Recently a visitor to Good Earth Plant Company asked me “Hey, what’s that tall plant growing on your green roof?” I told her it was milkweed. What I didn’t say is that it might be the most important plant on the entire green roof. The Western monarch butterfly is one of the most recognizable insects in the world. It is called “the ambassador of nature.” In coastal California cities where migrating monarch butterflies have traditionally spent their winters like Pacific Grove, Pismo Beach, and Santa Barbara, there is a whole tourism industry built around the butterflies. Ten million monarch butterflies used to spend the winter in California during the 1980s, according to estimates.… Read More