One of the toughest plants in the shade garden, bigroot geranium (Geranium macrorrhizum) doesn't mind heat or drought. And, deer and rabbits typically pass it by in search of tastier morsels. This plant puts on a spring show with pink or white flowers; some varieties also offer outstanding fall coloration in their woodsy-scented foliage. Bigroot geranium is hardy in Zones 4-8 and grows 2 feet tall.
Top Picks: 'Album' offers white flowers; 'Ingwersen's Variety' offers clear pink flowers; 'Variegatum' has purple-pink flowers and white-variegated leaves.
Plant it with: Add height and interest to your shade garden by planting bigroot geranium in front of toad lilies.