making new garden - how deep should the loam be?
Hi, I'm making a new garden, approximately 30' x 40'. The soil is just sand with scant pine litter on part of it, nothing I'd try to improve or use for veggies, etc. My plan is to buy as much screened loam as I need, and just raise the whole area. How deep should I make the loam? Do I need to loosen up the underlying sand at all, by rototilling it? Thanks in advance for any advice you can give.