Hi folks. First time posting. I'm in Virginia, on a city lot. I've two massive pin oak trees in the back yard and intend a hugelkultur between them. I've got all the wood and debris already in place (mostly) and am now seeing that all the hugelkulturs out there are in full sun. So I'm wondering. Can hugelkultur work in the fairly dense shade beneath these two trees? I have been envisioning ferns and shade plants growing on it. Any comments or experience-based info is appreciated.