Simple, just plant ur crops as a format of 3x4x3 like a oval shape as close as possible.
U can change ur graphic setting to Optimal (LOL) to see whether the crop u are planting can be plant on ground that is too close to other installed crops or not.
For HARVESTING, just stand still in the middle of the farm and SPAM R while changing ur view angle. =)
Also, u can breed crops with "F5". So, if you do breed+harvest. Just breed until u got 10seeds and SPAM DA R AGAIN.
Lastly, please like this post.