Aromatic Companion Plants

Aromatic Companion Plants

Aromatic companion plants are excellent workers in the garden. They not only provide medicine and fragrance for the herbalist and aromatherapist, but they help to protect some of the other herbs and vegetables in the garden. Think of them like natural bug and predator repellants with fringe benefits. Some aromatic plants have their own aromatic defense systems too but in this article we will take a quick look at some of the types of aromatic companion plants which help each other out.

Types of Aromatic Companion Plants

Plant species which are good aromatic companions to other plants include:

  • Basil (Ocimum basilicum): Potatoes, tomatoes, and lettuce. Herb companions include oregano (Oregano officinalis) and calendula (Calendula officinalis).
  • Borage (Borago officinalis): Strawberries, cabbage, and tomatoes. Also see Borage in the Aromatic Garden.
  • Roman chamomile (Chamaemelum nobile): Long known as the “plant’s physician,” chamomile helps sick plants in the garden recover. [1]
  • Dill (Anethum graveolens): Broccoli, cucumber, and cabbage.
  • Sweet marjoram (Origanum majorana): Celery, peas, and onions. Herb companions include lavender (Lavandula angustifolia), rosemary (Salvia rosmarinus), and thyme (Thymus vulgaris).
  • Mint (Mentha spp.): Beans, carrots, and corn. Herb companions include rose (Rosa spp.).
  • Rosemary (Salvia rosmarinus): Peppers, cabbage, and tomatoes. Herb companions include sage (Salvia officinalis), fennel (Foeniculum vulgare), and lavender (Lavandula angustifolia).

Other Aromatic Plant Tips for the Garden

If you don’t have a lot of space to grow aromatic companion plants in your garden, here are few ways in which you can use essential oils and hydrosols in your garden, or place pot plants, to naturally protect your plants:

  • Keep peppermint (Mentha piperita) hydrosol or essential oil on hand to deter ants from invading your home. Spray or drop around doorways and windows. Keep pets away from the area until dry.
  • Plant geranium (Pelargonium spp.) in pots and place near seating areas. Geranium helps to deter mosquitoes (and smells way better than citronella!).
  • Sage (Salvia offficinalis) is another fragrant plant/aroma which helps to deters mosquitoes as well as flies.

Learn More About Aromatic Plants

If you love aromatic plants and would like to learn more about them, and the essential oils which are extracted from them, check out our Botanical Aromatherapy(TM) School. Annual membership is available at several levels and includes aromatherapy recipes and blends, eclasses and electures, cheat sheets, materia medica, and more. To learn more, visit Botanical Aromatherapy School.


  1. Transition Farm. Chamomile – The Plant’s Physician. 11/09/11. Accessed from: 
  2. Author’s own experience.

About the Author

The author of this article has been working in the health care industry since the 1990’s and in the aromatherapy industry since the 2000’s. She is a UK-certified aromatherapist, a NAHA Certified Professional Aromatherapist®, a gardener, and a certified herbalist with several years of study. She is also a botanical perfumer.

Sharon is both a published author and editor in aromatherapy, a consultant, and custom blend formulator. She is the author of Authentic Aromatherapy and the current chief editor of the NAHA Aromatherapy Journal. Sharon works from her garden studio in Sedona, Arizona, where she gardens and distills plants from her own aromatic gardens, surrounded by natural fauna and flora on an original pioneer homestead property.

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