Cannabis terpenes explained simply
Terpenes are compounds that give cannabis its smell and taste. They are not cannabinoids. They do not cause a high. More than 100 terpenes appear in cannabis. Labs measure them as a percent of flower weight, often 1% to 3%.
What terpenes are
Terpenes are hydrocarbons built from isoprene units. Plants make them. They also appear in pine, citrus, lavender, hops, and black pepper. In cannabis, terpenes sit in the same resin glands as THC and CBD. The plant uses them for defense and to attract pollinators.
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Common cannabis terpenes
- Myrcene: earthy, musky. Also in hops and mango.
- Limonene: citrus. Also in lemon peel.
- Linalool: floral. Also in lavender.
- Beta-caryophyllene: pepper, wood. Also in black pepper.
- Alpha-pinene: pine. Also in pine needles.
- Terpinolene: herbal, sweet. Also in nutmeg.
Why terpene numbers differ
Terpene content changes with genetics, light, temperature, harvest date, and curing. It also drops after harvest. Terpenes are volatile. Heat, air, and light remove them. A jar opened many times loses terpenes. Dry flower loses terpenes faster than whole flower because more surface is exposed.
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Terpenes in convenience formats
Convenience products change terpene content. Distillate vapes strip terpenes during refinement, then makers add them back. The added terpenes can be cannabis-derived or botanical. Live resin and live rosin keep more plant terpenes. Edibles lose most volatile terpenes in baking and cooking. Pre-ground flower and pre-rolls expose more plant surface to air, so terpenes fade sooner. A label that lists terpenes by name and amount gives more information than a label that lists only natural terpenes.
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What the entourage effect claim means
Some sellers claim terpenes boost or change THC effects. That idea is called the entourage effect. Human trials are limited. Reviews call it a hypothesis. Treat a strong terpene claim as marketing until a lab report and clinical data support it.
How to read a terpene label
- Look for a lab report with a terpene panel.
- Check units: percent or mg/g.
- Compare total terpenes, not one line item.
- Note the test date. Terpenes drop after testing.
Store cannabis in a sealed container, in the dark, at room temperature. Do not add citrus peel or other plant material. That adds smell and mold risk, not cannabis terpenes.