The only ways you can make farmville cash are to go up levels, buy it, or complete the offers that offer you extra farmville cash.

If you do not want to pay for your farmville cash then you can either complete offers/surveys or try to level up allot really quickly. If you go for the level up quickly option then it will take a long time for you to get your desired amount fast, especially when you want to try and buy some of the limited time only offers.I have submitted another article hat will show you how to level up quickly in farmville, this could help you if you go for that option.

Another option is to buy farmville cash which is the easiest possible way but it takes the fun out of trying to earn the cash you make.

the third way is to complete surveys or offers which will reward you with farmville cash, some offers will reward different amounts than others.