Lupinus arboreus seeds grow into the tree lupin a fast-growing, semi-evergreen shrub native to the temperate biome of coastal California and north-western Mexico, growing on coastal dunes, sand hills and disturbed coastal scrub. Described by Sims. The epithet arboreus means ‘tree-like’, referring to the woody, shrubby habit. Produces large, bushy shrubs to 1.52.5 m covered in long racemes of fragrant, pale yellow (occasionally blue or lilac) flowers in spring and summer. Extremely fast-growing can flower in the first year from seed. Widely naturalised in the British Isles, New Zealand and parts of Europe where it is considered invasive. Food for caterpillars of many butterfly species. Family Fabaceae.
Full sun; well-drained, poor soils; cool to warm temperate coastal conditions; drought-tolerant. Fast-growing flowers first year from seed. Check local invasive status.
Lupinus arboreus is the tree lupin one of the fastest-growing ornamental shrubs from seed, flowering in its first year from seed and producing spectacular masses of fragrant yellow flowers, widely naturalised across the British Isles and New Zealand where its nitrogen-fixing roots and prolific seeding have made it an invasive coloniser of coastal dunes.
IMPORTANT: Pictures show the adult plant, which is not for sale. The offer is only for seeds.
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