Poison ivy, oak, and sumac contain an oil called urushiol that causes an allergic skin rash. These plants can be identified by their leaf structure, though some non-toxic plants look similar. To avoid ...

Editor’s note: Once a month, OSU Extension Master Gardener Volunteers in Franklin County profile a plant that occurs naturally in central Ohio. The staghorn sumac (Rhus typhina, previously Rhus hirta) ...

Summer is in full bloom and so are plants and weeds that can cause you harm. Outdoor enthusiasts, gardeners and just about everyone else should know about poison ivy, poison oak, poison sumac and ...

One recent hot morning a light wind was blowing yellow leaves off walnut and poplar trees. It had been hot and humid for several days, which accounts for some of the yellow leaves, but these leaf ...

Summer is finally here, so that means it's time for hikes in woods and trips into the outdoors. But if you're not careful, you might come across an unwelcomed part of nature — poison ivy. So before ...

Toxic and poisonous plants grow in Michigan, including giant hogweed, poison ivy, poison oak, wild parsnip, poison sumac and poison hemlock. Contact with the plants can cause skin irritation, blisters ...

When I announced to some friends that I was planning to establish a native sumac grove on my property, the first thing I heard was, “Why would you want to plant that trash tree on your property?” I ...

The staghorn sumac (Rhus typhina, previously Rhus hirta) is a common plant with a strikingly uncommon appearance. The young branches of the staghorn sumac are upright, with velvety red-brown hairs, ...