As a master gardener, I've spent decades digging in the dirt and have made my fair share of mistakes doing it. But I've also learned a lot, including which plants I'll never add to my yard again. Even as someone with tons of experience, there are some plants that are just more trouble than they're worth, and I'm here to save you from the headaches I've had along the way. Here are the four plants that are permanently banned from my yard - and why you should consider skipping them, too.