Why it's a standout: Drought and heat tolerant, this shrub thrives where many traditional hedging plants struggle. Its branches have lavender flowers from summer to fall and silver or green foliage. 'Rio Bravo' (shown) is extra-compact, while 'Lynn's Legacy' has bigger blooms; both grow 5 feet tall and wide.
What it needs: Full sun; dry, well-drained soil
Zones: 8 to 11