There's an area of the "homestead" part of our land where I would like to establish a food forest beneath the canopy of existing Oaks and Elms. We expect the Oaks to die in the next decade from Oak Wilt, but the Elms seem to be doing fine. Since we fenced this area off from sheep and deer, a lot of little native fruit trees are coming up, Gum Bumelia Bumelia languinosa, as well as other interesting and somewhat rare understory trees such as Eve's Necklace (not edible as far as I know). This is an area of shallow soil over rock, our climate is hot and dry. Any special suggestions about how to establish more edible plants among these existing trees? Do you think making heaps of brush and other organic material between the trees and letting those rot for a few years before trying to plant would be a thing to try? Or should I try sowing green manure and slashing? I'm concerned with the shallowness of the soil and lack of moisture.
If photos of the area would be helpful I can post some tomorrow.