- You will get 400+ Seeds of Milkweed Sampler Pack (50-Common 50-Swamp 50-Showy 100-Orange 200-Bloodflower) Flower Seeds. - Seller Notes: “Asclepias syriaca-incarnate-speciosa-tuberosa- curassavica. U.S. Grown Seed. Packed for 2023 Growing Season.”. - Planting Time: Perennial. - Soil Type: Poor soils, Clay, Loam, Peat, Sand. - Life Cycle: Perennial. - USDA Hardiness Zone (°F): 8 (10 to 20 °F). - Soil pH: Neutral. - Watering: Medium. - Sunlight: Full Sun. - Milkweed Sampler Pack. Here are five of the most popular milkweeds. All are American Native Wildflowers. They all have the same growth characteristics. All are extremely winter hardy, except the Tropical Bloodflower (Annual). Most milkweed is a Perennial with a fairly long lifespan(5yrs+) Milkweed is the primary food plant of the monarch butterfly caterpillars. The monarch population has been decreasing by 50% a year for over ten years. The reason is not enough wild milkweed for the babies to eat. Once established this plant requires very little care. Drought and heat tolerant. Not picky about soils. One plant of Milkweed will form a large clump by its spreading rhizomes, which can be divided. This happens the second season and beyond. 400+ Quality heirloom seeds. Pic# 2,6 Common Milkweed (50 seeds) Pic# 3,7 Swamp or Rose Milkweed (50 Seeds) Pic# 4,8 Showy Milkweed (50 Seeds) Pic# 5,9 Orange Butterfly Weed (100 Seeds). Free same day shipping with tracking. - Asclepias syriaca-incarnate-speciosa-tuberosa- curassavica--- Common Milkweed (50 seeds)-Swamp or Rose Milkweed (50 Seeds)- - Showy Milkweed (50 Seeds)-Orange Butterfly Weed (100 seeds)-Tropical Bloodflower (200 seeds). - U.S. Grown organic seed. - Full sun. - Spring, soil temp 60F+. - SOW on surface. Press into soil 6"apart. Do not cover. Needs light to germinate. Keep moist - Germination 14-28 days. - Medium water. - Flowers are red, orange, pink. Blooms from summer through fall.