Neptune's Harvest Seaweed Plant Food contains Ascophyllum Nodosum, an aquatic plant that grows on the floor of the North Atlantic Ocean. This seaweed provides your plants with over 60 naturally occurring nutrients. Growth-promoting substances like auxins, cytokinins, and gibberellins enhance plant development, color, and vigor. Choose your desired container size below. Use this all-natural fertilizer on your plants in alternate feedings. Studies show that seaweed improves plant hardiness and resistance to adverse environmental conditions. These adverse conditions include early frost, extreme heat, and lack of moisture. It increases and accelerates germination when used as a seed inoculant. It also encourages the rapid development of a healthy root system. We recommend combining this product with Neptune's Harvest Fish Fertilizer for maximum efficiency. Gardeners trust in Neptune's Harvest products for their proven results. All their fertilizers and amendments are OMRI-listed for use in organic gardening.