PlantsWisterias→Japanese Wisteria (Wisteria floribunda)

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

Japanese wistera (floribunda) trained as a standard

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
WISTERIA floribunda 'Cascade' by Wally2007 Apr 20, 2021 1:29 PM 3
Spring planting of Wisteria by Wally2007 Mar 7, 2021 1:44 PM 3
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Help me ID this vine! by Clairevirga Jun 11, 2020 11:52 AM 6
Is this tree of heaven, staghorn sumac, or something else? by dman1972 Jun 19, 2020 6:55 AM 9
Alternatives to Wisteria by Scofield23 Mar 7, 2021 1:32 PM 2
Plant ID by Vallato Apr 23, 2020 5:02 PM 5
Wisteria by Revmal09 Jul 21, 2019 9:21 AM 1
Mystery Shrub by BadBob Jun 9, 2019 9:22 AM 6
April 2019 -- Photos and Chat by zuzu May 3, 2019 9:46 AM 402

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