Milkweed, Swamp Milk Weed, Pink/red Flower, 50 Seeds! Groco SWAMP MILKWEED, (Asclepias incarnata) WINNER WILL RECEIVE 50 SEEDS!! Perennial Pink/ Red blooms 2 to 4 feet tall Full sun Hardy zones 3 to 8 We have had a bumper crop of these this year, and are passing them on at a low price to you. These are very easy to grow and are a perennial. Blooms first year from seed. Attracts monarch butterflies, bees and other butterflies as well. Seeds are large and have a high germination rate. Comes with planting instructions.