The Fields
           
Ah, dirt.

There are 3 fields on the farm, small, medium, and large. As are the nutrients.
Small is for tree seeds, the other two are for the crops.

Seeds:
Melon: summer-fall
Tomato: spring-fall
Potato: winter-spring
Turnip: summer-winter
Watermelon: spring-summer
Sweet Potato: fall
Carrot: fall-winter
Strawberry: fall-spring

Apple, Peach, Grape, Banana, and Orange are all tree seeds.

Planting
To plant, go to the designated field, take out the seed, and press "A".

Harvesting:
Tomatoes, Melons, Watermelons, and Strawberries are really bright when they are ripe. Carrots, Potatoes, Sweet potatoes, and Turnips lose their flower when ready. The trees will grow huge fruit.
Pluck the crops and shake the trees.