Cleome is just one of the many self-seeding annual plants that come back year after year without any effort on your part. Also called spiderflower because of the spiderlike flowers, it grows 4 feet tall or better and brandishes large pink, purple or white flowers. Although it is a vigorous self-seeder, unwanted seedlings are easy to pull when they’re young. Because of its size, cleome is not a plant to be ignored. That size also makes it a great back-of-border plant in a flowerbed. Discover 10 wildflowers that do well in the city or suburbs.
Celosia is another rampant self-seeder that makes itself at home in your garden year after year. If so, consider yourself lucky, because the vividly colored blooms on this plant are a pure delight. They feature a variety of colors—from burgundy, red, magenta and pink to cream, orange and yellow. Celosia offers different flower shapes, too. There are plumes, crests and spikes. No wonder this annual is loved by so many gardeners. There’s a size to fit any garden, from 6-inch dwarfs to 3-foot-tall specimens. Meet dramatic Dracula celosia and other unusual annuals.