When can I start using Rootbastic?

You can start using Rootbastic when the roots have reached approximately 2 inch in length. The reason a cutting or seedling grows roots to begin with, is because it is in survival mode. It is searching for food. It completely defeats the purpose if nutrients/RBS are added to a cutting/seedling before it has developed a root structure or “a mouth”, if you will. Save it until the plant needs it!