I would contact your Secretary of State. They should have a list of resources that can explain exactly what types of licenses or permits are required for you to operate this type of business. I would also contact your states Dept of Agriculture to see if they have any requirements for how these herbs are grown, harvested, packaged and shipped. The fines for doing it wrong could be substantial.Good Luck.
I don t think there is any activity left in this world for which you do not need a permit to participate in...