Why it's a standout: It may bear the name autumn sage, but this 3-foot-tall plant actually blooms from early summer all the way into fall. Flowers are usually red and trumpet-like, but you'll also find varieties in pink, purple, and white. A native that hails from the desert of Texas, autumn sage prefers dry weather and can handle freezing temperatures in arid regions.
What it needs: Full sun; dry, well-drained soil
Zones: 6 to 10