To attract Monarch butterflies, we planted milkweed in our garden. Milkweed, the only plant Monarchs will eat, provides all the nourishment they need to transform the Monarch caterpillar into the adult butterfly. The results: a summer filled with Monarchs throughout our neighborhood. Note: Because we maintain a strict limit on the maximum number of each gallery-for-sabil photo sold, this photo is only available in 8x10.