Given plenty of rain, the African sun and warmth favors plant growth, and domestic crops thrive. Staple foods include maize (sweet corn) and other grains such as sorghum and millet. Grains from grasses such as wheat and barley are not widely grown in most of tropical Africa. On the other hand, a number of cash crops are widely grown, notably tobacco, cotton and coffee. In some places these compete with food crops, jeopardizing the food security of rural communities.