Which Color Name Was Introduced To The English Language Via Plant?

Once upon a time in an England far removed from the present, Englishmen were for want of a specific word to describe what we now call “orange”. What we would now casually refer to as orange in color they called yellow-red (geoluhread in Old English). via Pocket http://www.howtogeek.com/trivia/which-color-name-was-introduced-to-the-english-language-via-plant/