What Goes into a Food Forest Canopy

One concern I have with the phrase “food forest” is that it implies that the rest of the forest is inedible. Nothing could be further from the truth, at least in Iowa. Upland forest canopies are dominated by oaks and hickories,  with a handful of butternuts mixed in. The midlands are full of mulberries, black cherries and black walnuts. Even the bottomlands, with their thick stands of silver maples and lindens, are full of edible life.

Linden blossoms are delicious in tea, and provide a valuable food source for pollinators.

In most landscapes, I focus on the natural history of the land, and ask what would be here, if we hadn’t cut the trees, grubbed out the roots, and planted corn in the heart of the forest? What is missing from both this particular plot, as well as the surrounding areas? What would increase the native diversity and resilience of the ecosystem?

In a food forest, I narrow that focus to species that 1) are native to the area, and 2) are fairly straightforward for humans to eat. A food forest has a greater concentration of native edible species than you might naturally find in a woodland. Done properly, a guest wouldn’t necessarily notice they were in a food forest; they would simply notice that they were in a beautiful woodland with abundant opportunities for them to forage as they walked. People are so far removed from what is and is not edible without a plastic wrap label and a price tag on it, I’ll probably need to put out signs. There isn’t much point, if people don’t know that the food in the forest is there for them.

A box elder tree comes down to make room for a new black maple tree. We have far more box elder trees on the land than we do black maples, so this will help create balanced diversity over time.

The pocket of sunlight we created this winter will be planted to maples this spring. I am locally sourcing Black Maple from Fleming Nursery and Sugar Maple from Hughes Nursery. Just downhill from the clearing is a large silver maple, well-suited to flooding. Mulberry and black cherry are already growing in the area, and we planted butternuts last year.

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To the Sugar Bush We Go

It was 20 F when we out to tap the maple trees this year, but the wind wasn’t blowing and the snow didn’t start falling until we were wrapping up. When it warms up in a few weeks, it will be too late-the sap will already be flowing.

Otter tracks on Indian Creek. You never know what you will find in the forest until you go into the forest.

We primarily set taps in silver maple trees. All of the native maples, including black, sugar, silver, and box elder, produce sap that can be boiled down into maple syrup. We just happen to have a large amount of floodplain, and a corresponding large amount of silver maple trees.

The small annual hole we bore in the tree does not siphon out enough sap to damage the tree.

We also tap, to a lesser extent, box elders and sugar maples in the uplands. What difference does it make? Silver maple sap typically has between 1.5%-1.75% sugar in it. Black or sugar maple sap typically has between 2-3% sugar. And box elder sap has 1% sugar.To make syrup, we need to boil the box elder sap twice as long as the the sugar maple sap, and the longer it boils, the darker and richer the caramelization. It boils a long time, because we have to take the sugar concentrations from 1.5% sugar (sap) to 66% sugar (maple syrup).

Maple syrup is the first crop I harvest every year, and tapping the trees for it is my own personal act of faith that spring is about to emerge, in the form of sweet flowing sap from the maple trees.

What Comes out of a Community Supported Forest?

Firewood.

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We took out two leaning black cherries. A third cherry was left, because black cherries, while tiny, are quite tasty. Spit the pits out! Cherry pits contain amygdalin.

We took out a half dozen small scruffy elm trees and mulberry trees. Two large red mulberry trees were left to anchor the southern edge of the forest, because mulberries are also quite tasty.

We took out a box elder, nearing the end of its life. All of the trees we cut were about 40 years old, and one was quite hollow in the middle. Check out the mouse cache of bittersweet berries.

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We also removed a variety of impenetrable bittersweet vines, green briar vines, honeysuckle bushes, and blackberry canes. The blackberry canes will come back with a vengeance (as will, regrettably, the others), but we needed a clear space to work in. Underneath that mess, we discovered the old fenceline.IMG_20180117_132737167_HDR

The firewood will be split, allowed to dry for two years, and then used to boil maple sap into maple syrup. It will also be used to heat the pizza oven.