Has anyone else used this "Pennington Ultragreen Plant Starter (with B1)" to encourage rapid and strong root development? It contains vitamin B1 and chelated trace elements iron, manganese, and zinc, which are essential for healthy root development in clone cuttings. A little goes a long way. I've been able to pot clones after 3 weeks with healthy root systems established. I prepare 1 ounce per gallon of water and then water the cloning rooting media (2 parts container mix: 1 part perlite), and then I squeeze out as much water as I can before using to root the cuttings. Don't forget the IBA rooting hormone dip.
These young clones are thriving by the rosemary cuttings, which btw are only a month old themselves.