Toxicity and Control
Some species, such as Poison ivy (Rhus toxicodendron, syn.Toxicodendron radicans), Poison oak (Rhus diversiloba, syn. Toxicodendron diversilobum) and Poison sumac (Rhus vernix, syn. Toxicodendron vernix), have the allergen urushiol and can cause severe allergic reactions. Poison sumac may be identified by its white drupes.
Mowing of sumac is not a good control measure, since the wood is springy, resulting in jagged, sharp pointed stumps when mowed. The plant will quickly recover with new growth after mowing. Goats have long been considered an efficient and quick removal method as they eat the bark, which helps prevent new shoots.
Read more about this topic: Sumac
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