Narrowleaf lupine is an annual legume grown for its seeds, as livestock fodder and as a green manure that enriches poor soil. It is grown as a crop rather than mainly as an ornamental, and it thrives in cool, sunny conditions.
Family
Fabaceae (Pea & bean family)
Grows as
Annual
Light
Full sun
Water
Water regularly while establishing, then less once established; avoid waterlogged soil.
Soil
Well-drained, light to medium soil; tolerates poor, acidic soil.
Temperature
Cool to mild conditions, about 10–22 °C; sensitive to prolonged heat and frost.
How easy
Easy
Safety
Toxic: Raw seeds and other parts contain bitter quinolizidine alkaloids, which are harmful unless the seeds are processed to remove them.
Edible
Yes, some parts
Native range
Medit.
Climate
subtropical
About
Lupinus angustifolius is a species of lupin known by many common names, including narrowleaf lupin, narrow-leaved lupin and blue lupin. It is native to Eurasia and northern Africa and naturalized in parts of Australia and North America. It has been cultivated for over 6000 years as a food crop for its edible legume seeds, as a fodder for livestock and for green manure.
Uses
The plant is used as a green manure or as a grain legume for animal feed or human consumption. Through its ability to fix nitrogen and its low nutrient requirement this plant is suitable to be planted on exhausted fields as a soil improver. Additionally, lupins have strong roots, that can reduce the compaction of a soil.
Text excerpted from the Wikipedia article Lupinus angustifolius by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.