In the global pursuit of sustainable agriculture, farmers and formulators are searching for an edge—a way to produce healthier, higher-yielding crops with a lighter environmental footprint. The answer may lie deep beneath the waves, in the powerful, nutrient-rich currents off the coast of Southern Africa. Here grows Ecklonia maxima, a species of giant kelp that scientific research is confirming as a game-changer for modern farming. While the use of seaweed in agriculture is a
