Lupine Plant Care

Lupine (Lupinus polyphyllus) belongs to the Fabaceae family within the Lupinus genus. Lupine is native to western North America from southern Alaska and British Columbia and western Wyoming, and south to Utah and California. Lupine is also known as Garden Lupine, Russell Lupine, Large-leaved Lupine.

Lupine displays an upright, bushy perennial growth habit, reaching up to 3 inches tall with a spread of approximately 2 inches. Lupine produces showy spikes of pea-like flowers in various colors.

Leaf size: approximately 4 inches.

Lupinus polyphyllus requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.

Lupine thrives in full sun to partial shade light conditions. The optimal light range is 2000–5000 lux. Avoid placing Lupine in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Lupinus polyphyllus grows best at temperatures between 50°F and 80°F. Lupine prefers humidity levels of 40–60%.

Well-draining sandy loam with added organic matter. Good drainage is essential for Lupine to prevent waterlogging, which leads to root rot and fungal issues.

Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.

Lupine can be propagated through seeds.

Lupine is susceptible to aphids, leafhoppers, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Lupine grows outdoors in USDA Zone 4a – 8b. Native to western North America from southern Alaska and British Columbia and western Wyoming, and south to Utah and California, Lupine is adapted to warm climates. In cooler regions, grow Lupine as a houseplant or bring it indoors before the first frost.