Unless gathered absolutely fresh, seaweed tends to be sold dried. It is available fresh from May to June. Carrageen, or Irish moss, is used as a vegetarian gelling agent in some processed foods.
Acadian Plant Health’s seaweed extract, Ascophyllum nodosum, is not a fertiliser, because it’s not a direct food for the plant. Instead, it stimulates an increase in the root biomass of a ...