Natural fertilizer is a type of fertilizer that is derived from natural sources, such as animal waste, compost, and plant matter. GUANO is one of the most common types of natural fertilizer, and it is made from the droppings of seabirds and bats. It is rich in nitrogen, phosphorus, and potassium, which are essential nutrients for healthy plant growth. GUANO has been used as a fertilizer for centuries, and it is still widely used today.