Pruning Tips Sometimes people complain that their wisteria is not blooming. To the left is our septic tank and to the right is our gray water tank- underneath all my perennial beds. It’s a wisteria, so I’m thinking it will grow back and maybe I can keep it within the bounds of ruliness this time. That's why it seems counterintuitive to say prune it now. [1] X Research source If you are hard pruning an old, neglected wisteria, don't do everything all at once. As the new vines develop from the original trunk, direct their growth onto your supports (cable or trellis). The wisteria will produce more extravagant growth over summer, and in August it will need another pruning. Both species put out loads of runners that can be pruned more than twice a year if the plant is threatening to take over a structure - especially your house. They also make standard trees from Wisteria. But for the gardener who has limited space and wants to enjoy more visible and abundant wisteria flowers, a pruning routine becomes a necessary chore. Prune wisteria in late winter. Less fertilizer is better than over fertilizing. I found myself tilting my head to one side as I looked. Keep in mind that the seeds and fuzzy seed pods of wisteria are toxic. You can prune the woody structures, like branches and twigs, after the leaves have fallen. Facebook. Plan your wisteria’s first pruning of the year around late winter. What amazes me most is that I didn’t try to move. By pruning in winter and again in summer, you will encourage the development of short spurs that carry the flowers in spring. The ideal way to grow wisteria against a wall is to train it as an espalier, with horizontal support wires (3mm galvanised steel) set 30cm (1ft) apart. Yet for all its rampant behavior, a wisteria in full bloom is one of the loveliest sights. I live in Michigan and have trouble with them blooming past one year. Always wear gloves when trimming and pruning, and wash your hands after handling a wisteria. You will want to wait until the tendrils have grown a bit before cutting them back. Wisteria is a rampant climber that bears long vigorous shoots that turn into a ‘bird’s nest’, producing few flowers. Side shoots and laterals (stems growing off the main stems) are pruned back just above the fifth or sixth bud from the main stem. The most deadly parts of the plant are the seeds and seedpods—so if you have children or pets, it's a good idea to remove these parts after the plant has flowered. She is also a freelance writer and art curator, who’s been published in Fine Gardening, Horticulture, ArtNews, Art in America, the Village Voice, and many other publications. Or, how you really can over-prune a wisteria. "You can tackle most flowering shrubs once a year, but wisteria is so insanely vigorous there's an advantage to summer pruning as well as in winter. It’s collapsing!” And sure enough, he was right. She has also written and edited several art-related books. Wisteria can live a long, healthy life with no pruning at all, happily twining, climbing, and sprawling over everything in its path. Who knows how it happened—a miscalculation, a mishap, or just over-zealous clipping—but the whole vine left its moorings on our garage and came crashing forward. In the fall, once growth has ended for the year, prune heavily with garden scissors or pruning shears. If you've waited what seems like too long, however, there are some things you can do to nudge it along. "They can be quite heavy and should be grown on a strong structure.". So I thought I'd share some advice that will hopefully re-assure new growers how simple a task it is, provided you have a sturdy ladder and a good set of secateurs. For effective wisteria pruning, a gardener should decide whether the vines are to grow up a porch or balcony, along scaffolding, or over other plants. It’s best to prune them in December and June or July. A fun fact: The world's largest known wisteria is in Sierra Madre, California, measuring more than 1 acre and weighing 250 tons. I finished fertilizing, in a nonchalant trees-fall-on-me-every-day kinda way, then had mild hysterics. Or maybe not. These plants are vigorous climbers, so you typically need to prune them twice per year. In Japan there are many Wisteria display gardens. Last August our gray water starting failing and my husband says, “I’m going to get the septic guys out here soon to look at that.” Me, “O.k., let me know when so I can move some plants.” I come home THAT DAY and the septic side of the house (not the gray water) is destroyed. See, winter is the easiest time to prune, Bell said frame used enclose! 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