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Climbing Hydrangea

Decumaria barbara

In the Carolinas and Georgia, found in swamp forests and bottomlands, moist forests in the mountains. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

51
Strong

Native to Louisiana. How scores work Is it native here?

Profile 82%

Height
12–36 feet
Spread
1–3 feet
Light
Dappled sunlight, Deep shade, Full sun, Partial shade
Soil moisture
Usually moist

Space about 2 ft apart from its recorded spread, about 25 per 100 sq ft. Enter your bed size for a count

Will it fit your yard?

At a glance

Life cycle
Woody perennial
Leaves
Deciduous
Bloom
May to June
Fruiting season
July to October

Recorded in 17 Louisiana parishes.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 3

Swamps

Forested wetlands with standing water much of the year, such as cypress and gum swamps.

Floodplain and bottomland forests

Forests on low ground beside rivers and streams that flood from time to time.

Moist forests

Forests on moist but not wet ground, such as rich slopes and ravines.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Louisiana. Shared habitat, not food. 120 animals.

All wildlife of Louisiana

Ecological relationships

Who uses this plant?

What these records mean

7CaterpillarsGenus host records with ranges including LA

Genus host records with ranges including LA · Hydrangea

  • Acharia stimuleaSaddleback Caterpillar Moth
  • Amphipyra pyramidoidesMiranda Underwing, Copper Underwing, Copper Amphipyra
  • Darapsa versicolorHydrangea Sphinx
  • Estigmene acreaSalt Marsh Moth, Acrea Moth
  • Gandaritis atricolorataDark-Banded Geometer
  • Herpetogramma bipunctalisSouthern Beet Webworm, Two-Spotted Herpetogramma
  • Spilosoma virginicaVirginian Tiger Moth, Yellow Woolybear Moth, Yellow Bear
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
17BeesSoutheastern regional records

Southeastern regional records · Hydrangea

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist beesPollen specialists
—BirdsRecorded genus food-resource interactions; not a state feeding claim

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Hydrangeaceae
Hardiness
Zones 6a–8b
Soil pH
Acidic
Flower color
Cream or white
Fruit begins
July
Fruit ends
October

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
Also known as

Decumaria barbara; Decumary; Woodvamp

Conservation status

Louisiana rankSNR
Global rankG5
LA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources