Hi Gail, Weeeeds, the gardeners deligh, NOT. If and when your raised bed is empty or near empty of produce/planted stuff, just keep roughing up the soil with a hoe, pick out any weeds you have uprooted or disturbed. The answer is to do a regular hoe so you don't give the weeds a chance to get established. This will work on established weeds but will take a little longer. Happy gardening