Good soil preparation is key to a successful winter garden. Remove old roots, dry stems, and weeds from previous crops. Loosen the soil to a depth of 8–10 inches and mix in well-rotted cow dung manure or compost. For container gardening, use a mix of garden soil, compost, and sand or cocopeat, ensuring proper drainage. Choose a sunny spot with 4–6 hours of sunlight daily, as winter sun is weaker.