Could I put a layer of wood ashes, a layer of shredded newspapers, and a layer of dried lawn grass from last year with a layer of dirt between each in a raised garden that I want to make?
Wood Ashes, Shredded Papers, Etc.
Certified GKH Gardening Expert
Yes, this is fine and will not only break down over time but will fertilize and nourish both the soil and plants. This article will help you with that: https://www.gardeningknowhow.com/special/urban/raised-beds-for-urban-settings-no-digging-required.htm