An unusual plant with distinctive reddish – purple oblong “knobs”. Looks good with Dark Mullein. Liked by butterflys. The root is used in Chinise medicine it said to stop bloody dysentery, nosebleeds, and is applied topically to treat burns and insect bites.
Often this species needs to be planted just before the frost or needs a long period of cold for Stratification, so its seed dormancy can be overcome.