Double Duty

Adding a fermentation enterprise inside a greenhouse provides CO2 in abundance for growing vegetation. Instead of spending money on CO2 generators (which is widely practiced), generate CO2 and generate money from a beer or wine enterprise.

The waste products of fermentation is a feedstock of the greenhouse production. This is a prime example of "edge effect" and is taught heavily in the permaculture discipline.

This puts a new spin on the term "Beer Garden". Who wouldn't want to quaff some brews at night listening to a really good band inside a thriving greenhouse?