I've been attempting to get through this game for about 2 weeks now, and the closest I've got is still needing 300 crops.
The power-up is a waste of time, and my precious beans. What I need is about 20 colour-catchers (dogs) and tractors, but as I'm playing this game on King (old version) the rewards are pathetic.
I'm hoping the required crops will change, or failing that, the new version of the game will be installed. Now, with that game, the rewards are worth having, and saving for a game like this.
At present I play via Facebook (new version) and King (old game), and I can't play either now because of 'shrunkenscreengate'