To tell you the truth, I no very little about the big three nasty plants. I do know that I have numerous different types of ivys one of them being poison ivy. I may have poison Sumac, I'm not sure. I looked up poison sumac and I may have that also, I live in Cincinnati Ohio so I have no real idea if this is the climate for it sumac. I know little about plants.
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"Let's not miss the beauty of the forest by the ugliness of some of its trees." Bill W.