Why does this shrub turn such a beautiful red? To warn us? Don't touch me! Winter is coming! I'm angry! I will make you itch so bad you'll wish you had poison ivy! Or maybe it's set its table for us. Come see my lovely white berries! How can you resist! Well, we damn well better resist! Let the birds do the job of spreading poison sumac. But we can still enjoy the show if we're willing to visit the fen.