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DESCRIPTION:
Pacific poison-oak is a perennial vine or shrub, sometimes treelike in form.
It is known for its milky, poisonous oil that can cause a severe skin rash.
Plants have three leaflets per leaf that turn bright red in autumn. It is
particularly troublesome in the dry sandy soils of the foothills and
dry-farmed mountain orchards. It reproduces from underground stems and from
seed.
See UC IPM's Poison Oak Pest Note for more information.
Broadleaf ID illustration.
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