08/31/2026
Poison Oak + Poison Ivy Hybrid!!!!!
Based on the notes left by world famous botanist William Gillis, we traveled up the Columbia River Gorge to find the site he first discovered in the 1960's where plants that are Poison Oak - Poison Ivy Hybrids grow. This small stretch of the Gorge between the Dalles, OR, Hood River, OR and Lyle WA is the only area in America where these plants can be found!!!