Washington lupin

Lupinus polyphyllus

Family: Fabaceae Genus: Lupinus Species: polyphyllus
Washington lupin
Washington lupin

Botanical Description

Lupinus polyphyllus, the bigleaf or garden lupine, is a stout perennial herb of the family Fabaceae growing 0.5 to 1.5 m tall from a thick rootstock. The leaves are palmately compound with nine to seventeen radiating, lance-shaped leaflets on long stalks, giving a handsome fan-like appearance. The flowers are pea-like and densely arranged in tall, showy terminal racemes up to 60 cm long, typically blue to violet but ranging to pink and white in cultivated forms; they are followed by hairy pods that split to eject the seeds. It flowers in early to mid summer. Native to western North America, it is widely grown as a garden ornamental and has naturalised across Europe and elsewhere. The plant contains toxic quinolizidine alkaloids and is poisonous to livestock and humans.

Native Region: Alberta, British Columbia, California, Connecticut, Idaho, Maine, Masachusettes, Minnesota, Montana, Nevada, New York, Ontario, Oregon, Québec, Vermont, Washington, Wisconsin

This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.

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