- The types of crops that the Indus Civilization had was wheat, barley, peas, lentils, linseed, and mustard. Experts say that they might have grown cotton in the summer. They did not grow rice because it didn't grow well where they lived, but they did find white rice and fed it to their animals. The silt that the river brought in when it flooded was the reason why they can grow this many crops. The nutrients that the plants needed was replenished every year when the annual floods came in.