Arroyo Lupine SEEDS - PERENNIAL FLOWERS

Lupinus succulentus — Arroyo Lupine, also known as Hollowleaf Annual Lupine or Succulent Lupine — is a California native wildflower that brings a burst of vivid purple to spring gardens and meadow plantings. Bushy, branching plants grow 12–24 inches tall with attractive star-shaped leaflet clusters and dense spikes of bright purple flowers. Like all lupines, Arroyo Lupine is a nitrogen-fixer — the name “lupine” comes from the Latin lupus (wolf), reflecting an old folk belief that it stripped nutrients from soil; in reality, it does the opposite. An excellent choice for naturalizing, erosion control, and pollinator support in western gardens.

Plant Highlights

• Vivid purple flower spikes; spring blooming
• Bushy, branching habit with ornamental star-shaped leaflet clusters
• Native to California and the American Southwest
• Nitrogen-fixing — improves soil as it grows
• Excellent for erosion control, wildflower meadows, and pollinator plantings
• Deer resistant; attracts bees and butterflies
• Good as a cut flower

Growing Guide

Seed prep: Scarify seeds lightly with sandpaper or soak in 180°F water overnight to soften the hard seed coat and accelerate germination.

Direct sowing (recommended): Sow 1–2 weeks after the last average frost, ½ inch deep in prepared soil. Keep lightly moist until germination.

Starting indoors: Sow 4–6 weeks before last frost. Use individual pulp pots — lupines do not tolerate root disturbance and pulp pots allow transplanting directly into the ground.

Spacing & thinning: Sow 3–4 seeds together, 12–15 inches apart; thin to the strongest plant at 2 inches tall.

Watering: Keep lightly moist until established. First season: 1 inch per week to build deep roots. Established plants are drought-adapted and need irrigation only during prolonged dry periods.

Cut flowers: Cut stems when lower flowers have just opened. Strip foliage below the waterline and place immediately in water.

Planting Specs

• Type: Annual (native wildflower)
• Origin: California native — widespread in the American Southwest
• USDA Zones: 3a–10b
• Height: 12–24 inches | Spacing: 12–15 inches
• Bloom season: Spring through summer
• Bloom color: Bright purple
• Light: Full sun
• Soil: Well-drained, dry to average, pH 5.6–7.5
• Deer resistant: Yes
• Germ temp: 68°F | Avg. germ time: 7–14 days