I am putting in my huegelbeds. The first one I didn't use any soil amendments. However our soil is awful. I thinks of buying some stuff. Our landscaper sells cow manure, but at this time of year it is fresh and mushroomcompost. I have put in the woody layer, lawn clippings and some of the soil. if I use fresh cow manure (if this is good at all) do i put it as top layer or underneath? This bed will be tomatoes and either greens or beans. What about residues in the mushroom compost? And is it very alkaline?
If you put it in fresh this time of year to use in the Spring it will be ready to go by then. I put fresh manure in my hugel beds and plant immediately in soil placed over the manure. I've seen some evidence of soil imbalance but nothing horrific.