VermaPlex Black Sea Kelp Black Sea Kelp provides nutrition in the form of a balanced blend of sea plant derived nutrients including: amino acids, humic acid, colloidal minerals and sea kelp extracts. Amino acids feed plants directly but more importantly, they feed beneficial microbes. Contains natural rooting hormones that improve root length, root mass and the efficiency of the root system. Black Sea Kelp stimulates root growth and beneficial microbe activity allowing plants to absorb nutrients more efficiently. It is long lasting, reducing the need for repeated applications, making Black Sea Kelp very cost-effective. 100% organic materials that are derived from sustainably-farmed seaweed.