Here is the first draft of an essay that will be in an upcoming edition of the journal Backwoods (not to be confused with Backwoods Home Magazine).
I'm looking for feedback/critique/questions. Thanks and enjoy !
A Temperate Forest Garden Diet by Asadachi
For those focused on desertion and subsistence, here's what it might look like to grow some perennial staple foods nutritionally and spatially. The following piece was developed using a nutrition app called Chronometer and land requirements were identified by analyzing a variety of agroforestry sources. All yields were based on the lower range which is typical for low maintenance sites. This piece is by no means definitive or authoritative. It's just a snapshot of what's possible.
Chronometer sample entry for one day:
Nuts, chestnuts, Chinese, dried, 16oz: 1,646.6 calories
Hazelnuts, raw, 3 oz: 534.1 calories
Venison, stew, 8 oz: 358.3 calories
Persimmon, native, raw, 3 oz: 108 calories
Apple, fresh, with skin, 3 small apples: 232.4 calories
Artichoke, Jerusalem, sunchoke, raw, 1 cup: 109.5 calories
Stinging Nettles, 2 oz: 23.8 calories
Lambsquarters, raw, 3 oz: 36.6 calories
Shiitake mushrooms, cooked, 2 oz: 31.8 calories
Total calories: 3,093 calories.
Macronutrients: Carbs: 481.3 g, Protein: 123.8 g, Fat: 69.1 g
This sample entry hits almost all micronutrient targets. It falls short only in selenium, vitamin D, and sodium. Selenium can be increased through more meat and/or fish consumption. The vitamin D issue is solved through adequate sunlight when the body can synthesize it from the sun and sun-dried mushrooms for the months it can't. Sodium can be increased through salt consumption.
Every foraging culture relies on a wide array of wild foods with certain staple foods that are of particular importance. The storied !Kung have their mongongo nuts among other staple foods. For us in hardiness zones 4-9, annually bearing chestnuts and hazelnuts fulfill a similar important role. Acorns, walnuts, and hickory nuts will also play a vital role despite variable yields.
Chestnuts stand out as they bear annually, require minimal processing, and can last awhile dried or stored in moist sand like carrots. Mature chestnuts produce anywhere from 1,000-3,000 lbs per acre. A pound of dried chestnuts provides 1,646 calories. Approximately 3 acres will provide about 1,500 lbs of dried chestnuts (fresh chestnuts are 50% water) which is enough for 4 people to have a pound of dried chestnuts each day for a year.
Hazelnuts also bear annually, require minimal processing, and store well dried. Hazelnuts can be pressed into oil that has a similar lipid profile to olive oil. Mature hybrid hazelnuts provide 300-1,000 lbs per acre. 3oz of hazelnuts provide 534 calories. 1 acre will provide about 300 lbs which is enough for 4 people to have 3 oz everyday for a year.
Acorns were a staple food for foraging cultures across the world. However, oaks produce acorns at a variable rate with some mast years, average years, and rest years. By planting a diversity of oaks and oak hybrids, there might be more consistent yields. Acorns have a favorable macronutritonal balance when compared to other nuts. Some would recommend northern red acorns for their higher fat content and ease of storage. 8oz of dried acorns provides 1,154 calories. There is very limited data on acorn production per acre. Based on a USDA study on red oaks in NW Pennsylvania, red oaks produce roughly 150 lbs per acre in a poor year and up to 2,000 lbs per acre in a bumper year.
Walnuts (especially heartnuts) and hickories (especially hicans) offer a lot of protein and fat though with inconsistent yields. There is also a concern about oxidation of their polyunsaturated fatty acids (PUFAs) especially when heated above 300 degrees Fahrenheit. Hickory milk is delicious, easy to make, and would probably avoid the issue of oxidation/rancidity.
American persimmons can be enjoyed fresh from August to November with some trees holding on to their fruit deep into winter. They can be dried off the tree as well. Hernando de Soto described dried persimmon "loaves" that had a long shelf life. 3oz of American persimmons have 108 calories. Mature trees produce about 30-100 lbs per tree. The trees are dioecious so plant extra. 5-10 trees produce 150-1,000 lbs which is enough for 4 people to enjoy throughout the year.
Apple and pears are versatile and certain varieties store well over winter. Here are a few varieties that store well:
Apples: Golden Russet, Keepsake, Goldrush, Roxbury Russet, Ashmeads Kernel, Calville blanc d' Hiver, Reinnete Zabergau
Asian Pears: Korean Giant, Chojuro. Nijiseiki
Euro Pears: Dana Hovey. McLaughlin
3 small apples provide 232 calories. Standard sized apple trees produce around 8-18 bushels per acre. Standard sized pear trees produce around 3-6 bushels per acre. 10-20 apple and/or pear trees should be enough for 4 people.
Other notable perennial foods include sunchokes and groundnuts as root crops. Nettles are an excellent perennial leafy green vegetable. Hackberry persists on trees from fall to winter. They are mostly sugar so they dry easily and are shelf stable. Like acorns, they are found across the world among foraging cultures.
In Backwoods #2, there was a debate about vegan foraging societies. Although evidence of temperate vegan foraging cultures is lacking, it theoretically can be done by substituting wild meat or fish with more acorn and hazelnut consumption. However, there still might be concerns of some micronutrient deficiencies. That could be a topic for someone else to explore if interested.
5 acres should be enough to grow these perennial staple foods in a polyculture for a group of 4 people (3 for chestnuts, 1 for hazelnuts, and 1 for fruits/vegetables). In addition to these perennial staple foods, hunting, fishing, and foraging would round out and balance this diet. These trees will attract a lot of wildlife so plant a lot for our nonhuman neighbors. While trees are young, growing potatoes, squash, and other annuals can provide a lot of calories and nutrients. Ducks are a good livestock option and can be well integrated in a forest garden (Wellspring Farm). Once trees are mature and wildlife rampant, enjoy the mutual cocreation and abundance !
Email:
asadachi1@protonmail.com
Sources and recommended reading:
Sam Thayer- (all his books), Akiva Silver- Trees of Power, Edible Acres YouTube channel, Annie Bhagwandin- The Chestnut Cookbook, Ben Falk- The Resilient Farm and Homestead, Will Bonsall- Essential Guide to Radical, Self-Reliant Gardening, Ben Hewitt- The Nourishing Homestead