Tropical Milkweed, Bloodflower Asclepias curassavica Asclepias curassavica seeds do not need to be cold stratified (since it is a tropical plant). You can start these indoors about 4-8 weeks before the last frost. Plant the seeds about 1/4 inch deep and keep moist. They will germinate in about 2-3 weeks. SEED TYPE: Heirloom Seed ALSO KNOWN AS: Tropical Milkweed, Cotton Bush, Mexican Butterfly Weed, Scarlet Milkweed Grow Heirloom Bloodflowers / Sunset Flowers - Plant Bloodflower / Sunset Flower Seeds Bloodflower (Asclepias curassavica) is a perennial in zones 9-10 and warm season annual in other zones. It is a member of the milkweed family, which includes butterfly weed (A. tuberosa), prairie milkweed (A. sullivantii), and swamp milkweed (A. incarnata), midwestern native perennials in the Garden's permanent collection. The sepals of 'Red Butterfly' are scarlet and the crowns are yellow. Milkweed flowers form seedpods from which seeds with silky hairs are dispersed by wind. Bloodflower is a host plant for monarch and queen butterfly larvae and its nectar attracts many other species of butterflies to the Garden. A unique and stunning Asclepias variety - Bloodflower or Sunset Flower - is a highly cherished plant with stunning flowers that mimic the colors of sunset. The Bloodflower is lesser known perhaps, but more colorful than its cousin, Asclepias tuberosa, Butterfly Milkweed. Covering itself with gorgeous flowers of orange, yellow and red in midsummer, Bloodflower/Sunset Flower is a real dazzler in any wild garden. Buy Seeds Online ,Organic Seeds ,Heirloom Seeds ,Non-GMO Seeds ,Vegetable Seeds ,Flower Seeds ,Herb Seeds ,Fruit Seeds ,Garden Seeds ,Seed Starter Kits ,Rare Seeds ,Bulk Seeds ,Indoor Gardening Seeds ,Seed Catalog ,Seed Packs for Sale ,Sustainable Seeds ,Greenhouse Seeds ,Seed Suppliers ,Planting Seeds ,Home Garden Seeds