1/8 oz (625+ seeds) Asclepias syriaca common MILKWEED Virginia Silkweed - BUTTERFLY FLOWER SEED - Zone 3a - 9b ~!! Monarch Butterfly LOVES It This Order = 1/8 oz (625+ seeds) ~!! Hardy Zones 3a - 9b ~!! Plants Form Rhizomes ~!! S&H is FREE or a Low Flat Rate ~!! See Description Below for OUR Special Offers and Product Promotions ~!!