1. What Is a Terpene
Terpenes are volatile aromatic molecules produced by a large portion of the plant kingdom. Hemp is no exception in this regard: pine, lemon, lavender, and hops also produce them—sometimes exactly the same ones.
The plant doesn’t produce them for us. They are survival tools: to attract pollinators, repel insects, and limit the growth of fungi. The scent you enjoy is a chemical defense mechanism.
More than two hundred have been identified in cannabis. In practice, only about ten appear in significant quantities in an analysis—the rest are present in trace amounts.
2. Where They’re Found
Terpenes are produced and stored in the tips of trichomes, in exactly the same place as cannabinoids. That explains everything else.
In concrete terms: anything that damages a gland causes a loss of terpenes. This includes overly aggressive sifting, handling with warm hands, rough transport, or improper pressing. The molecule doesn’t degrade—it simply evaporates.
How these glands work is explained in detail in our article on where terpenes are located in the plant.
3. The Eight Terpenes You’ll Actually Encounter
| Terpene |
Smell |
Also found in |
Volatility |
| Myrcene |
Earthy, musky, ripe fruit |
Mango, hops, thyme |
Medium |
| Limonene |
Citrus, fresh zest |
Lemon, orange, juniper |
Medium |
| Pinen |
Pine, resin, forest |
Pine, rosemary, basil |
High |
| Caryophyllene |
Pepper, spices, wood |
Black pepper, clove |
High |
| Linalool |
Floral, lavender, sweet |
Lavender, coriander |
Low |
| Terpinolene |
Herbaceous, woody, slightly lemony |
Nutmeg, cumin, lilac |
Low |
| Humulene |
Hops, earth, dry wood |
Hops, sage |
Low |
| Bisabolol |
Soft floral, chamomile |
Chamomile |
Low |
The volatility column is the most useful in the table. Light terpenes like pinene and caryophyllene evaporate first—which is why a resin loses its fresh, peppery notes first and retains its heavy, sweet notes longer.
A resin that smells only sweet and earthy doesn’t necessarily have that profile: it may simply have lost everything else.
4. What a Terpene Profile Really Tells You
This is where we need to be precise, because the market tends to say just about anything.
What a profile tells you: the strain used, the harvest time, and the quality of the drying and storage processes. A rich and complex profile is a hallmark of careful craftsmanship —it’s a reliable indicator of quality.
What a profile doesn’t tell you: the effect you’ll experience. The correlations you see everywhere—such-and-such a terpene for sleep, another for focus—are based on studies conducted at doses that bear no relation to what we actually inhale. Research has not established anything so clear-cut to date.
We break down this distinction between what’s established and what’s assumed in our article on what the research really shows.
5. The Entourage Effect, Without Exaggeration
The hypothesis is simple: cannabinoids and terpenes are thought to work together, producing different effects than each would produce on its own.
This is plausible and consistent with the experience of many users. It hasn’t been proven in the conventional sense, and the available studies are mostly in vitro or use doses far removed from real-world use.
What we can honestly say is this: a full-spectrum product retains what the plant has produced, while an isolate retains nothing. This is an argument for staying true to the plant, not a promise of a specific effect.
6. Why They Disappear, and How to Keep Them
Three enemies, in order of importance:
- Heat —every rise in temperature causes the lightest compounds to evaporate. Pressing at too high a temperature destroys in a matter of minutes what the plant took months to produce.
- Air —oxidation causes continuous degradation. A half-empty container ages faster than a full one.
- Light —UV rays break down the molecules. A clear jar on a shelf is the worst possible storage option.
In practice: an airtight, opaque, full container, stored between 15 and 20 °C.
The precise temperatures depending on usage—daily use, reserve, or long-term storage—are detailed in our guide to storing CBD hash.
7. Reading a Terpene Analysis
Concentrations are expressed as a percentage by weight. Here are three benchmarks to help you interpret the data:
- A dominant terpene above 0.5% — distinct profile; the scent will be clear and recognizable;
- A total of more than 2% —a rich profile, indicating high-quality processing;
- Fewer than five terpenes detected —a depleted profile, likely due to drying or storage issues.
Be wary of a profile that’s too “clean.” A single terpene at a very high concentration, without any others, resembles an additive more than a plant.
Our terpene chart details each of these molecules and the strains in which they are found.