poison ivy and poison oak. Easily confused with other white flowering plants, poison hemlock is one of the most toxic plants found in the state, according to the Oklahoma State University Extension.

So this method only works if you don’t have poison ivy between your pretty flowers or in your veggie patch. But this can work ...

The plant may have yellow or green flowers or yellow-green berries, depending on the time of year. Like poison ivy and poison sumac, poison oak releases an oil called urushiol when it sustains damage.

Poison sumac is considered more allergenic than poison ivy and poison oak, which are other well-known plants in the Toxicodendron genus of the sumac family. Poison sumac releases an oil known as ...