The spots may appear greasy or have a yellow border around them. Bacterial leaf spot can move into the stems, resulting in dieback of the ivy tips. Fungal leaf spot produces large tan to brown ...

As a small seedling, poison ivy looks like many other immature weeds, not quickly recognizable. As it continues to grow, poison ivy will grow its characteristic three leaflets com ...

Poison ivy, oak and sumac all can create itchy rashes from urushiol. What you need to know before the rash starts.

A few years ago I was leading a group of Merrimack College ecology students on a nature walk, when one of them pointed to a vine with five leaflets per leaf, and asked if it was poison ivy.

Poison ivy leaves are what we call compound leaves. Each leaf has 3 leaflets, hence the adage, “Leaves of three, let it be.” Another key identifying characteristic of poison ivy is that one side of a ...

The key identification characteristic of poison ivy is the leaf. Poison ivy has a compound leaf made up of three leaflets which can be 1 to 4 inches long. The middle leaflet is the only one with a ...