*** Great to fill up a large raised bed, and add the planting on top. Next season will have great soil. Lasagna Gardening Layers - no dig gardening! Just layer and plant - this creates it's own soil even where there is none.
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.