Cannabis terpenes are the aromatic compounds that make one strain smell like lemon peel and another like pine needles or black pepper. They shape flavor too, and many people use them to tell strains apart. This guide explains what terpenes are, where they form, how they differ from cannabinoids, what research does and doesn't show about their effects, and how to use terpene information when you shop.
What are terpenes?
Terpenes are a huge family of natural compounds that plants make for jobs such as defense: some repel insects, and others attract the predators of plant pests. Together with their close chemical relatives, they form the biggest single group of plant chemicals, and many are familiar from the kitchen and the perfume counter: the zing of citrus peel, the bite of black pepper, the floral smell of lavender.
In cannabis, terpenes, not cannabinoids, are responsible for the plant's aroma. More than 200 have been reported in the plant, though a few, such as limonene, myrcene and pinene, usually predominate. Strictly speaking, many of these aroma compounds are terpenoids, chemically modified terpenes, but most people use the two words interchangeably.
Where terpenes form: the trichomes
Terpenes are made in the same place as cannabinoids: the trichomes, tiny resin glands that cover the flowers and give them a frosty look. Inside each gland, secretory cells build both cannabinoids and terpenes and store them in the sticky resin.
Many terpenes are volatile, which means they evaporate easily. The lighter ones fade during drying and storage, which is why fresh-frozen products like live resin and rosin aim to keep more of the plant's aroma. Heat and light speed that loss, so keep flower in a cool, dark, airtight container.
Genetics set a strain's terpene potential, but growing conditions and the way the flower is dried and cured also shape the final profile. That's why the same strain can smell a little different from one batch to the next.
Terpenes vs. cannabinoids vs. flavonoids
Cannabis makes three groups of compounds that people talk about most:
| Terpenes | Cannabinoids | Flavonoids | |
|---|---|---|---|
| What they are | Aromatic compounds | Compounds linked to the endocannabinoid system | Pigments and protective compounds |
| What you notice | Aroma and taste | Effects, such as the high from THC | Some flavor and color |
| Found elsewhere? | Yes, in many plants and foods | Mostly unique to cannabis | Yes, in fruits, vegetables and teas |
| Studied in people? | Very little | THC and CBD, extensively | Very little |
Flavonoids give many fruits and flowers their color. Cannabis makes a few of its own, called cannflavins, which add to its flavor, and research on them is early.
The entourage idea: what's proposed and what's shown
The entourage effect is the idea that cannabis compounds work better together than alone. The term dates to 1998, when researchers used it to describe how otherwise inactive compounds in the body boosted the activity of its own cannabinoids. It was later stretched to the whole plant, with the suggestion that terpenes and minor cannabinoids shape how THC feels. Our entourage effect explainer goes deeper.
What's proposed: terpenes might change how THC feels, for better or worse, which might be part of the reason strains with matching THC numbers can feel unlike each other.
What's shown so far:
- In a 2019 lab study, six terpenes common in cannabis didn't activate the CB1 or CB2 receptors and didn't change how THC acted at them. If an entourage effect exists, the authors concluded, it doesn't happen at those receptors.
- In a 2024 study of 20 adults, vaporized limonene taken with THC lowered ratings of anxiety and paranoia compared with THC alone, but only at the highest limonene dose, in a session just 12 participants completed. Limonene by itself produced effects no different from a placebo.
- In a 2025 study of 19 adults, inhaled pinene didn't reduce the memory effects of THC, as the researchers had hypothesized it might.
Even the researchers who coined the term were careful. A year later, they called the belief that plants can be better drugs than the compounds isolated from them "widely held (but not experimentally based)." The honest summary: an interesting idea with a few early clues and plenty still to test.
Do terpenes decide indica vs. sativa?
Not in any reliable way. Indica, sativa and hybrid are the labels you'll see on store shelves, but they aren't a standardized or regulated naming system. A 2022 study comparing labels with the terpene profiles of about 43,000 flower samples from six states found that the indica, hybrid and sativa labels don't reliably distinguish samples by their chemical content.
The researchers grouped samples by their actual chemistry instead, and terpenes were a big part of that picture. One pattern lined up loosely with the labels: strains high in terpinolene were more often sold as sativa. Otherwise, the categories were thoroughly mixed. For a preview of a strain's smell and taste, its terpene profile tells you more than its label.
Do terpenes get you high?
Not in the way THC does. THC's high runs through the CB1 receptor, and in the 2019 lab study the most common cannabis terpenes didn't activate it. They're also part of daily life: you meet limonene in an orange and caryophyllene in a pepper grinder without any high.
