Humboldt brings you another great nutrient, Natural Grow. Natural Grow is an organically derived blend of soy protein powder, soft rock phosphate, potassium sulfate, organic zinc sulfate, magnesium sulfate, kelp and Alaska Peat extracts. The precise and care put into this complex formula ensures that Natural Grow will promote and facilitate the growth of beneficial bacteria and fungi in your growing media. It also provides essential nutrients to all plants, along with crucial elements ready for "fixation" by the inoculated and existing beneficial bacteria in the soil. Natural Grow is a premium nutrient that will brings new life and vigor to the plants in your grow area. Quantity: 1 Gallon.