Bluegillerkiller, I've had these two plots for about 4 years and have just mowed the edges to keep it in check. I appreciate your concerns and believe you're correct if just let go. Or, have I just been lucky and it will become more invasive? I have a mound between my neighbor's house and my driveway and would like it there for privacy. It does grow fast and look similar to bamboo but does not stay green year round. You can't walk through this stuff, it's that thick. It's a bear to remove because it just snaps off and is very pithy. Your right, digging would be the only way to rid myself of it.