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UNION, Iowa -- When you venture outside this summer, be on the lookout for Wild Parsnip. The poisonous weed grows in nearly all 50 U.S. states.
In fact, the plant's growth in Iowa has prompted Department of Natural Resources there to issue a warning, KCCI reports.
Wendy Prusha, of Union, Iowa, was exposed to Wild Parsnip while working in her yard. She developed a rash and ended up in the emergency room.
"It's a constant burning. It just bubbled up overnight," she said. "The oils sit on your skin. It's a constant burning and it eats away your skin."
Parsnip looks like a dill plant or Queen Anne's lace. It is yellow and can grow about four feet tall.
When parsnip weed comes into contact with skin and is exposed to sunlight, it induces a rash similar to severe burns.
If you are exposed to a poisonous plant, the Center for Diease Control recommends: