How to Care for a Horehound Plant


Horehound (Marrubium vulgare) is a perennial herb that belongs to the mint family. Horehound plants are drought-tolerant and hardy down to minus 25 degrees Fahrenheit, thriving in full sunlight and well-draining soils. Horehound plants are often grown for making teas, candies and cough drops from their leaves and flowers. The horehound's blossoms and foliage contain many major vitamins, including essential fatty acids, potassium and iron. Horehound herbs are easy to grow and harvest, growing best during the warmer spring and summer months.

Step 1

Water your horehound plant moderately once per week during summer, only when the soil dries out slightly. Don't allow the horehound plant sit in soggy or waterlogged soil.

Step 2

Feed your horehound plant with an all-purpose garden fertilizer in early spring, according to the recommended dosage on the label. Apply another dose of a liquid nitrogen fertilizer after the harvest.

Step 3

Cut off the horehound plant's flowers before they produce seeds to prevent the plant from spreading invasively. Shallowly hoe around the horehound plants to control weeds.

Step 4

Harvest the horehound's leaves by picking them off the plant, removing only one-third of the leaves during the first year. After the first year, harvest the leaves and flowers at the peak of blooming. Tie the leaves and flowers together, and hang the bundle indoors in a shaded place to dry.

Tips and Warnings

  • Be sure to store the harvested horehound flowers and leaves properly. Chop up the dried leaves and flowers, and then store them in an airtight jar or plastic container in a dry place that's away from direct sunlight. Use the harvested horehound within one year.

Things You'll Need

  • Garden hose
  • All-purpose garden fertilizer
  • Liquid nitrogen fertilizer
  • Scissors
  • Hoe
  • Twine or string
  • Knife
  • Airtight container
  • Organic mulch


  • Utah State University Cooperative Extension: Horehound in the Garden

Who Can Help

  • Mother Nature: Horehound
Keywords: horehound plant care, grow Marrubium vulgare, growing horehound herbs

About this Author

Sarah Terry brings 10 years of experience writing novels, business-to-business newsletters, and a plethora of how-to articles. Terry has written articles and publications for a wide range of markets and subject matters, including Medicine & Health, Eli Financial, Dartnell Publications and Eli Journals.