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.
4. Tie wisteria branches to a trellis or other support structure so that the main stems are generally growing horizontally rather than vertically. Stems should grow horizontally for at least 5 feet (1.52 m) before growing vertically.Make sure that stems are not allowed to grow downward. Plan to give wisteria a major pruning every 3 years or so to help it keeps its shape. 2  Wisteria need full sun and moist, well-drained soil to blossom. 3  They also prefer a sheltered location such as against the brick wall of house to protect them from the harshest winter winds.