Mr. Solomon advocates super wide spacing in order to make plants drought tolerant (like 10ft diameter for tomatoes). But he writes about "dry gardening" methods as opposed to raised beds. Why could this not be done in raised beds?
For instance, I imagine that if i planted one tomato plant per 4X4 raised bed, with 4ft wide rows, then would each plant have 4x4 feet to grow in or 8X8 ft as it occupies the space underneath the paths?
I like the idea of dry gardening because zero irrigation is much more sustainable and the plants are tastier and more nutritious. However, on my property, in PNW Washington, the soil has too much clay and drains poorly so we have to plant in tall beds to improve drainage. Should i give up on dry gardening? Or is it compatible with raised beds?