Can You Grow Wisteria Up A Fence

A strong support structure, like this well-made pergola, is necessary for wisteria.

Wisteria can transform a landscape into a beautiful shade cover, privacy screen, or focal point in just a few years because to its climbing dexterity and quick growth habits. The long flower clusters of wisteria work best when trained to grow on pergolas, arbors, and other sturdy overhanging supports to provide a gorgeous floral canopy. Wisteria is also trained onto large trellises in Japan to create blooming tunnels in the spring. Wisteria can also be draped over garden benches or arched entryways, trained onto fences, stone walls, or wires fixed on those structures.

Even though you might be tempted, wisteria’s vice-like grasp will eventually strangle the tree even if you let it twine around the trunk. Wisteria can be trained to grow as a single-trunk, free-standing tree by staking the plant’s thick, woody stem to a strong post or 4-by-4 firmly planted in the ground. Remove all undesirable growth along the trunk as the plant matures, leaving only the top to continue to grow. Wisteria can be cultivated as a bonsai tree or in huge pots using the same methods on a smaller scale.

Make sure the system is strong whatever of the trellising technique you use. Use sturdy materials, such as strong metal tubing set in concrete or pressure-treated or rot-resistant wood beams, as wisterias will easily topple flimsy timber trellises. You should also avoid growing vines next to your house since they can encircle gutters and creep under siding.

Remember that moving wisteria later can be very challenging, if not impossible, once it has established itself. Because you might not be able to change your decision afterwards, carefully consider your planting location and design intention.

Where shouldn’t wisteria be grown?

In order to support the massive vine, the wisteria’s root system extends out widely and dives deep. Do wisteria roots exhibit aggression? Yes, wisteria’s root system is highly aggressive. Avoid planting wisteria next to walls or walkways because of its extensive and strong root system. These are easily harmed by a wisteria’s root system.

Experts advise inserting a corrugated panel about 6 feet (1.8 m) long and several feet (1 m) broad beside the plant to redirect the roots if you find a wisteria close to a building or pathway.

Does wisteria require a trellis to grow?

In the spring, wisteria blooms ferociously, producing clusters of lilac-colored flowers on fresh growth that develops from spurs off the main stalks. Check out our Wisteria Growing Guide for more information on wisteria maintenance, including planting and pruning.

About Wisteria

Wisteria is a long-living vining shrub with cascades of blue to purple blossoms that, in the spring and early summer, look stunning hanging from a pergola or archway. However, this vine is known to grow fairly heavy and to grow quickly and aggressively, frequently reaching lengths of more than 30 feet. It’s advised not to put wisteria vines too close to your home since they will squirm their way into any crack or crevice they can find.

Beautifully fragrant wisteria flowers offer a feast for the senses. A brown, bean-like pod remains on the plant during the winter after flowering. There are only blooms on fresh growth.

Note: Be careful when planting wisteria! The wisteria plant contains lectin and wisterin, which are poisonous to people, animals, and even pets. If taken in significant quantities, these poisons can result in anything from nausea and diarrhea to death.

Is Wisteria an Invasive Plant?

The wisteria species Wisteria sinensis and Wisteria floribunda, which are not native to North America, are regarded as invasive in several areas. If you want to add a new wisteria to your garden, we advise choosing one of the native North American varieties, such as American wisteria (Wisteria frutescens) or Kentucky wisteria (Wisteria macrostachya), which are excellent alternatives to the Asian species.

Do you want to know how to distinguish between North American and Asian species?

While North American wisteria is not quite as aggressive in its growing tendencies and has smooth seed pods and fruits in addition to more-or-less cylindrical, bean-shaped seeds, Asian wisteria is an aggressive grower with fuzzy seed pods. Another distinction is that the flowers of American and Kentucky wisterias appear in the late spring after the plant has begun to leaf out, whereas those of Chinese wisteria do not.

When to Plant Wisteria

Plant during the plant’s dormant season in the spring or fall.
Wisteria can be grown from seed, although plants from seeds frequently take many years to mature and begin to bloom. It is advised to buy wisteria plants that are already established or to begin with a cutting.

