Heat and drought don't faze this one—gomphrena thrives in the worst our summers throw at it, holding tight clusters of papery flowers that dry right on the plant. Butterflies find it irresistible, and it'll keep going strong through October if you give it full sun and decent drainage.

Deadheading is optional; even spent blooms stay neat and colorful. Slip it into a border, a pot, or anywhere you need reliable color when everything else is gasping for water.