Nice as a prototype of your farming actions, they work well. The watering and digging auto-targeting is very nice. I agree harvesting needs to work the same way.
I am a bit unsure about having fixed areas for different plants and having the planting be fixed according to that - in a larger game I think the strategy / flexibility of choosing your crops is pretty important to users.
I also think with the nice way you've set up the auto-targeting, planting blocks should be 3x3? Maybe that's just what I'm used to from other games but it feels like a waste standing in 1 spot, and only digging/watering 6 places