Plant Lupinus polyphyllus 'Westcountry™ Desert Sun' where you want dramatic, vertical flower spires and classic lupine foliage in late spring into summer. You will get sturdy, upright spikes of pea-like blooms held above a clump of palmate green leaves, creating a strong “thriller” look in beds and mixed plantings.

Give it full sun to part shade and prioritize drainage. A loose, well-drained soil helps the crown stay healthy; avoid sites that stay soggy, especially through winter. Plant so the crown sits at the soil line, then water to settle roots. Once established, keep moisture even through active growth and bloom, letting the top inch of soil dry slightly between deep waterings.

Expect a mature size around 24-36 inches tall with a spread of about 12-24 inches. In windy sites, surrounding plants often provide enough support, but you can add discreet staking early if your garden is exposed. Deadhead spent flower spikes to keep the plant tidy and encourage additional flowering when conditions are favorable.

This lupine is best in cooler-summer regions and performs most reliably where nights cool down. In hotter, humid summers, provide afternoon shade and consistent moisture without waterlogging. It is hardy in USDA Zones 4-8 and typically returns each year when sited well and not crowded.

Specifications

• Cold hardiness zone: 4-8 (-30 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Mature height: 24-36"
• Spread: 12-24"

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