Plagron Growmix without Perlite 50 LPlagron Growmix without perlite is an ideal alternative for growers looking for a high performance substrate with a more compact texture and no added components like perlite. Made from premium peat and enriched with Plagron worm castings, this substrate offers a fertile, aerated environment with excellent water retention capacity, perfect for healthy and vigorous root development. Worm castings not only improve soil structure but also provide