Pro-Mix BX Mycorrhizae Soil – High-Performance Growing Medium for Vigorous Plants

Pro-Mix BX is a premium, general-purpose growing medium that expands from a 3.8 cu. ft. compressed bale to over 6.5 cu. ft. of loose, well-balanced soil—ideal for a wide range of plants. Trusted by growers for years, it's our go-to mix for consistent performance, healthy root development, and optimal moisture retention.