Japanese Wisteria (Wisteria floribunda) in the Wisterias Database

Common names:
Give a thumbs up Japanese Wisteria
Give a thumbs up Wisteria

General Plant Information (Edit)
Plant Habit: Shrub
Vine
Sun Requirements: Full Sun
Water Preferences: Mesic
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 9b
Plant Height: 30 to 80 feet long
Leaves: Deciduous
Fruit: Other: brown legume pods to 6 inches long
Fruiting Time: Fall
Late fall or early winter
Flowers: Showy
Flower Color: Purple
Flower Time: Spring
Dynamic Accumulator: Nitrogen fixer
Toxicity: Other: Pods and seeds are poisonous
Pollinators: Various insects
Miscellaneous: Monoecious

Japanese wistera (floribunda) trained as a standard

Photo gallery:

Comments:
Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Feb 4, 2018 6:45 PM

The Japanese Wisteria is occasionally found in Eastern and Midwestern landscapes in the US. It is a powerful, fast-growing woody vine (liana) that twines clockwise upon things. It blooms before the foliage emerges, with violet or blue-violet large grape-like clusters on old wood in April-early May. It is a very rampant vine that will kill trees if growing upon them and can break trellises or fences that are not strong, and it will grab anything. In USDA Zone 5 it often does not bloom because of late frosts. When it gets old it often does not bloom much, so gardeners often will give it super-phosphate and root prune to get it to bloom better. It has escaped cultivation in some areas. especially down South, and is invasive and a nuisance. There is a very similar Chinese species that should be considered a variety as the two can hybridize. The Chinese is supposed to leaf out a little later and climb counter-clockwise. They both can ground sucker and become quite a mess.

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Discussion Threads about this plant
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