A horticulture professor explains why this stubborn vine thrives and how to eradicate it.

Add Yahoo as a preferred source to see more of our stories on Google. Michigan's summer climate provides ideal growing conditions for many flowers and other plants we enjoy — and for a few poisonous, ...

Well over half of the human population is sensitive to poison ivy, poison oak or poison sumac. Rashes usually peak in early summer, and tens of thousands of people in the United States go to the ...

Poison ivy has three leaves, and the middle leaf has a longer stem. Touching poison ivy causes an allergic reaction due to urushiol oil. Poison oak and poison sumac are related to poison ivy and also ...