Even without the leaves, you can still get a bad rash by pulling bare poison-ivy stems off of trees in winter. Q: I had poison ivy growing up a tree, so I pulled it out this summer, and of course, I ...

Tom Oder is a writer, editor, and communication expert who specializes in sustainability and the environment with a sweet spot for urban agriculture. John Manion is a guy who know his plants. That's ...

Question: We have a large live oak in our backyard, estimated to be over 100 years old. I am working on clearing out the brush that is under the tree. Can I spray commercially available poison ivy ...

While those shiny green leaves lining the base of a tree might look harmless, poison ivy isn't anything to mess around with, especially when the results of touching it are an itchy red rash that lasts ...

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 ...

“Leaves of three, let it be” is a classic rhyme about poison ivy, and it’s accurate: The plant’s triple leaflets are a reliable characteristic. But if you want to know more about this itch-inducing ...

Green is good, right? Yes, for the most part. But beware of poison ivy, oak and sumac – three green plants that will make you itch like crazy. These plants all cause contact dermatitis, producing ...

It was a close encounter in 2012 that made microbiologist John Jelesko take an interest in poison ivy. The Virginia Tech professor was cutting up a downed tree with an electric chainsaw. What he ...

Recently, after writing about mangoes, I received the following email from Steve Huffman: “It might be worth mentioning that mango sap can cause skin irritation similar to poison ivy. When I was a ...