Native to Central America and Mexico, Ageratums do well in warmer climates and are easy to care for and maintain (although four species of Ageratum are native to the United States). Depending on the strain, this plant can grow up to three feet high. Benefits from deadheading. Great for beginning gardeners. May produce tiny dried fruits, but it is mostly known for it's fluffy flowers that come in lavander-blue, pink, lilac, or white.