You can get different kinds of vegetables when you level up. You can place the veggies in your garden and collect money from it every once in a while. You start at village level 1 with 6 plots of radishes.
Every time you level up your village, you gain more plots to place. For each plant type, you will get an extra 4 plots, in which you can place in your village so that they can grow.
Level 3: Radishes (Gives 20 hearts per radish)
Level 6: Turnips (Gives 50 hearts per turnip)
Level 9: Dofle