Illustration
Barbara Ann Climbing Hydrangea
Hydrangea barbara 'Barbara Ann'
Also called barbara ann wood vamp, woodvamp, wood vamp and decumaria barbara ann
Barbara Ann Climbing Hydrangea blooms from May through June.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Barbara Ann Climbing Hydrangea
Plant it in part shade. It prefers moderate water. It is hardy in USDA zones 5–9. Expect it to reach about 35 ft tall and 19 ft wide at maturity, in roughly 4 years (a house reading).
Is Barbara Ann Climbing Hydrangea toxic to dogs or cats?
- Listed as toxic to dogs and cats by Pet Poison Helpline and Royal Horticultural Society.
- Listed as poisonous to people by NC State Extension.
Lists differ and none is complete. If a pet eats a plant and seems unwell, call a veterinarian or a pet poison helpline.
What was checked
Mature height and spread, hardiness zones, sun, water, bloom months and color and the trait tags were checked against named botanical sources for this plant, with what the sources could not settle written down; years to mature size rests on a recorded house rule where no publisher states one, and is marked so; its common name and alternate names have not been checked yet. Each fact above carries its own mark. The planting, spacing and size sections are derived from these checked facts by a fixed rule, not checked separately, and the plant type is the library's own classification.
When to plant Barbara Ann Climbing Hydrangea
Plant Barbara Ann Climbing Hydrangea in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. In zone 7, the middle of its hardy zones 5 to 9, spring means March to May and fall means September or October. Once settled, it blooms from May to June.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 7, the middle of this plant's hardy range, start with zone 7 in March. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Barbara Ann Climbing Hydrangea get?
35 fttall5 ft 7 inan adult19 ftwideSee Barbara Ann Climbing Hydrangea in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
How far apart to plant Barbara Ann Climbing Hydrangea
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Give Barbara Ann Climbing Hydrangea about 19 ft of clear ground in every direction, measured from its center. It is one plant with room around it, not a row, and a raised bed is too small for it.
Add Barbara Ann Climbing Hydrangea to a garden plan and the planner draws it at its full width, so you see the spacing before you buy.
Where these facts come from
Barbara Ann Climbing Hydrangea's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 14 published sources on October 5, 2026. Each one is linked below with every fact it carried, which can include a fact this page still marks as not yet checked, because a source carrying a value is not the same as the value being held to the standard. Facts not in that list, and the planting, spacing and size sections, are not covered by these sources.
- Missouri Botanical GardenHydrangea barbara, species pageheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- NC State ExtensionHydrangea barbara, species pageheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases and pests
- Plant Addictsheight, spread, hardiness zones, sun, water, bloom months and color, trait tags and soil
- Chicago Botanic GardenPlant Finderheight, hardiness zones, sun, water, bloom months and color, trait tags and soil
- Sooner Plant Farmheight, spread, hardiness zones, sun, bloom months and color, soil and diseases
- treesandshrubsonline.orgTrees and Shrubs Online (International Dendrology Society)height, hardiness zones, sun, water, bloom months and color and trait tags
- dawesarb.arboretumexplorer.orgThe Dawes Arboretum (Arboretum Explorer)hardiness zones, sun, bloom months and color, trait tags and soil
- greenleafnursery.comGreenleaf Nursery (wholesale grower)height, hardiness zones, bloom months and color and trait tags
- pineridgegardens.comPine Ridge Gardenshardiness zones, sun, bloom months and color and trait tags
- plantfinder.nativeplanttrust.orgNative Plant Trust Garden Plant Finderheight, spread, hardiness zones and bloom months and color
- hydrangeasplus.comHydrangeas Plushardiness zones, sun and bloom months and color
- lichtenfelts.comLichtenfelt Nurseriesheight, sun and bloom months and color
- RHSRoyal Horticultural Society (Hydrangea barbara, species page)soil, diseases, pests and toxicity
- ASPCAHydrangeatoxicity
How the checking works, and what each standard covers, is on the verified plants page.
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Design a garden with this
Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.