Butterfly or Tuberosa Milkweed Seeds - Food and Host Plant for Monarch Butterflies Butterfly Bush or Milkweed Tuberosa Monarch butterfly's Host for Egg Laying, Feeding, and Hatch and the tiny Catepillars Feed on the Milkweed. They form Chrysilises on the plant for their Metamorphosis It Takes 2 generations of Monarchs to Migrate in each direction (Canada to Pacific Grove and Mexico) and they need milkweed along their paths Plant These Seeds Yourself and Give as Gifts to Help Save the Monarch Butterfly