Q: Several years ago I thought that I heard you say that there was no poison oak or sumac in Georgia. An employee of my landscaping company went to a doctor’s office with a severe rash, but the doctor told him that it was poison sumac. Do we have that here?
A: Theresa Schrum, native plant expert, says a few things need clarification.
“Poison ivy, Toxicodendron radicans, is rampant throughout the state. Pacific poison oak, Toxicodendron diversilobum, doesn’t exist in Georgia. Atlantic poison oak, Toxicodendron pubescens, is uncommon in the southern part of the state and rare in the northern part of the state.
“Poison sumac, Toxicodendron vernix, is a wetland plant. It is listed as growing in only 18 of our 159 counties.
“The rash caused by these plants is identical as they all have the same chemical irritant: urushiol. To differentiate a rash from one plant to another is impossible. This doctor should stick to rashes and leave botany to the professionals. The rash was almost certainly caused by poison ivy.”
poison oak berries