... Seaweed fertilizer is extracted from natural swaweed ( kelp, laminaria japonica, kombu). It is rich in polysaccharide, mannitol, iodine ... and adjust plant physiologic function 2. Natural seaweed extract could clearly enhance leaf through-ability and transmission ... (foliar spraying) Application: Tomato, cucumber, fruit plant, cotton, rice, flower, grass, etc. 2. Water flush fertilizer(drip irrigation ...