Wisterias may be slow to emerge from dormancy right after planting and may not leaf out until early summer. Wisterias are slow to mature and may not begin flowering until three to five years after planting.
Wisterias are rapid growers and can shoot up 10 feet or more in a single growing season. Regular pruning once in summer and again in winter not only keeps wisteria in bounds, it will also promote more vigorous flowering by establishing a framework of horizontal branches and inducing the formation of spurs at controlled intervals.
Additional summer pruning is often required. As soon as your wisteria takes off, begin tying selected lateral shoots to its support system and prune back unwanted growth. With older plants, a hard pruning may be needed to encourage new branch development. Do this by cutting back older branches to the main central stem. New side branches will soon replace the gaps and can be tied back into the support system.
Visit the Royal Horticultural Society to see a video demonstrating the proper pruning techniques for wisteria vines. Wisteria requires a sturdy support structure, such as this well-built pergola. With its climbing agility and fast growth habits, wisteria can completely transform a garden in just a few years, becoming a breathtaking shade cover, privacy screen, or focal point. Wisteria has the greatest impact when trained to grow on pergolas, arbors, and other strong overhanging supports so the long flower clusters can hang freely, creating a stunning floral canopy.
In Japan, wisteria is even trained onto massive trellises to form blooming tunnels in spring. You can also train wisteria onto wires mounted on fences or stone walls or drape them over garden benches or arched entryways. Although you may be tempted to let wisteria twine around the trunk of a tree, its vice-like grip will eventually strangle it.
To achieve a similar effect, you can train wisteria as a single-trunk, free-standing tree by staking the thick woody stem of the plant to a sturdy post or 4-by-4 embedded securely in the ground.
As the plant grows, remove all unwanted growth along the trunk, allowing only the top to grow. Using the same techniques on a smaller scale, wisteria can be grown in large pots or as a bonsai tree.
Whatever trellising method you use, make sure the system is sturdy. Wisterias will readily topple weak wooden trellises, so use durable materials such as heavy metal pipe set in concrete or pressure-treated or rot-resistant wood beams. Also avoid growing the vines alongside your house, because they can creep under siding and wrap around gutters.
Keep in mind that once wisteria becomes well-established, it can be very difficult if not impossible to move later. Choose your planting location and design intent carefully, because you may not be able to change your mind later.
Be patient, a newly planted wisteria may take several years to mature before it begins flowering. Moist, deep and fertile soils are preferred however will tolerate many soil types. Add blood and bone or a complete fertiliser before planting.
Plant in full sun, cm apart with the plant crown at soil level. Water well during dry spells, and regularly if grown in a pot. Drought tolerant once established. Wisterias are vigorous and yet easily controlled with secateurs. Prune to shape and direct plant where required. When the plant is young and fast growing a lot of pruning and shaping is required. Firstly allow the plant to grow to the required height then remove top shoots to encourage side shoots which you tie into the desired position.
Once the plant reaches full size, all you need do is prune unwanted growth. I would never shun the plain W. Growing wisteria in pots and containers is seldom successful, as the plants are so greedy when it comes to food and water.
It will need some support, but I remember massive free-standing specimens at Kew Gardens when I was a student there and, even then, they were a good century in age. Alan Titchmarsh talks about his love of bulbs, which ones not to bother with, and the difference between a gardener. Garden designer Anthony Noel extols the virtues of floral arches that delight the senses. Home Gardens. Wisteria on a house wall in the village of Broadway in the Cotswolds. Chinese wisteria Wisteria sinensis is more common than Japanese wisteria Wisteria floribunda , but both have similar needs.
Chinese wisteria blooms in spring and is hardy in U. Department of Agriculture plant hardiness zones 5 through 8. A less common variety, the American wisteria wisteria frutescens grows in USDA zones 6 through 9 and blooms in late summer.
Wisterias usually bloom within three to five years of planting. Some wisterias can take up to 15 years. Wisterias planted from seed can take as long as 20 years or might never bloom at all. Proper planting, pruning and care can accelerate the blooming process, though.
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