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American Rockwool HortiWool - Advanced Premium Granulated Hydroponic and Horticultural Cultivation
American Rockwool proudly introduces Hortiwool™, a premium granulated rockwool medium engineered specifically for hydroponic cultivation. Through precision engineering and specialized processing of high-grade mineral fibers, Hortiwool™ delivers the perfect balance of water retention and aeration that professional growers demand. Hortiwool™ represents the evolution of hydroponic growing media, offering superior advantages through its unique granular structure. This innovative format provides optimal root zone conditions by maintaining consistent moisture levels while preventing waterlogging - a critical balance for healthy root development and vigorous plant growth. Being chemically inert, pH adaptable, and completely reusable cycle after cycle, Hortiwool™ gives growers complete control over their nutrient programs.
It can be used alone in pots or as an amendment to organic based mixes. Water absorbent granulates can be used as a substitute for peat in media where the peat breaks down rapidly such as in orchids and bromeliad production or in cases where disease transmission in peat is rapid. The addition of water absorbent granulate to peat mixes at 20-50% volume increases water holding capacity and aeration, improving plant growth and shelf life. It is recommended for use alone or mixed with water repellent granulates, depending on the air/water ration required. The water repellent granulates are substituted for aerators such as perlite and styrofoam. Granulated rockwool will not break up under severe soil mixing; the perlite or vermiculite do and it can withstand the heat of sterilization under conditions that melt styrofoam.