How hard is it to control this plant? I ordered one because I was desperate enough to hide my neighbor's rusty junk car from view I had decided to sneak over at night and plant it next the car. Now I have hopes that the town may make them get rid of the junkers in their yard. My daughter has some fencing and right back of that the neighbor has a pile of ragged metal junk back of his garage. She would like to hide that and keep the children from that pile. But I would hate to give her something that would take over her yard. Actually there would be more sun on her side of the fencing. Is just cutting it all the way back each spring sufficient or will rhizomes pop up all over the place?