| It is native to the same regions as white horehound and is considered an invasive species in some parts of North America. |
| Other herbs that might be used in tea or syrup to treat cough include horehound, sage and thyme. |
| The invasion of weeds such as horehound and stemless thistles is a continuing management problem. |
| Areas once graced by desert mariposa tulip, Rocky Mountain bee plant, prickly poppy and evening primrose were invaded by the hostile horehound. |
| She recommends the use of psyllium for constipation, aloe for jaundice and horehound for cough. |
| The mints are basil, bee balm, horehound, hyssop, lemon balm, marjoram, oregano, peppermint, rosemary, sage, savory, spearmint and thyme. |
