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Climbing hydrangea

Decumaria barbara (accepted: Hydrangea barbara) · Hydrangeaceae

Your local evidence lens

Separate evidence questions, never one approval badge

Set a ZIP to compare this record with state distribution, native range, USDA hardiness, and invasive records.

A genus split is not a placement verdict. Set a ZIP to read the local documented split.

1. Fire evidence and conditions

Fire evidence
Highly flammable — location does not change the cited classification.
Fire-performance conditions
No test or rating condition is normalized.
Fire ecology context
No section-reviewed fire-ecology context is normalized.
Placement evidence
1 source placement record; source schemes remain separate.
Evidence regions
NC; North Carolina; North Carolina / southeastern US
Maintenance
No sourced horticultural maintenance assertion is normalized; fire-test conditions do not supply maintenance advice.
Typed publication scope: 1 scope across 1 cited fire source
  • Fire-Resistant Landscaping in North Carolina (AG-874) · Official scoped edition
    • NC; complete normalized coverage · 2025-03-26

      The complete three-table AG-874 plant list is explicitly for North Carolina and contains 202 low-, medium-, or high-flammability rows. FireApproved accounts for all source rows under its strict taxonomy and lineage rules; source scope does not establish local suitability at a particular North Carolina site.

2. Why this plant is relevant here

State distribution
Documented in AL, AR, DE, FL, GA, LA, MS, NC, NY, SC, TN, VA.
Native range
The legacy compatibility field lists NC in native range; its field-level source was not retained.
Introduced / established
No introduced or established row is normalized; that does not prove native status.
USDA hardiness
Documented range 6a–8b.

3. Legal, ecological, and broader status

Legal-list status
Set a location for an exact legal-list result; source silence is not clearance.
Seed-list status
Set a location to compare the separate state noxious-weed seed layer.
Reported invasive here
No ecological invasive report is normalized; that does not prove noninvasiveness.
Broader regional context
Aggregate AK, HI, and L48 evidence is shown only as regional context, never as an exact-state finding.
Federal context
Federal designations remain separate from state legal-list results.
How to read this page

The status above is computed from the cited rows below: independent recommendations can support a fire-resistant result, an avoid row can produce keep-away, and disagreement stays visible as conflict. Placement notes preserve each source’s own scheme rather than translating unlike rules into one scale. This is evidence about a plant, not permission to plant it in every part of the defensible space; Zone 0 remains noncombustible.

Climbing hydrangea (Decumaria barbara)
Photo: (c) Kristály Cravens-Liszak, some rights reserved (CC BY) (CC BY), via iNaturalist. Species-typical, not necessarily this cultivar.
Form
vine
USDA hardiness
6a–8b
Legacy native field
NC · field-level source not retained
Grows in
AL, AR, DE, FL, GA, LA, MS, NC +4
Rated in
NC; North Carolina; North Carolina / southeastern US
Family
Hydrangeaceae
Evidence
3 cited sources

Plant hardiness evidence

These values describe the plant source. Your ZIP zone comes from the separate 2023 USDA Plant Hardiness Zone Map. Whole-zone values stay whole-zone, and a single unresolved value is not treated as a tolerance range. Different source boundaries stay separate: overlapping statements are compared independently, while only ranges with no shared zone are called a conflict.

Where its sources say to plant it

Placement rules below use each source's own distances or named zones, tied to its rating. They are not interchangeable with the directory's current Zone 0 guidance.

The evidence

Grouped by what each source concluded. Primary evidence rated the plant itself (a lab, field program, or original curation); corroboration compiled or republished another source's rating and resolves to its root lineage.

Avoids (3)

Fire-resistant vines instead

Trumpet vine
Campsis radicans Virginia creeper
Parthenocissus quinquifolia Fragrant honeysuckle
Lonicera sempervirens Yellow passionflower
Passiflora lutea Hops
Humulus lupulus Rubia silvestre
Rubia peregrina

Fire-resistant vines listed above

Last verified 2026-08-26. JSON (CC BY 4.0)

Profiles: USDA PLANTS · GBIF · Wikidata ·

Decumaria barbara (Climbing hydrangea). FireApproved. https://fireapproved.com/plants/decumaria-barbara/. Last verified 2026-08-26.