What happens next?

How to become an herbalist
Culture an interest in herbalism.
It is not impossible to begin training in herbal studies without prerequisites, but a basic understanding of herbs and other botanical systems will allow a helping hand through your future. If you are still in high school, pay attention to your biology classes.
Likewise, an interest in other aspects of science and a love of the outdoor environment are wise paths to travel before engaging in this career path. Obtain recognized training as an herbalist.