Plants. Lime makes soils less acidic and more alkaline. Most plants grow best in slightly acidic soil. By adding lime to the soil, you can kill a variety of pest plants. Fewer nutrients become available to the unwanted plants as the soil becomes less acidic.
Select a well-draining site in full sun for your wisteria. These plants require at least six hours of direct sunlight each day. They prefer moist locations that don't dry out excessively, but won't tolerate wet feet. Multiple plants will need at least 10 to 15 feet of space between them.
Pruning. Proper pruning techniques are essential for maintaining wisteria. Without pruning, wisteria vines can grow 100 feet or more. Any blooms the plant produces will be too high up to see.Wisteria should be pruned in midsummer to shorten the new lateral branches back to 6 inches. In late winter, it should be pruned again to the same effect.ertilizer. Wisteria, like many legumes, doesn't require a lot of fertilizer. In fact, too much fertilizer can delay or prevent blooming. Young wisteria plants benefit from an application of a balanced 10-10-10 fertilizer in the spring at a rate of 1/2 cup per plant.