Harvesting the potential of seaweed Our seaweed extract is manufactured using sustainably harvested Ascophyllum nodosum, a slow-growing, large, brown macroalgae found in the sheltered, rocky shores and pristine waters of the Irish North Atlantic coast. Having sourced the highest quality raw material, we undertake an extraction process which employs just the right level of heat and pressure to extract the maximum available bioactive components. Our process does not involve chemically assisted hydrolysis which is so common in the seaweed extract industry. Our natural seaweed extract is carefully manufactured in order to produce the highest level of biostimulant activity possible. As a result of our carefully chosen harvesting and extraction methods, AlgaFlex is a highly complex combination of trace elements, carbohydrates and amino acids. It is a pure seaweed extract with no added fertilisers and is approved for use in organic growing systems through the Soil Association and Organic Farmers and Growers.