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Large-leaved Lupine

Lupinus polyphyllus

Large-leaved Lupine, also known as Bigleaf Lupine, is a robust perennial that is celebrated for its ornamental qualities and ecological benefits. This striking plant can grow up to 5 feet tall, featuring large, palmate leaves with 9 to 17 leaflets that are deep green in color. From late spring to early summer, it produces dense, erect spikes of pea-like flowers that range in color from deep blue to purple, with some varieties displaying pink hues. These vibrant blooms not only add a vertical dimension to garden beds and borders but also serve as a vital nectar source for bees, butterflies, and hummingbirds.

Bigleaf lupine is commonly used in wildflower meadows, native plant gardens, and as a backdrop in perennial borders. It thrives in full sun to partial shade and prefers moist, well-drained soils, although it can adapt to a variety of soil conditions. This lupine is particularly effective in improving soil fertility by fixing nitrogen, making it a valuable addition to ecological gardens.

Details

Height12” - 60”
Spread30"
Bloom SeasonMay – July
Soil Types
loamLoam
sandSand
gravelGravel
Soil Moisture
dryDry
mediumMedium
moistMoist
Sun Exposure
partSunPart Sun
fullSunFull Sun

Range Map

Available
Not available

Ecological Benefits

Maintenance Tips

  • Water regularly to maintain moist but well-drained soil conditions, especially during dry periods.
  • Deadhead spent flower spikes to promote a second bloom and prevent excessive self-seeding.
  • Prefers rich, slightly acidic soils but is quite adaptable. Enhance poor soils with organic matter to encourage vigorous growth.
  • Apply a layer of organic mulch to conserve soil moisture, suppress weeds, and provide a nutrient boost.
  • Monitor for pests and diseases, such as slugs and powdery mildew. Ensure good air circulation and avoid overhead watering to minimize disease risk.

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