My only complaint with the gems/ for cash is that these real money cash purchases are made in the same ''store'' where virtual purchases are made. I think this could lead to big problems.

This game must be attractive to children too. I am certain that some are not able to distinguish between these 2 very different types of purchasing.

On a side note, I find it a bit too easy to purchase the wrong crop just by scrolling over incorrectly.
nice game.... May need a few tweaks. Thanks.