nettle-leaf giant hyssop vs spotted bee balm

nettle-leaf giant hyssop

noun
  • An aromatic herb of the western US in the mint family (Agastache urticifolia), used medicinally by the American Indians. 

spotted bee balm

noun
  • Monarda fruticulosa 

  • Monarda punctata, found in Quebec, Ontario, eastern and south-central United States, California, and northeastern Mexico. 

How often have the words nettle-leaf giant hyssop and spotted bee balm occurred in a corpus of books? (source: Google Ngram Viewer )