Potted lupine plants are typically perennial cultivars that you can put in the ground immediately in the spring. Seedlings will emerge 15 to 25 days after planting. (See Growing Perennials from Seed.) Sow seeds at a shallow depth of about ¼ inch under loose topsoil, and keep them evenly moist until they germinate. You can do this by soaking the seeds in warm water for a few hours or by scarifying them with sandpaper or a small file to help them absorb water. Lupine seeds have very tough outer shells that need to be softened up before sowing. Plant container-grown plants in the spring after the danger of frost has passed. You can also sow seeds in the spring 4 to 6 weeks before your average last frost date, but your plants will bloom later in the summer. If planting lupine from seed, direct sow in the garden in late fall or early winter for blooms the following spring. If your soil is too alkaline, you can lower the pH by adding a soil acidifier (sulfur). Lupines also like slightly acidic conditions. In denser clay soils, loosen the soil before planting by working in compost. Lupines love loose, sandy soil because it doesn’t impede the growth of their deep tap roots. Be careful when buying nursery-grown plants, as lupines have fast-growing taproots that can become constrained if the plants are kept in their containers too long.
Lupines can be started from seed, dormant bare-root plants, or potted plants, but seeds are easier to find and offer the broadest selection of cultivars. Mini Gallery™ Blue Bicolor Lupine ( Lupinus polyphyllus). Often wither or are short-lived in areas with hot, humid summers.
PURPLE CONEFLOWER SEEDLINGS PLANTING IN FALL IN ZONE 6 FULL
Plant lupine in full sun in areas with cool summers, but give them filtered sunlight or afternoon shade in warmer or Southern climates. Typically 4-8 best treated as annuals in Zone 7 and above Exposure: On this page: Basics | Types | Planting | Care | Pictures | Design Ideas “Not only do lupines thrive, but they self-sow with a vengeance.” There are also many varieties that can be grown as annuals outside of their comfort zone. “Just being able to grow lupines would be reason enough to move to a cool-summer climate,” says Larry Hodgson, author of Perennials for Every Purpose. In addition to their irresistible beauty, lupines are also valued for their ability to flourish in challenging environments, including sandy nutrient-poor soils, high elevations, and areas with cool summers. The tall, lush spires of vividly colored flowers are like floral traffic cones, compelling you to slow down and take notice. If you’re looking for a showy summer-flowering perennial that will stand out from the crowd, lupine is a sure front-runner.
West Country™ 'Masterpiece' ( Lupinus polyphyllus).
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