Got pretty far, but decided against finishing up for various reasons. The main thing that's missing is more crops (and maybe seasons).

I was going to try to fit it into the theme, but like I said, I decided not to completely finish. :P

I probably didn't even spent a little less than 10 hours on the game, because I was out of town.

Controls:
Mouse wheel or Up/Down arrows change the selected tool.
Left clicking uses the current tool, right clicking sells plants (if they are grown).
O decreases the time rate, P increases it. L sets it to the default.

It really isn't that accurate. It's just a quick clone off of Harvest Moon (minus characters... and everything else).