I'm not sure if my way is considered the proper permie way, but this how I did it. I planted some peanuts as a cover crop this summer to enrich a very fallow area of my yard. It's in the back corner and gets some afternoon shade under a palm tree. This ground was mostly sand with rocks, bits of concrete, some light duff material on top from the palms and other wild plants that grow in that neglected corner of the yard. I opened a bag of peat moss and spread it all around and then worked it into the soil, the first 2" or so. Then I put a very small amount compost and a light layer of pine bark mulch on top. Then I watered the area with fish emulsion and soaked the bed real good w/water. My 4 year old daughter and I just threw the peanuts out there and barely covered them with layers of dirt/mulch . We watered and in about a week I have peanuts growing all over the place. They are happy where they are. I have sweet potatoes planted in there with them along the fences. So if they grew out here on my sandbar they'll grow in your yard.