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) ...

Poison ivy, poison oak and poison sumac can make for an uncomfortable summer or fall. If you have ever experienced the blisters, swelling and intense itching of even the briefest of encounters, then ...

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 ...

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, ...