Yes. Make farming more personal stefan, and don't make it so you have to water every like 10 seconds.
Make it so trees could take 2 REAL days to grow or more, but you could come online on graal at different intervals to water them and you really own the trees yes.
And once you get the apples (which would get you more money of course) if you keep watering the tree it will keep you going. You could hire farm hands and add their accounts and pay them a percentage of your earnings from the apples you get when your land gets bigger and your farm bigger etc.