What 1,184 cannabis strains show: THC, flowering time, terpenes and parent strains (2026)

Key findings

We looked at every strain in the CTU strain database on October 22, 2026: 1,184 strains (702 hybrids, 260 indicas, 222 sativas). The headline: the indica / sativa label barely moves listed THC (medians 19% and 19%), but it does track flowering time. Sativas are almost four times as likely as indicas to need 10 weeks or more of flowering.

THC: half of all strains list 17–22%

Half of the 1,174 strains with a listed THC value sit between 17% and 22%, with a median of 20%. About 50% list 20% or more, 9% list 25% or more, and 11% list under 15% (mostly CBD-forward strains). Where sources give a range, we use its midpoint.

Listed THC comes from public strain listings and breeder information. It is not a lab result for any product you can buy: potency varies by grower, batch and plant.

Flowering: 8 to 10 weeks is the norm

Across 803 photoperiod strains with a listed flowering time, the median is 9 weeks and the middle half runs 8–9.5 weeks. Only 5% finish in under 8 weeks; 21% need 10 weeks or more. Autoflowers (5 in the database) are left out because they are timed from seed, not from the switch to 12/12 light.

Indica, hybrid, sativa: same THC, different calendars

Source: CTU strain dataset, verified Oct 2026 · THC n = 1,174, flowering n = 803 (photoperiod), terpenes n = 1,067

The type label is a naming convention more than a chemical one. In this database it says little about listed THC, but sativa-labeled strains take noticeably longer to finish: plan the grow calendar around the strain, not the label.

Terpenes: myrcene leads, caryophyllene is everywhere

Strain profiles list up to three dominant terpenes. Myrcene is listed first for 43% of the 1,067 strains with terpene data, followed by caryophyllene (22%) and limonene (20%). Counting any position, caryophyllene appears most often: in 880 strain profiles.

Terpene lists describe the strain’s typical aroma chemistry as reported by breeders and growers; they are not lab tests of a specific product. Browse strains by terpene.

Parents: a short list of classics behind modern strains

1,132 strains have a documented lineage. Afghani and OG Kush each appear as a named parent of more than 80 strains in the database.

How we counted

• Data: every strain page live in the CTU strain database on October 22, 2026 (1,184 strains). Values are the ones shown on the strain pages; generic placeholder values from the original import are excluded, as on the pages.
• Ranges: where a strain lists a range (for example 18–24% THC or 8–10 weeks), we use the midpoint. Medians and “middle half” (25th–75th percentile) are computed over strains that list the value.
• Flowering excludes autoflowers. Terpenes use the order listed on the strain page. Lineage counts each named parent once per strain.
• Full method, sources and what we do not claim: Strain data & methodology.