Chemotype genetics-true
Chemotype
Type I
THC-dominant
Chemotype — the cannabinoid and terpene profile — is the lab-verifiable signal that stays true to a cultivar’s genetics, which is why scientists classify cannabis by chemical profile (a “chemovar”) rather than by name (Hazekamp & Fischedick 2012). Cannabinoid type is set largely by a single gene (the THC:CBD ratio); about 96% of commercial flower is Type I, THC-dominant. Terpene profiles are sourced from Certificates of Analysis (COA) and roll out as Areto’s lab-verified data comes online.
Indica / Sativa — retail shopping guide
Indica, sativa and hybrid are a retail shopping convention — not a reliable guide to genetics or effects. When researchers analysed 89,923 commercial samples across six states, these labels did not predict a plant’s terpene or cannabinoid profile, and a genome-wide study found sativa- and indica-labelled plants to be genetically indistinct (PLOS ONE 2022; Nature Plants 2021). The labels are so fluid that AK-47, a hybrid, won “Best Sativa” at the 1999 Cannabis Cup and “Best Indica” four years later. For an accurate, genetics-true picture, see the chemotype above.
Genetics & Lineage
Parents
This strainJamaican High Grade
Descendants (5)
Breeder releases (1)
| Breeder | THC | Flowering | Seeds | Rating |
|---|
| Yardie Seeds | 16.0% | 53d | feminized | — |
About Jamaican High Grade
Jamaican High Grade is one of the best and most sort after weeds in Jamaica and is a pure old school smoke and is not ready available to tourists in Jamaica and is usually reserved for the local market for the music elite & hardcore Rasters who smoke only native natural strains. There are many reggae songs referring to High Grade Weed as the best. High Grade can be Sativa or Indica or both mixed, High Grade is referred to as a good quality native weed rather than a strain. High: long high, big head rushes a sociable relaxing buzz.
Flowering indoor: 7 - 8 weeks
Yield: 400 gr. m2 (USA) 1.4 Oz. Sq ft.
Flowering outdoors: Northern October / Southern April
Strain: High Grade
Genetics: Jamaican Sativa or Indica or Both Crossed.
THC: 16% +
Frequently asked questions
What are the genetics of Jamaican High Grade?
Jamaican High Grade comes from Jamaica - Hybrid.
Is Jamaican High Grade indica or sativa?
Jamaican High Grade is classified as indica/sativa hybrid.
How much THC does Jamaican High Grade have?
Across breeder releases, Jamaican High Grade tests around 16.0% THC.
How long does Jamaican High Grade take to flower?
Jamaican High Grade flowers in about 53 days.
Is Jamaican High Grade available as feminized or autoflowering seeds?
Jamaican High Grade is offered as: feminized.