Where to Plant Wisteria

Put a plant in full sun. Even while wisteria will grow in some shade, it won’t likely bloom. Sunlight is necessary.
Wisteria should be grown in fertile, wet, but well-draining soil.
Wisteria will grow in most soils unless it is in bad condition, in which case you need add compost. Find out more about soil improvements and getting the soil ready for planting.
Because wisteria grows swiftly and can easily engulf its neighbors, pick a location apart from other plants.
Additionally, wisteria is renowned for encroaching on and infiltrating surrounding buildings like homes, garages, sheds, and so on. We highly advise against growing wisteria too near your house!
Wisteria vines need a very strong support, like a metal or wooden trellis or pergola, to climb on. Plan carefully and use substantial materials to construct your structure because mature plants have been known to become so heavy that they destroy their supports.

Wisteria looks gorgeous growing up the side of a house, but use caution when planting it because it is a very strong vine that will get into any crack or gap!

Caring for Wisteria

Apply a 2-inch layer of mulch and a layer of compost under the plant each spring to keep moisture in and keep weeds at bay.
Phosphorus is often used by gardeners to promote flowering. In the spring, work a few cups of bone meal into the soil. Then, in the fall, add some rock phosphate. Study up on soil amendments.
If you get less than an inch of rain each week, water your plants. (To determine how much rain you are receiving, set an empty food can outside and use a measuring stick to gauge the depth of the water.)
During the summer, try pruning the out-of-control shoots every two weeks for more blooms.

Pruning Wisteria

In the late winter, prune wisteria. Remove at least half of the growth from the previous year, leaving only a few buds on each stem.
Also prune in the summer after customary flowering if you prefer a more formal appearance. On fresh growth, spurs from the main shoots of the wisteria develop its blossoms. Trim back every new shoot from this year to a spur, leaving no more than 6 inches of growth. So that there are no free, trailing shoots, the entire plant can be trained, roped in, and otherwise organized throughout this procedure.
Mature plants that have been cultivated informally require little to no more pruning. However, for a plant that has been formally trained, side branches should be pruned back in the summer to 6 inches, then again in the winter to 3 buds.
Possess you a fresh wisteria? After planting, aggressively prune the vine. Then, the next year, trim the main stem or stems to a height of 3 feet from the growth of the previous year. After the framework has grown to its full size, midsummer extension growth should be cut back to where it started that season.

What kind of vine grows best on fences?

The Most Epic Fix for an Ugly Fence Is Climbing Vines

Shop now for jasmine at Amazon.com (Star Jasmine plant, $22).
Honeysuckle.
Clematis.
Roses that Climb.
Wisteria.
Hydrangeas climbing.

How can I encourage my wisteria to grow?

Wisterias should be trained as an espalier with horizontal support wires (3mm galvanized steel) spaced 45cm (18″) apart for best results when growing them against a wall. As an alternative, you may train them to climb a strong pergola or perhaps a tree. It is best to attach supports before planting because it will be much more difficult to do so after the wisteria has been planted.

Plant your wisteria in the spring or fall. To increase the soil’s fertility and drainage before to planting, add a lot of well-rotted manure or garden compost to the area. Because you’ll be sharing your home with the plant for a very long time, it’s critical to take the time to establish perfect soil conditions for your wisteria from the very beginning.

Use the depth at which it was planted in the pot as a guide for planting your wisteria outside. If you’re planting a bare-root wisteria, check the base of the stem for a soil mark that shows the depth at which the plant was inserted into the ground at the nursery. This is typically located just below the graft point, which is a bulge in the stem where the rootstock and main plant are joined.

How is a wisteria fence trained?

Wisteria sinensis or W. floribunda are the two species that we grow the most frequently. The former Chinese wisteria bears its flowers prior to the development of its leaves. The blossoms of the Japanese wisteria floribunda develop simultaneously with its foliage. These details have a significant impact on the species you should choose to raise. W. sinensis thrives on vertical surfaces (house walls, fences, trellises), where its bare blossoms will be best seen. It is preferable for W. floribunda to grow up and over strong arches, arbours, and pergolas. As a result, the longer racemes (bunches of flowers) can hang down and be completely free of the leaves.

How to plant wisteria

Wisterias grow best in soil that is fertile but well-drained. Even though they perform best in direct sunlight, they can tolerate little shade. They can be grown in big containers. To prevent a “rain shadow,” make sure plants are 30–40 cm away from the base when growing up a vertical surface (the dry, shaded area closest to the base of walls and fences). Back the shoot up toward the ground.

Wisteria can be grown into a free-standing specimen; more on that later.

