Cultivars, Chemotypes and Strain Names: What the Labels Mean
What cultivar, chemotype, indica, sativa and strain names mean, and what genetic and lab studies show about whether those labels predict a product's chemistry or effects.
Content last updated . This page has not been medically reviewed.
In short
Cannabis products are often sold by "strain name" and labeled indica, sativa or hybrid, with promised effects. Studies of genetics and lab chemistry find those labels are weak guides. Evidence labels used here: established, mixed, marketing claim.Terms
| Term | Plain meaning |
|---|---|
| Cultivar | A named plant variety bred and propagated by growers. Researchers refer to THC-dominant and CBD-dominant cultivars. [1] |
| Strain name | A commercial name (for example on a menu or package). There is no standardized, regulated naming system for commercial cannabis. [1] |
| Indica / sativa / hybrid | Industry labels. Folk theory says indica is sedating and sativa energizing. [1] |
| Chemotype | A group of plants with a similar chemical profile, such as the same main cannabinoids and terpenes. [1] |
| Cannabinoid profile | The amounts of THC, CBD and other cannabinoids. Type I is THC-dominant, Type II balanced THC and CBD, Type III CBD-dominant. [1] |
What genetic studies found
A 2015 genetic study of 81 marijuana and 43 hemp samples found a moderate correlation between genetic structure and reported sativa or indica ancestry, but concluded that marijuana strain names often do not reflect a meaningful genetic identity. It also found that hemp is genetically more similar to indica-type marijuana than to sativa strains. [2] Label: mixed.What lab-chemistry studies found
A 2022 analysis of 89,923 lab-tested flower samples from six US states compared industry labels with measured cannabinoids and terpenes. [1]- Most samples (96.5 percent) were THC-dominant. [1]
- Samples labeled indica, hybrid and sativa were highly intermingled in terpene profile; the labels did not consistently align with the observed chemical diversity. [1]
- Simply labeling by dominant terpene separated samples better than the industry labels. [1]
- Three major terpene chemotypes were found across states. [1]
- Even the strain names that were most consistent still varied between products. [1]
Label: indica/sativa promises of predictable effects are a marketing claim; the authors say the scientific community does not accept the commercial nomenclature. [1] Limits: samples came from cultivators' compliance testing, labs may use non-standard methods, and growing conditions can change chemotype expression. [1] The study measured chemistry, not how people felt.
What actually shapes the effect
NIDA lists the amount taken, THC potency, a product's ingredients, how it is taken, other drugs, medical conditions, age, sex, genes and experience. [3] Strong products are linked with a greater chance of cannabis use disorder. [3] Whatever the label, studies find cannabis may affect a person's ability to drive. [3] See pregnancy, teens and driving.Reading labels without relying on names
A useful label shows measured cannabinoids and terpenes from a laboratory report, not just a name. See certificates of analysis and terpenes in cannabis. NCCIH reports that some products contain cannabinoid amounts that differ substantially from what the label states. [4]Safety note
Effects, risks and interactions are covered in THC and medication interactions. Laws vary by place; this is not legal advice.Frequently asked questions
Is indica different from sativa?
As labels, not reliably. A large chemistry analysis found indica, hybrid and sativa labels intermingled in terpene profile. [1]
Do strain names mean anything?
Some names are more consistent than others, but even the most consistent show variation between products. [1]
What is a chemotype?
A group of plants or products with a similar chemical profile, such as THC-dominant, balanced or CBD-dominant. [1]
Are hemp and indica related?
In a 2015 genetic study, hemp was more similar to indica-type marijuana than to sativa strains. [2]
How can I know what is in a product?
Look for a lab report that lists measured cannabinoids and terpenes; some products contain cannabinoid amounts that differ substantially from their labels. [4]
References
- Smith et al. The phytochemical diversity of commercial Cannabis in the United States. PloS one. 2022. PubMed abstract read 2026-10-22.
- Sawler et al. The Genetic Structure of Marijuana and Hemp. PloS one. 2015. PubMed abstract read 2026-10-22.
- National Institute on Drug Abuse (NIDA). Cannabis (Marijuana) DrugFacts. Read 2026-10-22.
- National Center for Complementary and Integrative Health (NCCIH). Cannabis (Marijuana) and Cannabinoids: What You Need To Know. Read 2026-10-22.