Poison Oak and Ivy ALWAYS grow their leaves in groups of three. It doesn’t matter if the leaves look like ivy leaves, oak leaves or have a simple oval shape.
Look for the pattern of three leaflets branching from a single, independent stem.
You’ll find two leaves attached directly to the stalk, opposite each other.
The third leaf will jut from between them on a short stem, forming a distinct T pattern. In dry weather the leaves may droop, making the pattern hard to identify.