Photo by Gary A. Munroe, courtesy www.xidservices.com
poison oak
Toxicodendron diversilobum
Weed Characteristics
Other Names: Pacific poison oak, pacific poisonoak
Leaf Type: Woody
Flowers: Inconspicuous yellowish-green
Leaves: Wide leaves with coarsely serrated edges; no hair
Life Cycle: Perennial
Grows as a dense shrub in fields, woods, and other undisturbed areas. It also vines up trees or creeps as a groundcover. leaves composed of three leaflets, the middle one slightly larger. Glossy, bronzy young foliage becomes green in summer, and turns orange-red in fall.