Farmland is often considered marginal because it’s rocky, steep, or because the soils are too shallow. But in much of the northeast and midwest, farmland is “sub prime” or less productive because it’s wet or poorly drained. Not wetland, but damp farmland that’s harder to access until it’s dry in mid summer. The question here is: what tree crops work for this soil? Chestnuts don’t like clay, or wet feet. But yellowbud or bitternut hickory is a great fit, and this tree produces high quality culinary oil for cooking, baking, salads, and bread. It tastes really good.
Jesse Marksohn is a pioneer of growing hickory trees for oil, and he might be the best person in the United States to speak on the topic. Carya cordiformis is hardy from Northern Florida to Northern Minnesota, so the range is huge, and so is the value proposition for ecosystems and farms.