Answer: It seems that you know quite a bit! There are 300 species of Verbascum, some annual, biennial, perennial and small shrubs. It's also found in Europe, Africa, Asia, Australia.
In some places, mullein is considered a weed because it can be invasive. It grows in well-drained, dry soil in full sun and self-sows easily.
The flowers have been used to treat various respiratory problems since Classical times (coughs, congestion, and
tuberculosis), but there haven't been many research studies on its effectiveness. Verbascum is the Latin name that Pliny gave the plant. You can find more information on the medicinal uses in the book 'Rodale's Illustrated Encyclopedia of Herbs', ISBN# 0-87857-699-1. Good luck with your research!
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