Cosmos (Cosmos bipinnatus)
Frilly daisy-like flowers bloom profusely on plants with lacy foliage from early summer through frost. Some varieties are perennial in warmer climates, while others are annual everywhere, but all self-seed, ensuring repeat performances in most gardens for years to come. Plant them in full sun, except for in southernmost areas, where they’ll appreciate a bit of shade. Available in yellow, pink, orange, red, purple, white and maroon.