
Lupinus truncatus - Collared Annual Lupine (Seed)
Collared annual lupine is small and delicate with unusually narrow, blunt leaves. Flowers are dark magenta to purple-blue. Transplants require supplemental water. Caution: all parts are toxic. Plant Characteristics Species Name Lupinus truncatus Common Name Collared Annual Lupine Plant Type Annuals Height by Width 1.5ft. x 1ft. Flower Color Purple, Violet, Lavender, Pink, Magenta, Rose Flowering Months March, April, May Sun Exposure Inland-Sun Water Requirement Low Soil Type Sand, fast draining Sowing Season Fall/Winter Sowing Difficulty Level* Easy Sowing Pretreatment Hot water soak * Sowing difficulty levels: Easy: Sow in-ground or in pots with simple or no pretreatment Moderate: Sow in-ground or in pots with pretreatment; may produce staggered germination Difficult: Sow in pots with pretreatment and stratification; may produce staggered germination