Orange , Swamp, Common, and Showy Milkweed all Perennials. Orange (Asclepias tuberosa), Swamp (Asclepias incarnata), Common (Asclepias syriaca), Showy (Asclepias speciosa). Fall Planting is great. Seeds will cold stratify naturally through the winter. If planting in Spring, cold stratify your seeds in the refrigerator first. Plant seeds 1/4-1/2 inch apart, and then cover them with about 1/4 inch of additional soil. Water the area frequently after planting until plants become established. Detailed Instructions below. Also we recommend watching YouTube videos! Long blooming perennial pollinator attractor Heirloom variety with long lasting, white summer blooms Thrives in bright, sunny growing areas Monarch populations have been in decline for a number of years, and the loss of nectar sources and milkweeds has been indicated as a major contributor to these declines. This mixture is composed of native wildflowers, garden flowers and milkweeds which supply nectar sources for adult monarchs. Milkweeds are utilized for egg-laying and provide food to monarch caterpillars. Crisp blooms atop lush foliage are a sight to behold all on their own, but once they begin to attract bright and beautiful butterflies to your yard, we're sure that Milkweed will become an instant favorite! A long blooming perennial, it takes some time to establish Asclepias from seed, but the effort is well worth the reward