Most of the time, weeds are simply annoying, but these plant species could cause more severe harm to you, your pets, and your ...

It's bad enough that gardeners have to deal with weeds, but downright terrifying when some of those weeds have toxic effects when touched. While it might be tempting to go out into the garden ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

Wash the skin with soap and water to remove the resin and prevent a rash. Poison ivy rash looks like red blotches or streaks with tiny blisters. Urushiol resin can stay active for years and spread ...

Poison ivy and poison oak rashes are caused by urushiol oil. Washing your skin right after contact can help reduce symptoms. Using hydrocortisone cream can reduce inflammation and redness. Poison ivy ...

The genus Rhus, recognized for its wide range of biological activities, is a rich reservoir of bioactive phytochemicals. Chemical investigation of Rhus alata (R. alata) leaves led to the isolation and ...