This hub compares 2 species records. Across all 2 records, it carries 2 evidence rows from 1 distinct cited source. The species split is 1 keep-away and 1 awaiting directional evidence. The species records remain separate: their evidence does not become one verdict for the genus.
Plant forms recorded in this group: vine, tree. The records span published USDA zones 4–5. These are record-level fields, not a whole-genus flammability claim.
More about Toxicodendron: Wikipedia
— external references; not evidence sources.
FA Exhibit ID-010. Three vines on your fence: Virginia creeper, English ivy, poison ivy. Morphology from USFS FEIS PARQUI, HEDHEL and TOXSPP. Safety guidance from NIOSH 2010-118. Plates: Britton & Brown 1913 and Thomé 1885, public domain. Identification only — no flammability claim. Confirm uncertain material with a regional key or a botanist. CC BY 4.0.
The answer for poison oaks is no. Here is what to plant instead.
Alternatives matched by form and place, each carrying its own evidence.
