Unfortunately, they are. They are sprouting everywhere. They’re sunk about two feet into the soil and now covered with cucumber vines, so I’m not inclined to hoist them up mid-summer. But pulling them up is definitely on the to-do list for fall cleanup.
Trust me. Although mimosas are rather pretty trees with charming fan-shaped pink flowers, they are extremely invasive. We have a grove of them—and many more volunteers—to prove it.