flowering tea vs herbal tea

flowering tea

noun
  • A type of tea originating in China consisting of a bundle of dried tea leaves wrapped around one or more dried flowers. 

herbal tea

noun
  • A beverage made by infusing the leaves of various herbs, generally not including true tea (Camellia sinensis). 

How often have the words flowering tea and herbal tea occurred in a corpus of books? (source: Google Ngram Viewer )