solarizing Japanese Knotweed
I inherited a yard that was badly neglected. In an area that I want to have a vegetable patch, there is a big clump of spreading Knotweed. I am planning on using solarization as a method of controlling the noxious weed. From what I've read on solarizing, you want to till the ground to bring any weed seeds up to the surface so that the sun can burn and sterilize them and any full grown weeds. I am very worried about tilling the knotweed, though. I've heard that this is a sure way to spread the weed even more. Does anyone know if I can just lay the plastic over the ground without tilling and still get the desired effect? I am planning on leaving the plastic down and building raised beds on top of it. I have walnut trees nearby so the ground is toxic to vegetables, anyway. I just want the are to be neat and weed free. I plan on putting mulch or stone down over the plastic once the boxes are build.