Grass seed is the reproductive part of grass plants, used to grow new grass. It comes in various types, each suited for different climates and purposes, such as lawns, sports fields, or pastures. Grass seeds are typically small and can be spread over soil to establish new growth. When planting grass seed, it's important to prepare the soil properly and choose the right seed type for your location. Factors like sunlight, moisture, and soil quality can affect the success of germination and growth. Proper care, including watering and fertilization, helps ensure a healthy lawn or field.