Sky Lupine (Lupinus nanus) is an annual forb native to Western US states (such as California) that can thrive in USDA Zones 7–10 as a cool-season annual. Reaching a mature height of 6–18 inches with a bushy, branching growth habit, it features palmately compound green leaves and produces showy terminal spikes of bright sky-blue to deep violet pea-like flowers with white or yellow center banners. It thrives in dry, sandy or clay soils, foothill grasslands, and open fields in full sun and is ideal for highway wildflower plantings, native annual meadow restoration, and soil nitrogen fixation.
This is an annual wildflower that grows between 1 to 2 feet tall. It is often used in wildflower mixes and for habitat restoration. This plant prefers full sun and grows in well-drained soils, often found in grasslands and coastal scrub habitats.
Species Attributes
Seeds Per lb
Growing Region
Pacific Northwest, California, Southeast
Native
California
Life Form
Forb, Legume
Life Cycle
Annual
Light Requirements
Sun, Part Shade
Precipitation Requirements
Low
Mature Height
1-2 ft
Flowering Season
Spring
Cool/Warm Season
Bloat/Non-Bloat
Bloom Color
Blue, Purple, White
Bunch/Sod
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