Wisteria is a large, perennial vine that grows up anything in its path and can reach more than 65 feet in length. The diameter of the wisteria reaches 15 inches as it ages. This ornamental vine produces 4-to-20-inch long flower clusters that hang like bunches of grapes. The spring blossoms are white, pink, lilac-blue and purple. Japanese wisteria twine around their supports in a clockwise direction and Chinese vines twine in a counter-clockwise direction. Wisteria leaves turn yellow in cool fall weather.
Remove the grass, weeds and debris in a 2-to-3-foot diameter circle. Prepare your planting site in an area that receives more than six hours of direct sunlight.
Loosen the soil to the depth of 18 to 24 inches with a shovel. Turn the soil over, and break up the dirt clumps. Keep working the soil over with a garden hoe until it is pebble-sized.
Spread 4 to 6 inches of peat moss, compost or well-rotted manure over the planting site. Work this into the soil to improve the drainage. Rake the soil smooth and level.
Install a trellis or some other support 12 inches from the center of the planting area. As the wisteria grows, train it to grow up the trellis.
Dig a hole in the center of the planting area that is as deep as the wisteria root ball. Place the wisteria in the hole so that the pant is not deeper than it was growing in its container.
Fill the soil in around the root ball, and firm it around the wisteria plant. Soak the area with water.