Natural & other medicines
I've noticed that the overwhelming majority of herbal teas available on the market are blends. I actually prefer buying herbs in pure form and either drinking them on their own, or blending them myself. But there are a number of herbs that are common ingredients in blends that I find it is hard to purchase in pure form.
I guess it depends really…. On what you’re trying to accomplish with that Cup of Tea. Sometimes you may be aiming to achieve a very specific effect, sometimes you wanna try out single herbs especially if they're new to you