Lupines, with their colorful spikes, are some of the most popular garden perennials of them! ... Growing 1 to 4 feet tall, the leaves of lupine are grey-green with silvery hairs and the flowers resemble pea flowers. The seed pod looks like a hairy pea pod and contains up to 12 seeds.

Do lupine plants spread?

Lupines are deep rooted and do not spread except through re-seeding. Seeds will not come true to the original variety planted, but will eventually revert to blue-violet and white.

How poisonous is lupine?

Toxicity. Several varieties of lupines are toxic to animals and cause discomfort to humans when ingested. ... leucophyllus), which is native to western North America, including California, is toxic when it's young. Not all animals react to the poison, but it can lead to death.