One of the best organic fertilizers you can use in your garden is Seaweed. Fertilizer. Seaweed has 60 trace minerals and ready-to-use nutrients including nitrogen, potassium, phosphate, and magnesium. It also contains hormones to encourage plant growth.
Seaweed has more than 70 minerals, vitamins and enzymes. Here are just a handful of its many benefits and uses:
Liquid seaweed solution promotes additional budding if applied as the plants are beginning to bud.
It extends the shelf life of fruits and vegetables if applied 10 days before harvesting.
The extract lengthens the life of cut flowers if they are sprayed with it a day or two before cutting.
It can also be used as a rooting solution. Place cuttings in a solution of liquid seaweed and water until roots develop, then plant. When planting seeds or transplanting, water with the solution.