I am going to sheet mulch this week. We finally pruned those poor apple trees. I am going to innoculate the cardboard with King Strofaria, Pearl Oyster, and Shaggy maine mushrooms, which should help it break down a bit quicker and provide some tasty shrooms.
Now, I just got one metric shit ton of 2 year old horse manure/soil. My question is, with the cardboard down (2 layers, shroom spawn in between them), will say 6 inches of manure/dirt and three inches of moldy wet hay be sufficient for planting day?
My concern is that it will get too hot.