To grow groundnuts, you'll need to start by preparing the soil with a mix of compost and well-rotted manure, and then sow the seeds about 2-3 inches deep and 6-8 inches apart. The best time to plant groundnuts is during the warm season, usually from May to July, when the temperature is around 20-30 degrees Celsius. In areas with a dry climate, it's best to plant in May, while in areas with a humid climate, June or July might be more suitable. Make sure the soil is well-drained and receives full sun, and keep the soil consistently moist during the first few weeks after planting.