If you have a hot, baked spot, lantana is your answer. This hardworking plant not only thrives with little moisture and in full, unyielding sun, it does so with ease. In fact, lantana is a flower that seems to have it all: It produces an abundance of brightly colored flowers all summer and fall, and it's a magnet for butterflies (hummingbirds like it, too). It's easy to grow and a great perennial groundcover, as well. Zones 2-11. 4'x4' blooms summer to frost.