And the lessons are? Let me guess. Too much time needed for investment return. Perfectly shaped symmetrical vegetables: Probably not in this conditions, becau

And the lessons are? Let me guess. Too much time needed for investment return. Perfectly shaped symmetrical vegetables: Probably not in this conditions, because Auxins. Shadow can slow your crop, Vertical spaces produce and receive shadow all the time Agriculture is messy and often smelly. Plants can't grow without lots of s*t. To harvest tomatoes in the wall of a skyscraper is difficult, expensive and often even dangerous. Debris still must be removed. Birds still must be deterred. Snails don't have any problem with climbing...