About This Cold stratify: mix butterfly milkweed seeds with moist sand, refrigerate 30 days, then sow native milkweed seeds for planting just below surface. Native wildflower seeds germinate in 10-21 days. Monarch host plant: milkweed seeds for monarch butterflies thrive as perennial flower seeds in USDA zones 3-11; full sun to part sun, perfect for butterfly gardens, open fields & roadsides. Blazing orange blooms: butterfly milkweed flower seeds grow to 24 inches tall and bloom from early to late summer; attracts honeybees, butterflies and hummingbirds - bright flower garden seeds to plant outside. Drought tolerant once established: native milkweed seeds, pollinator seeds, love sandy, well-drained soil; water young plants, avoid soggy beds. Space 12-24 inches; slow to bloom in 2-3 years. Cut-flower favorite: long vase life without milky sap. After bloom, 3-4 inch pods form; harvest of flowers seeds before split. It may self-sow if pods are left to open. The flowers of these perennial plants attract honeybees, butterflies, and hummingbirds. Overview Brand : KVITER Color : Orange Expected Blooming Period : Summer Sunlight Exposure : Full Sun Unit Count : 75.0 Count Expected Planting Period : Spring to Summer USDA Hardiness Zone : 3-11 Expected Plant Height : 24 Inches Soil Type : Sandy Soil Moisture Needs : Moderate Watering