I'm going to try and install that plastic edging (that comes in a big roll) around some of my flower beds. I'm sick of the grass taking over, and it's hard on the irises production. Plus I just don't have that much time to spend on them. Does anyone have tips on how to install this stuff? I've heard of using a couple flat shovels. Most importantly - will it at least slow down the grass infestation of my flower beds? Thanks, I'd appreciate any tips you have.