Good for flower bed- Lay down a thick layer of CARDBOARD in your raised garden beds to kill the grass. It is perfectly safe to use and will fully decompose, but not before killing any grass below it. They’ll also provide compost and food for worms.
Put newspaper over the dirt pages thick & then cover it with mulch. The newspaper will prevent any grass & weed seeds from germinating, but unlike fabric, it will decompose after about 18 months. By that time, any grass & weed seeds that had been pres