Metrop Calgreen is a high-quality, best fertilizer for lawns . It is highly effective for regenerating lawns. Its low phosphorus content makes it suitable for use in areas where phosphorus fertilizers are prohibited. However, it has a high nitrogen content, which can scorch the blades of grass and stunt the growth of roots. For this reason, it is best used for newly-laid sod and established lawns. For best results, mix the fertilizer with water a...