I researched farming and when I went to build one in my starting town it was not listed. Not saying it was greyed out but was not even on the list. My city was located in the starting position which is right next to fertile land so I see no reason why it shouldn't be listed. My town consistented of 1 workshop, 1 watchtower, 2 gardens, 1 lumber yard and 2 huts. Lumber yard was in progress when farming was researched.
