All butterflies (including moths), as well as a wide range of bees, flies, beetles, and even hummingbirds, will feed on the nectar-heavy flowers of all milkweed varieties. The Monarch, however, seeks milkweed out on which to lay her eggs. Monarch caterpillars require milkweed to feed on prior to pupating, and they tend not to thrive when presented with alternative food sources. Planting milkweed is thought to be the number one step North American gardeners can do to help the endangered Monarch.
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