Also, be aware that oils (the substance which causes the ill-effects) are still toxic even after the leaves have fallen off the plant, such as in the fall. The oils also can transfer from one surface ...

Poison oak rash is an allergic reaction to the leaves or stems of the western poison oak plant (Toxicodendron diversilobum). Home remedies and medical treatments can help manage symptoms.

When you’re spending time outdoors this summer, in your own yard or hiking in a park, it’s useful to know to spot poison ivy.