List of Geranium Cultivars

USDA Zones 3 and 4

• Geranium macrorrhizum "Bevan's Variety" is cold hardy to USDA zones 3 and 4, where it grows to 12 inches tall in sun or partial shade. Bevan's Variety generates magenta flowers from April into July. It is a cultivar of the bigfoot geranium, so named because it produces a rhizomous root system that helps the plant spread, making it appropriate as ground cover. Geranium maculatum "Elizabeth Ann" is a form of wild geranium that blooms in April and May and sometimes again in the fall. It grows to 18 inches, features chocolate-colored foliage and has blue-lavender flowers.

USDA Zones 5 and 6

• Late spring to early summer is the bloom time in USDA zone 5 and 6 for Helen Gallagher, a spotted geranium cultivar with white flowers. Helen Gallagher develops to 36 inches high and, like many geraniums, it does best in damp areas. Geranium cinereum "Ballerina" is a small cultivar of hardy geranium for zones 5 and 6, growing to only 6 inches. It has pink flowers and produces more flowers when you place it in a sunny location.

USDA Zone 7

• Geranium subcaulescens is a hardy geranium from Italy and Turkey; Guiseppii is a cultivar with gray-green foliage and magenta flowers possessing dark centers. USDA zone 7 is the warmest region Guiseppii will thrive in, as it does not tolerate very humid and sweltering summers. Johnson's Blue is a well-known hardy geranium cultivar to landscapers, grown for its periwinkle-blue flowers. It matures to 18 inches tall, and it is not a favorite of rabbits and deer when they look for something to eat on your property.

USDA Zone 8

• When you grow Geranium "Tanya Rendall" in USDA zone 8, plant it where some afternoon shade will protect it from the sun. Tanya Rendall generates red flowers, is just 8 inches high and blooms from May into July. The flowers of Geranium "Sweet Heidy" combine three different colors; petals are bluish-purple, while the white centers feature a pink area surrounding them. Sweet Heidy works well in gardens, but it also is suitable for hanging baskets and containers.