Beyond the greenhouse and interior botanical cells, exterior garden beds and food production areas are fed by the treated effluent from the exterior botanical treatment cells. This effluent is rich in plant-available nutrients and can support vigorous growth in ornamental and edible landscape plantings. Fruit trees, berry shrubs, perennial vegetables, and annual garden beds all benefit from this resource.

Permaculture-inspired design principles — placing productive plants in zones according to their maintenance needs, creating guilds of mutually supportive species, emphasizing perennial over annual plantings for long-term productivity with minimal inputs — are well-suited to the exterior growing systems of a regenerative building. A food forest — a multi-layered productive landscape designed to mimic the structure of a natural forest with canopy fruit trees, understory nuts and berries, ground-level herbs and vegetables, and root crops — can provide substantial food production from a given area with minimal ongoing labor once established.

Review Questions

1. How do the food production and passive solar heating functions of a greenhouse reinforce each other? Are there any tensions between these two functions that must be managed in the design?

2. What makes interior botanical cells productive food growing spaces in addition to waste treatment zones? What types of plants are best suited to them?

3. Describe how an aquaponics system works. What are the inputs, outputs, and the biological processes that connect fish cultivation to plant growing?

4. What is the “greens and browns” balance in composting? Give examples of each category from the waste streams of a typical household.

5. What is a food forest, and what design principles does it employ to achieve high productivity with low ongoing labor?