Monarch butterflies are known for their annual migration from northern and central United States and southern Canada to Florida and Mexico, traveling thousands of miles, while the next generation will travel north. The population of Monarchs is decreasing rapidly, with some studies suggesting that they may be extinct within twenty years. You've probably heard this. Monarch butterfly larvae feed exclusively on milkweeds. When I was a kid, milkweed would grow along the rural roads, between the road and the tree line. Although it is generally believed that Monarch butterfly populations are decreasing because of insecticides and other poisons, I'm thinking that this may play a part, but the lack of a habitat may even play a larger part. Everywhere that I have lived in the past thirty years, road crews now keep the areas where the milkweed used to grow mowed close to the ground. That is the case in Michigan, where I grew up, and I am told that here in Maine as well, milkweed used to grow all along the roads but they are now mowed down before they can flower or create seed; thus they are unable to reproduce, which has led to an absence of milkweed. I have tried planting milkweed from seed on my land up north but it didn't survive the winter. Possibly, my land is too far north for it.