What does poison hemlock look like? Look for small clusters of white flowers that eventually develop into “green, deeply ridged fruit that contains several seeds,” USDA states.

Q: One of my five oak trees is having this problem and I’m wondering what I should do. I hope it’s not a disease that could spread to my other trees. Thanks for any advice you can give me.

PORTLAND, Ore. (KOIN) — Pacific poison oak is found throughout Western Oregon and Washington and can cause painful rashes and blisters. Luckily, the plant is avoidable if you know what to look for.

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