Days to Germination:20-25 days
Lupinus polyphyllus. Lupines should be direct sown outside after the threat of frost has passed. Prepare a bed in full to partial sunlight with rich, well-draining soil and protection from wind. Soak the seed for 24 hours in tepid water prior to sowing. It may also be started indoors 6 to 8 weeks before transplanting out after the threat of spring frost has passed. Use peat pots or seed starting cells to avoid root disturbance. Provide even moisture and strong light. Harden off the seedlings by gradually acclimating them outside over 1 to 2 weeks. When the seedlings are 2" tall, thin or transplant to 12" to 15" apart. Seedlings may vary in growth or vigor depending on color. Water regularly and mulch to keep roots cool and retain moisture. Lupines will bloom the second season. Spring to early summer flowering. Height: 36" to 48".