Helping Monarch Butterflies (Conservation) Monarch butterflies only lay their eggs on milkweed, and caterpillars only eat milkweed. But humans don’t seem to like milkweed very much and are cutting it down for various reasons. Sometimes humans cut down milkweed in order to build houses, buildings and streets. Sometimes the milkweed is cut down when trees are removed to harvest the wood. In recent years there have been a lot of wildfires that have destroyed a lot of milkweed. Humans cut milkweed down in their own yards because it doesn’t smell very good or they think it is a weed. But these humans don’t realize that monarch butterflies need the milkweed in order to survive, and the monarch butterfly population is dwindling. The humans who do realize how much the monarch butterfly population is in danger because of the disappearing milkweed are doing something about it, and you can, too. These people are called conservationists. What they do is purchase some land or even set aside a piece...