Vermicrop Organics VermiProâ„¢ is a soilless growing medium equipped with extremely high porosity which allows for aggressive feedings. Highly experienced gardeners designed the ultimate ratios of triple-washed coco coir, the highest grade peat moss, aged softwood bark, perlite and mycorrhizal fungi. VermiPro can be used as a stand-alone hydroponic/soilless medium, or combined with nutrients and organic matter to create a custom soil blend. As a stand-alone medium, it is recommended for indoor or greenhouse use only. When mixed with water-retaining organic matter, it creates an excellent outdoor medium.