Thermopsis lanceolata is a hardy perennial valued for its tall, upright stems and bright yellow pea-like blooms. These seeds are ideal for gardeners looking to grow long-lasting, resilient plants that add structure and vibrant color to garden beds, borders, and naturalized landscapes.

This species is known for its strong adaptability, drought tolerance, and vigorous growth, making it suitable for a wide range of garden conditions. Its attractive foliage and clustered blooms create a dramatic display from late spring through early summer.

Perfect for low-maintenance gardens, prairie-style plantings, and pollinator-friendly landscapes, Thermopsis lanceolata is a reliable and beautiful addition to any outdoor space.

Features:

Variety: Lanceolata
Plant Type: Perennial ornamental plant
Growth Habit: Upright, bushy, clump-forming
Bloom Appearance: Tall spikes of bright yellow pea-like flowers
Light Requirement: Full sun to light shade
Suitable For: Borders, wildflower gardens, cottage gardens, landscaping

Specifications:

Seed Type: Non-GMO
Planting Season: Early spring or autumn
USDA Zones: 4–8
Planting Depth: 0.25 inches (6 mm)
Spacing: 12–18 inches (30–45 cm)
Germination Time: 14–30 days
Days to Bloom: Late spring to early summer
Mature Plant Height: 24–36 inches (60–90 cm)
Mature Plant Spread: 12–24 inches (30–60 cm)
Temperature Requirement: Prefers cool to warm climates
Soil Type: Well-drained, sandy or loamy soil
Water Requirement: Low to moderate; drought tolerant once established
Container Suitability: Suitable for large outdoor containers
Indoor/Outdoor Use: Best grown outdoors; can be started indoors

Planting Guide:

Scarify seeds lightly or soak in warm water for 12–24 hours before planting.
Sow seeds in well-drained soil in early spring or autumn.
Cover lightly and keep the soil evenly moist until germination.
Provide full sun for best flowering performance.
Transplant seedlings once strong and frost danger has passed.
Water moderately and avoid overwatering.