susun weed (of "wise woman" tradition)says she only takes them separately--as infusions.
Is there any reason in your view- not to mix, say, oatstraw and nettle?
It just seemed to me, intuitively, to be a good thing.
oh--PSthese four are her favorites, esp. for wmen--also, I recognize that she feels it's good to get to know one plant at a time...there's wisdom in that, for certain.