Where terpenes may matter is in shaping how THC feels. The 2024 limonene study is one early sign of that, but it was small and used vaporized limonene, and it needs to be repeated before anyone draws firm conclusions.
The most common cannabis terpenes
In the 2022 study of U.S. lab data, myrcene, beta-caryophyllene and limonene were present at the highest levels on average. Here's a terpene chart of the ones you're most likely to see:
| Terpene | Aroma | Taste | Also found in |
|---|---|---|---|
| Myrcene | Earthy, musky, a little fruity | Mildly sweet, herbal | Hops and many aromatic plants |
| Beta-caryophyllene | Peppery, woody | Warm, peppery | Black pepper and many other plants |
| Limonene | Bright citrus | Sweet, citrusy | Lemons and other citrus |
| Alpha- and beta-pinene | Piney, resinous, woody | Sharp, woody | Conifers and most other plants |
| Linalool | Floral, lavender | Lightly spicy, floral | Lavender |
| Humulene | Earthy, woody | Bitter, hoppy | Hops |
| Terpinolene | Floral, herbal, citrus | Mild, slightly bitter | Essential oils of many plants |
| Ocimene | Sweet, herbal, woody | Subtle, slightly fruity | Leaves and flowers of many plants |
The aroma and taste notes follow published sensory descriptions of each terpene. They describe smell and flavor, not effects.
Short profiles
Myrcene. Often the most abundant terpene in modern cannabis, with an earthy, musky aroma it shares with hops. It's the terpene most often linked to heavier-feeling strains, though that link hasn't been proven. More in our myrcene guide.
Beta-caryophyllene. Generally the most common of the larger terpenes in cannabis, with the bite of black pepper. It's the subject of a lab debate: an earlier study found it activates the CB2 receptor, while the 2019 study couldn't detect that effect. See our caryophyllene guide.
Limonene. Bright citrus, as in lemon and orange zest. It's also the terpene in the 2024 study above. Read our limonene guide.
Pinene. The most widely encountered terpene in nature, and part of the sharp scent of conifers. Our pinene guide covers the alpha and beta forms.
Linalool. The floral note of lavender. Learn more in our linalool guide.
Humulene. An earthy, woody terpene shared with hops, often found alongside caryophyllene.
Terpinolene. Floral, herbal and citrusy. It's less common overall but leads the profile in some strains, which are more often sold as sativa.
Ocimene. Sweet, herbal and woody, and found in the leaves and flowers of many plants.
Lesser-known terpenes. Bisabolol (sweet and floral), nerolidol (woody and citrusy) and eucalyptol (eucalyptus-like) are among the others that turn up, each adding its own note.
What research says so far
Terpene research is growing, but much of what you read online runs ahead of it.
- Most studies are early. A great deal of the work comes from lab dishes and animals. A widely cited 2011 review that made the case for terpene effects also noted a real shortage of high-quality randomized trials of terpenes for mental health.
- Human studies are few and small. The limonene and pinene studies above involved 20 and 19 adults.
- Results can go either way. Limonene's effect on THC-related anxiety showed up in one trial, at one dose, while pinene's hoped-for effect on memory didn't.
- Dose and method matter. Studies use measured, often vaporized doses, while the terpenes in a jar of flower vary from batch to batch.
The fair conclusion: terpenes clearly drive aroma and flavor, and they might affect the way THC feels. Claims that a terpene will relax, energize or relieve anything go beyond the evidence.
Using terpene info when you shop
- Check the label. Michigan's required label items include THC and CBD content but not terpenes, so terpene details appear only when a producer chooses to share them.
- Look at product listings. Some packages and online listings may show a strain's top terpenes or a full lab breakdown. Where it's shown, focus on the top two or three.
- Trust your nose. Aroma is the most direct guide to terpenes. If a citrusy strain is your favorite, look for limonene next time; if you like earthy and musky, look for myrcene.
- Know where vape terpenes come from. Some vape oils are made from purified THC with terpene blends added back, and labels or listings sometimes say where those terpenes came from.
- Ask a budtender. Our budtenders are happy to help you find products that match your preferences.
- Keep notes. Write down the strains you enjoy and their top terpenes. Over time, a pattern in what you like may emerge.
At High Society, flower, pre-rolls, vape pens and concentrates are on the menu, and selection varies by store. Shopping is for adults 21 and older, or 18 and older with a valid medical marijuana card.
