Hiya!
I've been in and out of PZ and the forums over the years, so I do apologize if this is a topic that has been brought up before now. I love the game, and, obviously, farming is important in the long run. Based on the setting of Kentucky, being pretty similar to my home in Ohio, USA, I have a few suggestions on additional veggies that should be available for farmers, simply based on how common and easy they are around here. In my opinion, we should also be able to grow onions, lettuce, corn, and zucchini, at the very least; and also eggplant and bell pepper, really.
Also, it would be awesome if we could plant orchards of fruit trees and grow apples and cherries, which are pretty common and easy to grow here. :)