Flowers are succeeded by bean-like pods in fall.

Leaf form is pinnate (feather-shaped).

There are three main types (two Asian and one American).

Japanese wisteria tree with hanging white and purple flower vines

The Spruce / Evgeniya Vlasova

Those of Asian key in are covered in fuzz; those of the American key in are smooth.

Wisteria Care

Wisteria is a large vine best-suited to a spot where it has plenty of room.

The trunk becomes massive eventually, attaining a weight that would topple weak supports.

Japanese wisteria hanging over arbor in garden

The Spruce / Evgeniya Vlasova

Give this twining vine a sturdyarborfor support.

Wisteria is a toxic plant, so exercise caution when growing it around kids and pets.

Warning

Both Chinese and Japanese wisteria are invasive in North America.

Chinese wisteria vines with purple flowers

The Spruce / Evgeniya Vlasova

This is another reason why some North Americans prefer to grow American wisteria.

Light

Wisteria performs best in full sun when grown in the North.

In the South, down in zone 8, however, it profits from afternoon shade.

Japanese wisteria vines hanging with white and purple flowers

The Spruce / Evgeniya Vlasova

Soil

The most important soil requirement for growing wisteria is good drainage.

Water

Wisteria has average water needs.

Fertilizer

Use fertilizer high in phosphorus (the P in theNPK).

Chinese wisteria tree in garden

Chinese wisteriaThe Spruce / Evgeniya Vlasova

Because wisterias belong to a plant family known for itsnitrogen-fixingability, don’t fertilize them with nitrogen.

They have enough already.

Early spring is the best time to fertilize.

Japanese wisteria hanging over arbor

Japanese wisteriaThe Spruce / Evgeniya Vlasova

Asian wisterias need regular pruning to keep their shape.

Since they’re vigorous and spread through runners, you must prune yearly to restrict their growth.

The less vigorous American wisteria requires less pruning.

American wisteria branch with purple flower clusters

American wisteriaThe Spruce / Evgeniya Vlasova

A cutting should have two sets of leaves and a node; it should be four inches long.

No special steps are required to winterize it.

Nitrogen can cause energy to go into the production of leaves at the expense of flowers.

But it requires full sun for optimal flowering.

Fabaceaerefers to the legumes.

The legumes with which you are probably most familiar are beans andpeas.

A clematis with pink blooms will stand out nicely against a wisteria with deep blue or purple blooms.

Examples of pink clematis vines areC.

montana’Broughton Star' andC.

Safe and Poisonous Garden Plants: Toxic Plants (by Scientific Name).University of California.

Wisteria floribunda, W. sinensis.United States Department of Agriculture.