Catmint thrives on neglect once it settles in—no fussing with water or fertilizer once the heat kicks in. You'll get airy spikes of lavender-blue flowers all season long, with a tidy mounded habit that stays neat without shearing.

Plant it in sun and average to lean soil, and it'll reward you with continuous color from late spring through fall. Bees and butterflies won't leave it alone, and cats will find it irresistible.