PlantsHydrangeas→Japanese Hydrangea Vine (Hydrangea hydrangeoides)

Common names:
Give a thumbs up Japanese Hydrangea Vine
Give a thumbs up Japanese Climbing Hydrangea
Give a thumbs up Hydrangea

Botanical names:
Hydrangea hydrangeoides Accepted
Schizophragma hydrangeoides Synonym

General Plant Information (Edit)
Plant Habit: Vine
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 7b
Plant Height: 20 to 30 feet or more
Plant Spread: 3 feet
Leaves: Good fall color
Unusual foliage color
Fruit: Dehiscent
Flowers: Showy
Blooms on old wood
Flower Color: White
Flower Time: Late spring or early summer
Resistances: Deer Resistant
Rabbit Resistant
Pollinators: Various insects
Miscellaneous: Monoecious

flower clusters

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Posted by ILPARW (southeast Pennsylvania - Zone 6b) on May 10, 2019 12:31 PM

I've only seen one specimen of this species from Japan. (There is also a Chinese Hydrangea-vine that is very similar with larger leaves and flower clusters from China, of course.) This specimen has climbed way up a full-grown Northern Red Oak tree in southeast Pennsylvania in the front yard of my biggest customer who is a plant enthusiast, having a number of such uncommon plants. This woody vine (liana) climbs by root-like holdfasts. I have seen the Climbing Hydrangea (H. anomala petiolaris) sold at some larger, diverse. conventional nurseries, but not this one. It is offered by some specialty nurseries.

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What is this? by Blazingsandals May 6, 2018 4:33 AM 5

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