Once such method, called "Three Sisters," involves growing corn until it reaches about a foot tall, then adding pole beans to grow up the stalks like a trellis, allowing the beans return nitrogen to the soil.
Spinney spoke of specifically about one method she teachers her 9th graders. The article says, “They dig a large hole several feet deep, toss in logs and sticks, then add soil to form the basis of a garden bed. Like peat moss, locally sourced logs absorb and hold water, gradually breaking down to add fibre and nutrients to the soil.”
- Nature and Environment