Kara, can you post another close-up pic of the pesky plant? Do you see growth coming from the crabapple stump? Or just a plant growing next to it? It's a mystery that has piqued many of us! Putting together the clues, including a clear picture of it, will help. When you step on it, you say it hurts? Thorny, coarse, sharp sticker edged leaves? Thanks 😊