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Poison Oak

Toxicodendron Diversilobum

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Overview

Toxicodendron diversilobum, commonly known as Poison Oak, is a deciduous shrub native to western North America's forests and grasslands. It typically grows 1-3 feet high, with a spread of up to 5 feet. Its leaves, comprising three leaflets with variable shapes, resemble oak leaves and turn a striking red-orange in fall. Caution: The plant contains urushiol, causing severe allergic reactions upon contact. It thrives in U.S. hardiness zones 5-9.

Sun Full, Half, ShadeWater Low, Medium, Very LowZones 8–10Type Shrub, VineClimate Temperate
Poison Oak (Toxicodendron Diversilobum) — Native to the western regions of North America

Culture

Sun
Full, Half, Shade
Water
Low, Medium, Very Low
USDA zones
8–10

Shape & size

Classification

Type
Shrub, Vine
Family
Anacardiaceae
Climate
Temperate

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Photos (83)

Poison Oak (Toxicodendron Diversilobum) — While it might seduce with its autumnal hues; and considering removal if close human interaction is likely, image 54
Poison Oak (Toxicodendron Diversilobum) — Poison Oak can form dense thickets if allowed, image 53
Poison Oak (Toxicodendron Diversilobum) — Native to the western regions of North America; and considering removal if close human interaction is likely
Poison Oak (Toxicodendron Diversilobum) — shrub / vine for full or half or shade; and considering removal if close human interaction is likely, image 63
Poison Oak (Toxicodendron Diversilobum) — Direct contact can lead to an allergic reaction, with symptoms ranging from mild to severe rash and, image 58
Poison Oak (Toxicodendron Diversilobum) — hints at the diverse lobed leaves that can be easily mistaken for non-toxic relatives
Poison Oak (Toxicodendron Diversilobum) — and considering removal if close human interaction is likely, image 60
Poison Oak (Toxicodendron Diversilobum) — It typically grows 1-3 feet high, with a spread of up to 5 feet; and considering removal if close human, image 45
Poison Oak (Toxicodendron Diversilobum) — hints at the diverse lobed leaves that can be easily mistaken for non-toxic relatives; poison Oak can, image 50
Poison Oak (Toxicodendron Diversilobum) — Caution: The plant contains urushiol, causing severe allergic reactions upon contact; and considering, image 48
Poison Oak (Toxicodendron Diversilobum) — While it might seduce with its autumnal hues; and considering removal if close human interaction is likely
Poison Oak (Toxicodendron Diversilobum) — commonly known as Poison Oak; comprising three leaflets with variable shapes, image 43
Poison Oak (Toxicodendron Diversilobum) — a potent skin irritant.<br><br>For landscape purposes; poison Oak can form dense thickets if allowed, image 56
Poison Oak (Toxicodendron Diversilobum) — commonly known as Poison Oak
Poison Oak (Toxicodendron Diversilobum) — Caution: The plant contains urushiol, causing severe allergic reactions upon contact; and considering removal if
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Toxicodendron Diversilobum
Photographs by 10 contributors

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