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Yellow Bush Lupine

Lupinus arboreus

Also listed as Lupinus eximius, Lupinus fruticosus

Also known as Tree Lupine, Tree Lupin, Coastal Bush Lupine

shrub☀️ full sun💧 low water❄ Hardy: Zone 9a – Zone 11b

Climate Match for your location

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A vigorous evergreen shrub bearing fragrant spikes of bright yellow flowers. Thrives in poor, dry soils and coastal conditions.

Why grow it

Yellow bush lupine establishes quickly in marginal sites where many ornamental shrubs struggle, particularly in sandy or gravelly soils with minimal amendment. Unlike herbaceous lupine species, its woody structure provides year-round presence and persistent branching for layered garden design. Its salt and wind tolerance makes it more reliable than most lupines in coastal gardens, though it flowers less prolifically than some herbaceous cousins in rich garden soil.

Watch out for

In mild climates with consistent moisture, this plant can become leggy and lose vigor after the first flush of flowers; periodic hard pruning after bloom helps maintain compact form. Self-seeding can be prolific in suitable conditions, so deadheading spent flowers is worth considering if volunteer seedlings become unwanted in the landscape.

Overview

Form
upright, bushy
Growth Rate
fast
Size
4–6′ tall × 4–8′ wide
Dormancy
evergreen
Family
Fabaceae
Biomass and mulchDynamic accumulatorErosion controlPollinators & beneficial insectsNitrogen fixer
Nitrogen fixer · Moderate

Native to the United States

Native Range

California

Native to: California

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SpringSummer

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Companion Planting

Plants well with