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Decumaria barbara L.
Decumaria, Climbing Hydrangea, Woodvamp
Hydrangeaceae (Hydrangea Family)
USDA Symbol: deba4
USDA Native Status: L48 (N)
A woody vine to 30 ft., attaching by rootlets, with smooth, shiny, round to oval, deciduous leaves and fragrant flowers in flat-topped terminal clusters. Individual flowers are small and pale white with numerous stamens, held 1 to 2 feet from climbing surface. The subsequent fruiting capsules are urn-shaped.
Unlike some forest vines, it maintains full leaf coverage from shady ground to sunny canopy, with glossy, dark green foliage providing an airy backdrop to the ethereal white blooms. Though it can be used as both a trailing groundcover and a climber, it will only bloom when climbing, and then only on new wood. Great for moist Southeastern gardens with seasonal flooding.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Leaf Retention: Deciduous
Fruit Type: Capsule
Size Notes: Climber, up to about 30 feet long.
Leaf: Dark, glossy green. Fall color is white and green.
Flower: Flowers 2 to 4 inches across
Fruit: Tan 1/4 inch
Bloom InformationBloom Color: White
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct
Bloom Notes: Blooms on new wood. Will only bloom when climbing, not when trailing on the ground. Flowers held 1 to 2 feet from climbing surface.
DistributionUSA: AL , AR , DE , FL , GA , LA , MS , NC , NY , SC , TN , VA
Native Distribution: S.e. VA, s. to FL & LA
Native Habitat: Low woods, swamps, river banks
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade
Soil Moisture: Moist
Soil pH: Acidic (pH<6.8)
Drought Tolerance: Low
Soil Description: Rich, acid soils.
Conditions Comments: Climbing hydrangea can be used as a ground cover, a high climber on trees, or a cover for ledges & rock outcrops, though it will only bloom when climbing. It is well-suited to moist situations.
PropagationPropagation Material: Softwood Cuttings
Description: Softwood cuttings are best, as it can take many years to bloom when started from seed.
Commercially Avail: yes
Mr. Smarty Plants says
Vines for shade in North-Central Georgia
August 07, 2009
I am looking for something to hide a 6' wood fence that will grow in almost full shade. I have an area approx 2 feet wide to plant in. Since the fence and planting areas are stepped -- about 8 feet f...
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National Wetland Indicator Status
BibliographyBibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
Bibref 841 - Native Alternatives to Invasive Plants (2006) Burrell, C. C.
Search More Titles in Bibliography
Web ReferenceWebref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resourcesUSDA: Find Decumaria barbara in USDA Plants
FNA: Find Decumaria barbara in the Flora of North America (if available)
Google: Search Google for Decumaria barbara
MetadataRecord Modified: 2023-04-05
Research By: TWC Staff