Groundnuts sometimes require a minimum of 100 to one hundred fifty days from planting to maturity, depending on the variety planted. Flowering continues over a long period and pods are in all stages of development at harvest. When the plant has matured and the peanuts are ready for harvest, the farmer waits till the soil isn't too wet or too dry before digging. Groundnuts grow best in sandy soil with less than 15% clay. The most effective time to plant is from early November to no later than twenty five November.