Wisteria: Cascading Waterfall of Flowers

Wisteria, Cascading Waterfall of Flowers

It's that time of the year again. Wisterias are shining in gardens, arches, railings and onto the walls in the streets. Wisteria is the generic and common name for several species of woody climbing plants from the pea family (Fabaceae). Wisteria comprises around ten different species.

The two most familiar wisteria varieties are Chinese wisteria (Wisteria Sinensis) and Japanese wisteria (Wisteria Floribunda). The Chinese variety is perhaps the most common variety found. This vigorous climber drapes itself around any fence, arch or railing and produces cascades of flowers in blue, white or pink.

Vigorous and undemanding

Wisteria is named after the American professor Caspar Wistar (1761-1818). Some varieties twine around the stem in a clockwise direction, whereas others twine in an anti-clockwise direction. The Chinese wisteria (Wisteria Sinensis) is one of the varieties whose branches wind in an anti-clockwise direction.

Some wisteria varieties can reach a height of ten metres, although all stop at around four metres. As many gardens have limited space, wisterias need to be trained and their growth should be controlled with annual pruning. However, the wisteria is not a very demanding plant. All it needs is some sunshine, humus-rich soil and sufficient moisture.

Foliage and flowers

Wisteria is characterized mainly by its distinctive foliage and flowers. From May through June the plant is adorned with pendulous flower clusters with an average length of 25 centimetres. The flowers of the Chinese wisteria may be either blue or white. These lively flowers combined with the elongated leaves give the plant its stunning appearance.

Pruning

This shrub does not need much pruning. The growth of the leader needs to be curtailed slightly during the first two years, but after that all you need to do is keep the shrub in shape, tie down the side branches and encourage flower development. You can encourage the flower spurs to develop by simply cutting the side branches back to two or three flower buds from the leader. The flower buds are thick and rounded whereas the leaf buds are long and pointed, so it is easy to spot the difference, although this should be pointed out in order to avoid confusion.
Versatile but needs training.

As already mentioned, the wisteria is an ideal climbing shrub for growing against a fence or railing. However, it is not self-clinging. Therefore it's important to train the plant, otherwise it will hang down. Tie the plant to a robust construction, as a fully grown wisteria can be fairly heavy.

Wisteria can also be used to brighten up a dull wall. For this you need to drive strong hooks into the wall in order to attach the branches. Another creative possibility is to use wisteria to adorn a carport. As long as the branches are tied down properly, this can turn an uninteresting structure into a beautiful feature.

Besides the blue Chinese wisteria, we have a white and pink Japanse wisteria. The Wisteria Floribunda 'Alba' has beautiful white flowers and the Wisteria floribunda 'Rosea' has voluptuous pink flowers. So treat yourself to a cascading waterfall of blue, white and pink flowers.

Tip: Combine Wisteria with another great climber; Clematis.

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