The Clematis genus includes over 200 deciduous or evergreen vines. Depending on the species, clematis vines are hardy in United States Department of Agriculture Plant Hardiness Zones 3 through 9. Some species grow up to 20 feet long. The flowers range in diameter from 1/2 to 3 inches, and bloom in a variety of colors. According to the Ohio State University Extension, clematis plants require at least six hours of full sun exposure daily, with partial shade during the hot afternoon hours.
Clematis grows best in rich, well drained, neutral to slightly acidic soil, with a pH level near 7.0. Dig a hole 2 feet deep and 3 feet wide, and mix the topsoil with one third composted cow manure to provide nutrients and aid drainage. To protect transplanted roots from excess sun and heat, keep the soil moist and cover the soil with a 2-inch layer of mulch.
Transplant your clematis in the fall, winter or early spring, while the plant is dormant. Test the soil and prepare the site before you dig up the root ball. Your local county Extension office can assist you in obtaining a soil test kit.
To prevent transplant shock, avoid disturbing or damaging the roots. According to the Ohio State University Extension, keep as much moist soil on the root ball as possible when you dig up your clematis for transplant. For adequate root protection, the crown of the newly transplanted root ball should be 1 or 2 inches lower than the surface of the soil.