Many applicants already own/run greenhouses, and I have worked with commercial greenhouses and tree nurseries in the past. Updating them to meet security requirements would much easier and cheaper than starting from scratch at an indoor location IMO.
There is a cucumber farmer in Airdrie that had gotten though all the HC hoops without requiring major expensive modifications to his greenhouse in order to meet security requirements. Unfortunately, despite getting the go-ahead from HC, the local municipality screwed him on a last-minute zoning bylaw amendment.
Have you any additional info on such a greenhouse? Because I'm with oddjob on this one. The regulations require a "building within a building", and that's strictly for security, not controlled environments or anything. That really doesn't leave much option for a greenhouse, unless you're taking serious liberty with what can be construed as a "building".
BTW, I will sign up to the first LP that calls themselves Soylent Green, because it's the fucking truth.