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
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

          with hanging seedpod longing for spring

Photo gallery:

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
Thread Title Last Reply Replies
Zone 9a vine or shrub I.D. - Wisteria? by jerseyridgearts Feb 25, 2018 6:54 PM 4
Maryland Enacts Bans/Restrictions on Invasive Species by RickM Sep 13, 2016 11:57 AM 2
Wisteria Now Banned/Restricted for Sale in Maryland by RickM Jan 25, 2017 4:28 PM 9
Jardin Serre de la Madone, Menton, France by cliftoncat May 30, 2016 12:47 AM 5
Which Wisteria smells like grape? by purpleinopp Apr 1, 2016 8:44 AM 2
2016 Garden Chat and Photos by ssgardener Feb 25, 2017 2:24 PM 1,945
Wisteria by donnabking Sep 5, 2015 8:37 AM 19
Can't suggest changes by JRsbugs Dec 3, 2011 11:53 AM 4

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