If you come into contact with poison ivy, poison oak or poison sumac, you'll likely break out in an itchy, uncomfortable rash ...

The University of Massachusetts Extension Weed Herbarium offers pictures of various parts ... there are ways to avoid poison ...

In the fall, the leaves may be red or yellow. In the winter, the plant loses its leaves. However, touching the vine can still cause a rash because all parts of the poison ivy plant - from the ...