No. Some crops can grow IN crops, such as with the use of nurse crops, or purposely mixing two different types of crops (like barley with oats) in one field, mainly for the purpose of growing...
farmers
People grow crops either to earn money or to eat. People grow cotton to sell and potatos to eat.
In the best place available to them.
corn
Growing Crops without Soil and Fertilizers
How to Grow Edamame
Harvesting Crops Year Round
Benefits of Growing Desert Crops