Both varieties can reach heights of 25 feet and more. The Chinese flowers bloom before the foliage expands while the Japanese bloom and leaf out simultaneously. A Chinese cultivar named Alba produces fragrant white bloom. Two other featured Chinese cultivars are Black Dragon, with dark purple flowers, and Plena with rosette-shaped lilac flowers.
A lovely Japanese cultivar is Longissima Alba with clusters of white flowers 15 inches long. Pale rose Rosea has purple tips and grows 18 inches long. Wisteria was named in honor of Caspar Wistar, a distinguished 18th century botanist who was a professor at the University of Pennsylvania, president of the Philosophical Society and a friend of Thomas Jefferson.
The plant had flourished earlier in England. Saturday July 14, Regular pruning consists of shortening new growth firstly in August and again in February. See our page on pruning wisteria for more detail. By taking the time to prune your wisteria, you will be rewarded with a much-improved flowering display. Seed-raised wisterias can take up to 20 years to flower, so increase plants by layering , taking softwood cuttings in spring to midsummer, or hardwood cuttings in winter.
Professional nurserymen generally propagate wisteria by grafting , but layering is usually the most reliable method for home gardeners. Wisteria sinensis produces its flowers before the leaves appear, which can look spectacular in spring, and has stems that twine anticlockwise.
Wisteria floribunda bears leaves and flowers at the same time and has stems that twine clockwise. It has the longest racemes of all the species and is shown to best effect on garden structures such as pergolas where the racemes can hang free, unimpeded by branches or foliage. For an overview of wisteria problems, see our page on frequently asked questions.
The most common problem gardeners have with wisteria is poor flowering. This can be caused by a number of reasons, including:. Sometimes a mature and apparently healthy plant will suddenly die and be replaced by a new shoot growing from the ground. This appears to be caused by wisteria graft failure. Less common is attack by root fungi like honey fungus or Phytophthora root rot , but wisteria is susceptible to both of these.
Wisterias are also prone to scale insect infestation and may, more rarely, suffer from wisteria scale. Join the RHS today and get 12 months for the price of 9. Take action Why take action? Support us Donate Careers Commercial opportunities Leave a legacy. Join the RHS today and support our charitable work Join now.
Stout horizontal wires fastened to sturdy vine eyes screwed into the wall at intervals of 18in give the most unobtrusive support. A well-affixed trellis can be used, but the snaking stems can get behind it and, as they fatten over the years, they can prise it from the wall — regular untangling during winter pruning will reduce this risk. Feeding your wisteria with a generous helping of rose fertiliser rich in flower-promoting potassium and magnesium every March will help to promote regular flowering and healthy growth.
If your wisteria has been pruned and fed and grown on a sunny wall and still refuses to flower after three or four years, give it up as a bad job, haul it out and plant a grafted variety that will make up for lost time. Gateway to paradise: the wisteria-clad entrance to Dunsborough Park at Ripley, Surrey. Of the many varieties available, I particularly favour the old favourite Macrobotrys, which has flower trails that can be about 2ft long.
The white varieties are wonderfully classy and, in the right situation, can be as spectacular as those of lilac purple. We have tried salt and vinegar on the main plant, with no affect. How do I get rid of it?
Never bloomed where I planted it, but is coming up everywhere in the lawn and climbing trees. I have a Wisteria which I keep well pruned. I have need to replace the trellis. The trellis described on this page is significantly way overbuilt for my situation. From what I have seen Wisteria doesn't seem to have an issue growing on any sort of surface. Your thoughts? We have a wisteria we purchased a couple years ago in preparations for a pergola that I just finished.
The wisteria has never flowered, but seems to have leafed out fine every year and is probably about 3. We would like to grow it on the pergola in a pot. I'm not sure what the cultivar is because we bought it from Home Depot. We are planning to buy a Pink Ice wisteria for another one of the posts. How big of a pot should we plan on using for the wisteria? Plant it in the biggest pot you can find! How does Wisteria do in Central Florida? I've always loved it and what to plant some but I was wanted to know how well it grows here.
This is the first season for my Blue Moon wisteria. It is planted in a pot along a south facing wall. It has grown like crazy and very healthy.
I want to keep it growing in the pot. What do I do for our Zone 4 winter?? Just leave it where it is at? Cut it back and put the pot in my unheated shed? Will it hurt to cut a new plant back? Please Help!! You need to protect the roots, so you should move it to the shed or a garage. Pruning it back would certainly make moving it easier and you would not risk it breaking. You can let it experience a couple of freezes before moving it; this will help ease it into dormancy. Give it water occasionally through the winter.
Not a soak, just some dampness. Thanks for sharing such great information about planting, growing and caring for wisteria. The tips of caring for wisteria that you explained in your article are very well.
Wisteria is a vining plant that looks spectacular and can beautify the home. Also, they have a strong fragrance and can grow very tall. Since the native wisteria's flowers are unscented, are they still considered good pollinators? I was considering one and would like to go native, but didn't realize the native species were unscented. One of the main reasons I want one is the fragrance. Thank you for your question. We have updated our page to indicate that the native wisterias Wisteria frutescens and W.
I put a wisteria in my backyard but it didn't get enough sun and in years never bloomed. However, it got comfortable with it's location and eventually moved 12 feet horizontally along the fascia of my house, hitched onto a thin, tall 25 foot poplar and rode the poplar vertically before attaching to a mostly dead foot tall ash. I couldn't believe it.
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