Wisteria can live a long, healthy life with no pruning at all, happily twining, climbing, and sprawling over everything in its path. This controls the size of the wisteria, preventing it getting into guttering and windows, and encourages it to form flower buds rather than green growth. It requires pruning twice a year: once in the winter, and once in the summer. Cut off above the seventh leaf any shoots that are not needed to extend the head, The following February cut back these shoots to 2.5cm (1in) of their bases, just as you would routinely prune a wall-trained plant. Wisteria begins to form next year’s buds during this time, so it’ll require more water than normal. Restricting the amount of vegetative growth and encouraging short, flowering spurs will result in more flowers. Other points to consider when hard pruning; 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. The long vigorous shoots are cut back to a couple of buds from the base of the current season’s growth. Thanks Gardenlily1 and Obelixx. Use new growths that develop near the base of plants as replacement shoots, if necessary, or cut out at their point of origin. Although it seems complicated, wisteria pruning is quite simple if … Through a process called deadheading, you can achieve a second bloom in late summer or early fall, generally in September. It might encourage a second show of blooms towards August/Sept (usually not as many and smaller) . Join the RHS today and support our charitable work, Keep track of your plants with reminders & care tips – all to help you grow successfully, For the latest on RHS Shows in 2020 and 2021, read more, RHS members get free access to RHS Gardens, Free entry to RHS members at selected times », Reduced prices on RHS Garden courses and workshops, Our Garden Centres and online shops are packed with unique and thoughtful gifts and decorations to make your Christmas sparkle, General enquiries Then, cut back the same growths to two or three buds in January or February (when the plant is dormant and leafless) to tidy it up before the growing season starts and ensure the flowers will not be obscured by leaves. The Royal Horticultural Society is the UK’s leading gardening charity. Wisteria flowers bloom once per year. A careful, unhurried approach is needed if larger, thicker branches are to be removed and where a branch is twining it may be necessary to trace back and mark it at intervals with string before removing it. May 2018 in Plants. I think I would deadhead. the RHS today and get 12 months for the price of 9. How to Prune Wisteria. RHS members can get exclusive individual advice from the RHS Gardening Advice team. Log in or register to join the conversation. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. 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. it's now looking horribly brown and bedraggled and the petals are dropping all over the flower bed below, attracting slugs. Summer pruning wisteria encourages the development of short-flowering spurs that will carry the long racemes of bloom in spring. Wisterias can be left to ramble unchecked where space allows but will usually flower more freely and regularly if pruned twice a year. My beautiful wisteria has gone over so quickly, due to the very hot weather and then torrential rain 2 days ago. Mon – Fri | 9am – 5pm, Join the RHS today and support our charity. Likewise, hard pruning maybe required where maintenance needs to be carried out on the structure supporting the plant. Join The blooms appear in mid- to late spring, in May or June in most places. Wisteria is pruned twice a year, in July or August, then again in January or February. See our page on frequently asked questions on wisteria problems. For the best flowers, reduce the number of racemes by thinning out to give those that remain plenty of space to develop. The plant can take up to two months for all of its blooms to show through in their entirety. Over time, and with pruning twice a year, plants will build up a strong spur system. The removal of growth in summer allows better air circulation and more sunlight to reach the base of the young growths, encouraging better ripening of the wood and improving the chances of flower bud formation. Standard wisterias can be grown either as specimens in a border, or in a large pot. Although it seems complicated, wisteria pruning is quite simple if you follow our simple guide. Drastically shortening back long branches, removing sections of older stems to just above a strong young branch or growth shoot lower down, or cutting completely back to a main branch, or even to ground level may be necessary. Make sure the wisteria is planted to the same depth as it was in its pot from the nursery, spreading out the roots and loosening the root ball before planting. When you grow something as beautiful as the wisteria, you don’t want to ruin it by pruning it wrong.Therefore, make sure to prune your wisteria according to the directions below. Loads of slugs and snails lurking under it too. If you choose to grow into a tree, plant the wisteria on the south side of the tree, 1m (3ft) away from the trunk. Fed up with looking at the sad brown mess. Similar to other vines and plants like the lilac bush and the peony, wisteria benefits tremendously from pruning and deadheading. I'm wondering whether to deadhead the blossoms as most are within reach on a 5 ft wall. No. - George Bernard Shaw. As soon as it stops raining, I will start deadheading. Cut back the whippy green shoots of the current year’s growth to five or six leaves after flowering in July or August. They are only going to stay looking brown for a few days and then drop anyway. I have been clearing a solid feeling mat of rotted brown petals under my wisteria which has been smothering smaller plants trying to come through and making an unseemly mes of the path too. 020 3176 5800 Wisteria needs regular pruning to keep the growth and size under control, but it will also improve the flowering display. With older plants severe pruning may be needed to remove old, worn-out growths, or branches growing over windows or protruding outwards from the face of the building. "We don't stop playing because we grow old; we grow old because we stop playing." Lizzie27 Bath, Somerset Posts: 5,858. Deadheading wisteria? Wisteria needs regular pruning to keep the growth and size under control, but it will also improve the flowering display. times, frequently asked questions on wisteria problems, RHS Registered Charity no. Let’s look at a guide to step-by-step prune a wisteria. Wisteria is a popular climbing vine that produces beautiful purple flowers. Wisteria can be trained to grow up into the canopy of a small tree, but to the possible detriment of the tree. The end result should be a skeleton frame work of reasonably well-spaced branches. This will be used to create the main stem of the ‘lollipop’, If planting in a pot, John Innes No 3 potting compost is a good choice of compost. 222879/SC038262, If there are gaps in the framework suitably positioned, Other new growths can be pruned back summer and winter as for, Start with a young, single-stemmed plant, and insert a 1.2-1.5m (4-5ft) stout support next to it when you plant into the ground or container. My beautiful wisteria has gone over so quickly, due to the very hot weather and then torrential rain 2 days ago. Wisterias with long flower racemes are best admired on structures where they can hang free, unimpeded by branches or foliage. Are there any disadvantages? Choose a cheap container that is only slightly larger than the plant needs, potting it on gradually as it grows to fill its final display container, Train the stem vertically up the support (this is usually stronger than twining), Allow the plant’s leader to grow unchecked until it reaches the top of the support and then remove the tip in the following February to encourage the formation of sideshoots, Prune the sideshoots the following winter, shortening them to 15-30cm (6in-1ft) and repeat this process each winter to gradually build up a head, Weak or misplaced growth can be cut out entirely, as can older branches if the head becomes too dense in later years, As the head develops, prune in August as well. RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected it's now looking horribly brown and bedraggled and the petals are dropping all over the flower bed below, attracting slugs. PRUNING. 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