... seaweed . specification: powder, flake, solution Seaweed fertilizer (manufactuer)Seaweed fertilizer (powder ,flake) and seaweed fertilizer solutionOur seaweed fertilizer are finely derived from brown seaweed ... and plant growth regulators including nitrogen, phosphate, potassium, calcium, magnesium, microelement (Cu, Fe, Zn, Mn, B), alginic acid, cytokinin, betaine, mannitol ...