A liquid kelp formulation includes an enzyme inactivating component and a preservative to extend the shelf life of the formulation in terms of growth hormones. The formulation can also include a fertilizing additive, and a surfactant. A system is also provided whereby the kelp is maintained in solid form, and dissolved in water just prior to use. The solid form kelp and/or water can include additives, or additives in separate form, if used, can be added to either the kelp or the kelp solution.
