CoCo Coir Professional grade growing medium. Coco Coir is a 100% Coco RHP certified for horticulture growing medium made from coconut fiber. Here at CharCoir we believe in delivering only the best quality products. We source our coco pith from a single source farm and can offer a chemical analysis with every fresh batch made to order. Coco Coir has received RHP certification from Holland. This assures our customers that coco coir is made using the highest standards in the industry. Enjoy!