Can I grow edible mushrooms on just decomposing leaves?

It’s autumn here and I can obtain lots of fallen leaves. The rainy weather will decompose them pretty easily, and I have some spots in the yard that never get any direct sunlight.

I can’t grow shiitake because I don’t have a drill and it’s hard for me to source suitable logs. I don’t have sawdust or woodchips either, so that rules out oysters and other easy types. But o can obtain leaves, both deciduous and non-deciduous (especially olive tree leaves).

Sure if you have enough leaves. It takes at least a foot deep precompaction, but I use leaves as my primary fodder for established wine cap beds.

Having lots of leaves to grow edible mushroom?

Yes, you can grow them on leaves but make sure those leaves are fresh and not moldy.