Crack open a fresh jar and before you see anything, you smell it. Maybe it’s sharp citrus. Maybe it’s pepper, or pine, or something sweet and floral that you can’t quite place. That first hit of aroma is terpenes at work, and once you start paying attention to them, you’ll never shop the same way again.
So what are they?
Terpenes are fragrant oils that plants make to protect themselves and attract pollinators. They’re the reason lavender smells like lavender and oranges smell like oranges. Cannabis makes more than a hundred of them, stored in the same tiny, frosty resin glands (trichomes) that hold THC and CBD.
Every cultivar has its own blend. That blend is the personality of the strain: the smell in the jar, the taste on the exhale, the thing you remember about it a week later.
Why your nose is a better guide than the THC number
Most people shop by THC percentage. It’s the biggest number on the label, so it’s tempting. But two products at 22% THC can be completely different experiences, and the terpene profile is a big part of what sets them apart.
- Flavour. Terpenes are the difference between a smooth, fruity session and a harsh one.
- Character. Plenty of people find they consistently enjoy a certain aroma family, whether that’s citrusy, earthy or floral.
- Freshness. Terpenes fade with heat, light and time. A loud, clear aroma usually means the flower has been looked after.
Try this: the sniff test
Next time you have two or three strains at home, line them up. Open each jar, take a slow breath, and jot down the first word that comes to mind. Citrus? Diesel? Berries? Do it for a few weeks and you’ll start to see a pattern in what you reach for. That pattern is worth more than any label.
What about effects?
You’ll hear that certain terpenes are relaxing or energising. The honest answer is that the research is still young. Scientists are exploring whether terpenes and cannabinoids work together (the so-called “entourage effect”), but there’s no reliable terpene-to-feeling chart yet. Use terpenes for flavour and for keeping track of what you love, and let your own experience fill in the rest.
Where to start
Browse our flower and look for the dominant terpenes on each product. Then read our field guide to common terpenes to learn the eight you’ll see most often.