Fabaceae
Lupinus arboreus var. eximius
Lupinus arboreus var. eximius var. eximius
Also known as Lupinus eximius
Flowering Plants · Native Plants · Tree Lupine · Shrub Lupine · California Native · Coastal · Fabaceae · Pollinator · Wildflower · Nitrogen-Fixing · Perennial · Part Shade
The tree lupine variety eximius is a shrubby perennial native to coastal California, producing large, showy flower spikes in yellow to purple hues. It prefers well-drained, sandy or loamy soils and is well suited to coastal gardens with moderate humidity and mild temperatures. Prune lightly after flowering to maintain shape and encourage fresh growth in subsequent seasons.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water deeply but infrequently, allowing the top 1-2 inches of soil to dry between waterings · Every 7-10 days during growing season
- Maintenance
- Moderate
- Soil
- sandy loam
- Soil pH
- 6–7.5
- Temperature
- -40°F to 85°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 2.5 ft
- Spread
- 12 in
- Spacing
- 36 in apart
- Growth rate
- Moderate
- Root depth
- Deep
- Flowers
- Yellow
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- California
- Attracts
- Bees, Butterflies, Hummingbirds
Sources: trefle, usda
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