Hi I'm afraid I can't help you at the moment but yor question got me thinking so I have just ordered some so give me a while and I will let you know how I get on with it.
No idea but I am doing the same - herbs and all of that amazes me. My cupboard is full of herbal teas and have just got some beetroot and orange to try.
I will have to go around a mates place, he has a large mulberry tree in his backyard and scrounge some berries as well leaves. Will have to make sure there'e no silk worms living in them.
I bought some from Amazon yesterday after reading about the benefits od drinking this tea. Would be interested to know how you get on with it if you have bought some. Thanks for replies.