters. The banner petal has a white center. The white part turns purple when the flower has been pollinated. Flowering Time: February - May. Leaves: Green, not hairy, and palmately compound. Found: Native to California, and adjacent sections of Arizona, and Baja California. Hardiness: USDA Zone 8b: to -9.4 �C (15 �F) USDA Zone 9a: to -6.6 �C (20 �F) USDA Zone 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �F) USDA Zone 10b: to 1.7 �C (35 �F) USDA Zone 11: above 4.5 �C (40 �F) Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) Sun Exposure: Full Sun Elevation: 0 - 2,500 Feet. Habitat: Disturbed soil, roadways, sandy or gravelly areas. Prefers moist clay or heavy soils in full sun. Miscellaneous: Flowering Photos Taken March 16, 2005. Castle Creek, Arizona.

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