Love it or Hate it, there are no two ways about it. This plant will take over with very little encouragement. It spreads by its roots underground and soon will become unstoppable. Be careful with this. I planted three rooted stems, and now I cannot get rid of them. They have lovely blooms two or three times a year, and become ungainly in the winter and summer. Just cut them down. Like Lantana, they will grow back. Anyone want to try some, just email me.