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

If you're a former scout or have spent a significant amount of time wandering around the woods, you’ve probably heard the rhyme “leaves of three, let it be.” This mnemonic device, used to steer ...

Whether a vine growing up a tree is harmful or not will depend on the vigor of the vine and the size of the tree.

Skin irritation, redness, itching—you know the signs. If you’ve been out in the garden recently and have come away with a nasty rash, you may have gotten yourself into a patch of poison ivy. Poison ...

Perhaps it’s just me, but it seems as if my old nemesis is closing in and taking over just about everywhere. You’ll find it slithering into folks’ landscapes, creeping up the sides of houses, in city ...

You’ve probably heard the old saying, “Leaves of three, let it be.” For those who have spent time in the great outdoors, this is a rite of passage, much like the art of making s’mores. So, what am I ...

The dangers of touching or eating a poisonous plant range from mild irritation all the way to death. In the U.S. the hazardous plant you're most likely to come into contact with is poison ivy—or its ...

Add Yahoo as a preferred source to see more of our stories on Google. You're working in your garden, pulling weeds and making sure everything looks pretty. A few hours later, while admiring your ...

Anyone cleaning out overgrown areas or even just weeding should beware. Poison ivy (Toxicodendron radicans) may be growing among the plants you are handling. It pays to be able to identify this plant, ...

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

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