>That's been an issue for people growing medical marijuana in California for a while not. DEA comes busting in, destroys your crop, arrests you, which will then be dropped because you have the required state and federal certificates posted, but you're still out all the money you dropped into that crop. Considering the costs of water, electricity, etc to grow marijuana 'legally', it's barely worth it and apparently you just can't grow it outside.

Evolution seems to take subway or other strange ways nowadays. I've always imagined plants as growing outside better than inside.

Unless you mean industrial level growing, as a business, with certain yield and profitability level. Then that's not nature, that's industry.

And, cost of water in WA should be about zero, if you just hold some rainwater in reserve. From what I hear, it's completely different from Texas - your cost of water may come from investment i drainage :).