GrowthMax

Natural fertilizer from the sea NPK: 0.3-0.3-4 Kelp has been utilized within agriculture for centuries. GrowthMax™ is a soluble kelp complex derived from a potassium hydroxide extraction process. This refined kelp product provides ocean based compounds that can benefit our plants and soils. Containing nutrients including potassium, this formula can be used as a root drench or as a foliar spray application to bring the ocean into your garden. General Dir..

£25.95