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Plant · P-096
Narrowleaf Lupine
Lupinus angustifolius
Narrowleaf Lupine is a nitrogen-fixing annual grain legume whose seed rivals soybean for protein, cooked as a vegetable or fed to livestock at rates comparable to soybean meal. It needs a dedicated inoculant on ground that has never grown it before, and does best on mildly acid, well-drained sandy or loamy soil kept consistently moist - it has little tolerance for alkaline, calcareous or dry ground. Modern sweet cultivars carry almost none of the bitter alkaloids older types need soaked out, and the plant also frees up soil phosphorus for whatever grows near it.
Record at a glance
Growing profile
- Sun
- Full Sun
- USDA zone
- USDA 7–9
- Soil
- Sand · Loam
- Moisture
- Moderate
Vertical layer
Herbaceous- Soil pH
- 4.5–7
- Plant type
- Annual
- Mature height
- 3.2 ft
- Mature spread
- 12 in
- Plant spacing
- 6 in
- Root type
- Tap
- Spread pattern
- Seed
Keep exploring
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Alsike Clover
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Amaranth Greens
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Anise Hyssop
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Apple Mint
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