There is a big difference in varieties of wheat, also in the way wheat is grown. Generally speaking, the best variety for bread making and general use is called Hard Red Winter wheat. It is golden brown at harvest. The kernals are hard and dense. There are also soft red, hard white and soft white varieties.
Most wheat is grown through the application of commercial fertilizers.
It is sold both for food, for animal feed and for export. Organic wheat is grown by specialized farmers. Such wheat is grown without use of refined chemical fertilizers, pesticides or other chemicals. It is fertilized with manures and other natural fertilizers, which make organically grown wheat more expensive. Many people believe that organically grown wheat is the perfect all around food for survival, because of its high nutrition value.