These plants bloom once, then die. The good news about these plants is that they often have spectacular blossoms in jewel-like colors. Examples of annuals are impatiens, dianthus, pansies, dahlias and nasturtiums. Nasturtiums do double duty by being edible as well as beautiful. The saucer-shaped leaves have a peppery taste. Marigolds are planted in vegetable gardens to discourage pests. A gardener shouldn’t feel too badly about annual plants though, for many of them self-seed so abundantly that they still come back year after year.