Sigma Seaweed is an all-natural liquid biological product, derived from Ascophyllum nodosum sustainably harvested from cold, pristine waters off the US coast of Maine. Once harvested, the seaweed is air-dried and transported to our manufacturing facility where it undergoes a proprietary, water-based extraction process. ​

Our extraction process is non-destructive, maintaining the integrity and efficacy of all beneficial components.

A versatile concentrated liquid kelp extract derived from Ascophyllum nodosum. The wealth of amino acids, alginic acids, phytohormones, vitamins, minerals, and trace elements are preserved and readily bioavailable in the finished product. A pH of 3.5 keeps micronutrients in solution to prevent the formation of salts that clog spray equipment​.