Growing for the highest yield. The advantages of Royalmix: ● Six weeks organic pre-fertilization. Royalmix contains sufficient organic nutrients for the first six weeks of your cultivation. Because Royalmix is richly fertilized, it is not suitable for very young plants. ● Improves root development and drainage. Royalmix consists of carefully selected peat varieties and a high percentage of perlite, which results in a high oxygen level and high airiness. ● Suitable for organic growing. Royalmix is certified by Control Union, which means that this substrate is suitable for organic cultivation and is good for people, animals and the environment.