We've always gone to Mountain Rose, where everything is certified organic and we've found the quality to be better and more consistant than Frontier.

Since it is on the west coast, the local herbalists in our area (Maine, NH, Vermont) are starting to group together this year to grow for each other, thus lessening our carbon footprint.

Here is a link that might be useful: Mountain Rose Herbs

check out Frontiercoop.com They typically sell wholesale to health food stores and other businesses.

They have been around for several decades and have a high standard of quality. they sell both organic and non organic herbs.