Nectar plants are wonderful to attract butterflies to your garden, but if you want butterflies to colonize your garden, you need to plant their caterpillar host (food) plants. We all know Common Milkweed and Marsh Milkweed are the best host plants for Monarchs, and here are a few more suggestions. When you plant, they will come! And you will have the wonderful added benefit of watching their life cycle unfold.
Monarchs are dependent upon milkweeds during every stage of their life cycle. Milkweeds are not only their caterpillar food, it provides nectar to myriad species of pollinators.
Don’t you love the colors of the third stage, or instar, of the Cecropia Moth caterpillar? Only about an inch and a half long in the photo, in the final fifth instar, before it pupates into a cocoon, the caterpillar will be as large as a large man’s thumb.
In its second instar in the above photo, the caterpillar resembles the developing birch flower catkins. This is an evolutionary form of mimicry against predation by birds. Cecropia Moth caterpillars eat not only the foliage of American White Birch trees, but also other species of birch trees, apple, ash, beech, elm, lilac, maple, poplar, Prunus and Ribes species, white oak, and willow.
Thank you so much again to my friend Christine for the gift of the Cecropia moth eggs.