Training wisteria as a climber

When preparing Wisteria to climb, there are only four guidelines to remember:

In July or August, reduce the whippy shoots from the current year to just five or six leaves. This improves bud formation and speeds up wood ripening by increasing air movement and light penetration through the leaf.
In January or February, perform a second cut, only removing two or three buds.
Strong, taut training wires positioned horizontally along a wall or fence are used to train desired shoots. Use soft twine to secure shoots to these wires.
If it’s necessary to remove old, diseased, or unwanted shoots, wisteria will react nicely to hard pruning. However, be cautious since shoots entwine around one another; you don’t want to unintentionally harm good, productive growth.

Training wisteria as a free-standing specimen

In your garden, grow a few free-standing wisterias for something a little different.

Plant a wisteria with a single stem next to a reliable support (1.5m or more). The single stem should be tied in and let to extend all the way to the support’s top.
In the first spring after it has reached the peak, cut off the single stem tip.
Trim the upper side shoots to 15 to 30 cm in length and remove the lower side shoots. The plant now has a sturdy “head” from which to grow.
August is the time to prune August shoots back to seven leaves once the head has gotten sufficiently woody.
To keep your shape, trim any old, undesirable head shoots in the winter.
To reveal flower racemes, trim March shoots back to 2.5 cm of their bases.

Can wisteria be grown up against a house?

Wisteria can be grown against a house wall or another robust building, like a sturdy pergola. Wisteria can be grown in a container, but only if done so as a conventional tree and with regular trimming to keep its shape. This is a highly labor-intensive option.

Wisteria can be planted in spring or fall. Plant at the same level as it was in the original pot and water in thoroughly after thoroughly preparing the soil to guarantee a proper root run. Like an espalier fruit tree, tie the stems to horizontal galvanized wires connected to the wall. Remove all but one stem if it is climbing a pergola, and tie this stem to the post.

How to plant wisteria in a pot

Wisterias can be planted in pots, but because they are hungry plants, you will need to feed them frequently. Choose this option only if you’re training your wisteria to be a standard. Use a quality tree and shrub compost and the biggest pot you can fit. Plant at the same height as it was in the first pot and give it plenty of water.

How to care for wisteria

The wisteria plant is ravenous. During the growing season, fertilize once a month with a high potash fertilizer to promote greater flower blooming. Weekly wisteria fertilizer and watering. Use organic mulch in the fall, such as well-rotted horse dung or homemade compost, to protect your plants.

How and when to prune wisteria

Wisteria should be pruned twice a year in August and February. Focus on integrating the plant into the support throughout the first few years. This entails cutting back side shoots to five buds in early August, training in strong side shoots, and removing very low branches.

How to prune wisteria in summer

Wisteria that is pruned in the summer will produce short spurs that will transport the spring blossoms.

Cut the long, robust shoots back from the base of the current season’s growth to a few buds.
Choose a few sturdy shoots from young plants (less than three years old) to tie to wires or a trellis.
Simply cut back side shoots on older wisterias to the base of your strong shoots.

Expert David Hurrion demonstrates how to prune wisteria in the summer in this little video. He demonstrates which stems to cut and how much to remove precisely:

How to prune wisteria in winter

By pruning both in winter and in the summer, you can promote the growth of the short spurs that bear the spring blooms. Anytime between late October and March is the dormant season, so do this.

Connect fresh growth to the main structure to increase its support
Cut back the remaining long stems sharply.

David Hurrion demonstrates how to control robust, leafy growth so it doesn’t cover budding flower buds in this video on winter-pruning wisteria:

How to propagate wisteria

Few gardeners cultivate wisteria; most opt to purchase a plant instead because it can take up to 20 years for a wisteria to bloom from a cutting. However, take softwood cuttings in the middle of April if you’re up for a battle.

Young stems should be cut into lengths and trimmed to 10 cm, just below a leaf joint.
Leave roughly four leaves at the top of each cutting after removing the lower ones.
Fill pots with cutting compost, then fill them with water and let the water drain.
Cover the cuttings with a clear plastic bag after inserting them into the pots so the leaves don’t contact.
Make sure the cuttings are kept moist by keeping them in a well-lit area.
Remove the bag and pot after growth is visible.

Growing wisteria: problem solving

Lack of blossoms is the most frequent issue wisteria gardeners encounter. Expecting blooms before the plant is four years old may be impractical because wisterias take their time to bloom.

David Hurrion provides tips on where to plant your wisteria, how to prune it, and how to feed it to get the most blossoms here.

Will wisteria damage my foundations?

In the spring, a house covered in wisteria looks magnificent. Can the roots harm your foundations, though? In our Quick Tips video, Catherine Mansley from BBC Gardeners’ World Magazine explains: