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key growing information
How to Grow Lupine From Seed
How to grow lupine from seed: soaking or scarifying, deep cells for taproots, direct sowing, cutting stage, soil pH and toxicity warning.
By Hensley’s Seed Co.
Lupine - Key Growing Information
DAYS TO GERMINATION:
Allow 14–21 days at 65–75°F (18–24°C). Soaking the seed overnight or nicking the seed coat helps it sprout.
SOWING:
For transplants, start 4–8 weeks before planting out; seedlings tolerate a light frost. Deep cells such as 50-cell deep or 32-cell trays give the taproot room to develop. Shallower 50- or 72-cell trays also work as long as you transplant on time, because cramped roots lead to weaker plants and poorer flowers. Thin to one seedling per cell when the first true leaves show, then harden off and plant out. To sow in place, cover seed with ¼" of soil or mix, since darkness helps germination.
LIGHT PREFERENCE:
Full sun to partial shade.
PLANT HEIGHT:
Grows about 24–40" tall.
PLANT SPACING:
Space plants 18–24" apart.
HARDINESS ZONES:
Hardy in Zones 4–8.
HARVEST:
Cut when about 80% of the flowers on the spike have opened.
SOIL REQUIREMENTS:
Moist but well-drained. Tolerates pH 5.5–7, though slightly acidic soil is best.
USES:
Cut flowers, borders, mass plantings, cottage gardens and wildflower meadows.CAUTION: Every part of the plant, seeds included, is poisonous. Take great care around children and pets.
SCIENTIFIC NAME:
Lupinus spp.
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