Board Thread:Questions and Answers/@comment-24546951-20140611195702/@comment-70.79.22.172-20140611232912

Micro Agriculture Development Buliding in Bloons Monkey City (A.K.A. BMC) will make you be able to use Banana farms in-game. Although Banana farms seem useless in this game, since the Bananas are worth $30, you can buy them, and then sell them like 3 rounds later to make a profit. Once you get into late game however, it may be worth it to instead keep them, because you can make easy profit quickly.