With its sturdy vines and clusters of fragrant blooms, wisteria is one of those impossible-to-miss plants. Allow plenty of space for wisteria, because the vines can extend more 25 feet as they twine around a fence or trellis, and the clusters of flowers can grow up to 18 inches in length. Wisteria can become invasive, and will need an occasional pruning to keep it under control. Plant wisteria in spring or fall.
Start with a healthy, young wisteria plant from a greenhouse or nursery, and choose a planting spot in sun or partial shade. The soil should have good drainage, so any place where water tends to pool won’t be a good choice.
Dig a hole that is as deep as the wisteria’s root ball, and at least twice as wide. Work a shovelful of compost into the bottom of the hole.
Remove the wisteria from its container and plant it carefully in the hole. Fill the hole around the roots halfway with reserved soil, and then let a hose run until the hole is full. Once the water settles, fill in the remainder of the soil.
Provide a sturdy trellis, fence or pole for the wisteria to climb on. Once the wisteria reaches the desired height, keep the top pruned to encourage the plant to grow outward. Train the vines to grow around the support, and prune as needed to keep it in shape. Pruning the wisteria will keep it under control, and will promote more blooms.
Give the wisteria an inch of water per week for the first growing season. After that, water only when the weather is hot and dry.