How plants produce aromatic compounds — and why that shapes how we use them.
Attract pollinators
The floral scent of rose, jasmine, and ylang ylang evolved to attract bees, butterflies, and other pollinators. When we use these oils for their aromatic qualities, we are experiencing biology at work.
Deter herbivores
Menthol in peppermint, carvacrol in oregano, and thymol in thyme are all natural deterrents that make leaves unpalatable to insects and animals.
Protect against environmental stress
Frankincense, myrrh, and copaiba produce thick aromatic resins that seal wounds in bark and protect against infection and environmental damage.
Communicate with other plants
Some plants release volatile compounds into the air when stressed or damaged — signalling neighbouring plants to begin producing their own defensive compounds.
Oil glands
Found on the surface of leaves and petals in plants like lavender, peppermint, and rosemary. These microscopic sacs store concentrated aromatic compounds and release them when the plant is touched or disturbed.
Glandular trichomes
Tiny hair-like structures on the surface of leaves that contain and release volatile compounds. Common in herbs of the Lamiaceae family — mint, basil, thyme, oregano.
Resin ducts
Channels running through bark, wood, and roots of trees like frankincense, myrrh, and cedarwood. Resins produced here are protective secretions that the plant releases when injured.
The same species grown in different conditions produces different chemistry — and a different oil. Altitude, soil composition, climate, rainfall, and the timing of harvest all affect the chemical profile of the plant. This is why lavender grown in the high-altitude regions of Bulgaria produces a different oil than lavender grown at lower elevations — the plant's chemistry responds to its environment. It is also why doTERRA sources from native regions rather than commercial farms: the plant produces its most complete chemistry where it has evolved to grow.