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Poison Oaks Toxicodendron

Every rated Toxicodendron record is keep-away — 1 of 2 records; none is rated fire-resistant. These counts describe the cited records — 2 records carrying 2 evidence rows from 1 cited source; they do not make one verdict for the genus.

Keep away

1 species

Poison ivy Keep away Toxicodendron radicans Limited evidence · 1 source Zones 4–4

Awaiting evidence

1 species

Poison sumac Awaiting evidence Toxicodendron vernix Mid-scale score · 1 source Zones 5–5

About poison oaks

Corpus context. Toxicodendron is the directory's #538 largest of 550 genus groups: 2 records carrying 2 evidence rows from 1 cited source, recorded as vine, tree , hardy across USDA zones 4–5. Those are corpus facts, not a whole-genus flammability claim.

More about Toxicodendron: Wikipedia — external references; not evidence sources.

Where rated poison oaks grow

Tagged as growing in 30 states.

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.

Alternatives to poison ivy →

See Toxicodendron on Grow → · JSON