They do not give enough plastic cover, there was only approx 6” left on each side, we new it wouldn’t be enough so we not only buried it under soil but also large stones and re-bar hammered into the ground but even with this thin 3 weeks the wind managed to take the plastic off, very annoyed and total waste of time and money. Do not purchase, save up for a better quality. I also believe that not enough light gets through the green plastic.