Some Organic Lawn Fertilizers
There are many natural products, that have been used as natural lawn fertilizers. They include seaweed extract, manure, and compost. Others are crab shells and fish emulsion. Fish emulsion is very popular, as it is made from parts of fish, a rich source of trace elements needed for the healthy growth of plants.
Apart from adding nutrients to the soil, crab shells are also useful in pest control. Seaweed extract helps in the growth of plants, and triggers blooming too. They contain more than 60 nutrients and many amino acids.