I would like very for sure a 3hr crop (or a new farm upgrade), but make it give about 750 food because if that would be the amount after planting, it may probably be the best crop ever released. It would be able to be planted 8 times a day. In fact, since you have 7 farms, you'd receive 5,250 food at each harvest, and if you plant the fastest (without speeding up with gold obviously), you'd get 42,000 food! Please TL!
P.S. And please TL give it a good cost, not 200K, not 800K, AND NOT 1M! About 80k - 100k sounds good. But to be fair, it should be unlocked at a great level such as 30 or 40.