Lupines can be propagated by seed or by taking cuttings from the base of the plant.
Propagating by seed
Scarify seeds: Make the seeds ready to sprout by scarifying them.
Plant seeds: Sow the seeds in well-draining soil. You can scatter them on the ground in late fall or early winter, or sow them in soil blocks.
Provide insulation: Cover the seeds with snow to insulate them from the cold.
Check for germination: Check the seeds daily after a few days to see if they have germinated.
Transplant: Transplant the seedlings with care, once they have a couple of true leaves.
Propagating by cuttings
Take cuttings: In spring, take cuttings from the shoots at the base of the plant.
Plant cuttings: Plant the cuttings in well-draining soil.
Tips
Lupines are deep-rooted and don’t spread much, except through re-seeding.
Lupins grown from seed may flower in a mix of colors, as they don’t come true to type. To encourage self-sowing, avoid deadheading and pruning. Deadheading can encourage side shoots to grow and produce more flowers.