There is the possibility of setting up a Hydroponic growing system with spectrum lighting,In this you could grow just about any Vegetable,plant,etc. in a very short amount of time.I think Cost would be the deciding factor though,I understand it is quite expensive,To start up initially,but once you've figured out what you need,the cost is no longer,an issue!I have eaten Tomatoes,Radishes,Swiss Chard- a friend grew,last year,All 3 were delicious,& I couldn't taste any chemicals,Whatsoever!His greenhouse is about 6'Dx6'Wx8'-high