What is the best farming method to get maximum profit in Farmville?

you get more coins per crop the higher up you go, and also the longer they grow (2 days, 3 days are going to give you more money than the one day gs or the 4 hour blueberries). But it's good to have the experience points you get from turning over the ground more often. I plant a variety, not all the same thing. Get some melons growing there, and you will get a return on your investment, but save some space for the berries too. Eggplant is about the best, because you can get to be a "master" on all 3 levels without too much time/plants, and then you will get coins and XP (experience points) galore every time you master all 3 levels of a crop. When you scroll over the seed boxes in the market pages, you can see how many more you need to go in each one to master the next level.