Master Tree
A rare cross of Master Kush and Tree of Life, prized in hashmaking circles but thinly documented outside breeder marketing.
Master Tree is a niche cross floated by a handful of seed banks and hash makers. Almost everything written about it — flavor notes, effect profiles, even precise lineage — comes from breeder copy and forum posts, not lab data or peer-reviewed work. It's probably a perfectly good plant. But you should treat the specifics (exact THC numbers, claimed 'indica' sedation, terpene dominance) as marketing folklore until a verified lab certificate of analysis is in front of you.
Overview
Master Tree is a boutique hybrid that circulates mostly among hashmakers and small seed banks. It is generally described as a cross of Master Kush and a 'Tree of Life' cut, though the parental Tree of Life clone is itself poorly documented and may refer to different plants depending on the source Disputed.
Unlike well-studied cultivars such as OG Kush or Cherry Pie, Master Tree has not — to our knowledge — appeared in peer-reviewed chemotype surveys or large commercial chemovar datasets. That means almost every specific claim about it (THC percentage, terpene profile, yield) is either breeder copy or aggregated user reports, not measured data No data.
Chemistry
There is no published, independent chemotype data for Master Tree that we have been able to verify. Vendor listings typically place THC in the high-teens to low-20s percent range and CBD below 1%, which is unremarkable and matches most modern Type I (THC-dominant) cultivars [1] Weak / limited.
Terpene claims vary by vendor. Some list myrcene-dominant profiles with secondary caryophyllene and limonene; others lead with caryophyllene. Without a certificate of analysis (COA) from a specific grow, treat the terpene profile as unknown.
A broader caveat: the popular idea that crossing a 0.5% myrcene threshold makes a plant 'indica' or sedating is folklore, not science. It traces to internet repetition rather than any controlled human study No data [2]. If you want to know what's in your jar of Master Tree, read the COA for that specific batch.
Reported Effects
User reports — on forums and dispensary menus — describe Master Tree as relaxing, body-heavy, and useful for sleep or evening use Anecdote. These are consistent with how Master Kush descendants are generally marketed, but consistency of marketing language is not evidence of consistency of pharmacology.
There are no strain-specific clinical trials for Master Tree, and almost no cannabis cultivar has strain-specific clinical evidence. The general pharmacology of THC — euphoria, altered time perception, increased appetite, anxiety at higher doses, impaired short-term memory and motor coordination — applies here as it does to any THC-dominant flower [3][4] Strong evidence.
The widely repeated claim that 'indica vs. sativa' reliably predicts effects is not supported by chemotype data; the labels correlate poorly with measured cannabinoid and terpene content [5] Strong evidence. So 'Master Tree is an indica that will couch-lock you' is a marketing prediction, not a chemical one.
Lineage
The commonly cited lineage is Master Kush × Tree of Life.
- Master Kush is a well-known Hindu Kush-derived cultivar associated with Dutch coffeeshop culture since the 1990s [6].
- Tree of Life is ambiguous. Several unrelated cuts have circulated under this name, including selections worked by different breeders. Without a verified breeder pedigree, the maternal/paternal line on this side should be considered disputed Disputed.
If provenance matters to you — for breeding, for medical consistency, or just for honesty — ask the seller for the specific breeder, the seed lot, and ideally a phenotype description. 'Master Tree' from two different vendors may not be the same plant.
Cultivation Basics
Breeder and grower reports — again, anecdotal — describe Master Tree as a medium-height, branchy plant with dense Kush-style flower structure. Reported flowering time is roughly 8–9 weeks indoors, with moderate yields Anecdote.
General cultivation principles that are well established apply here:
- Kush-leaning plants often prefer drier finishing conditions to reduce bud rot risk in dense colas Strong evidence.
- Topping and light defoliation tend to improve light penetration in branchy phenotypes Weak / limited.
- Nutrient and pH management drives yield far more than strain selection at the home-grow scale Strong evidence.
If you find a stable cut, clone it. Seed populations of niche crosses like this usually show meaningful phenotype variation.
Marketing vs. Reality
Things vendors say about Master Tree that are probably true:
- It exists and has been sold as seed and flower.
- It descends from Master Kush on at least one side.
- THC-dominant, low CBD — same as most flower on the market.
Things that are marketing, not fact:
- Precise THC percentages quoted without a batch-specific COA.
- 'Indica' as a predictor of sedation [5] Strong evidence.
- Claims that a specific terpene profile guarantees a specific effect in a specific person — terpene–effect research in humans is preliminary and mostly in vitro or animal-model Weak / limited.
- Any 'entourage effect' claim presented as settled science. The hypothesis is plausible and partially supported, but far from proven for arbitrary cultivar–effect pairings [7] Disputed.
Bottom line: if you enjoy Master Tree, enjoy it. Just don't pay a premium based on a story the seller can't back with data.
Sources
- Peer-reviewed ElSohly MA, Mehmedic Z, Foster S, Gon C, Chandra S, Church JC. Changes in cannabis potency over the last two decades (1995–2014). Biological Psychiatry. 2016;79(7):613–619.
- Peer-reviewed Smith CJ, Vergara D, Keegan B, Jikomes N. The phytochemical diversity of commercial Cannabis in the United States. PLOS ONE. 2022;17(5):e0267498.
- Government National Academies of Sciences, Engineering, and Medicine. The Health Effects of Cannabis and Cannabinoids: The Current State of Evidence and Recommendations for Research. Washington, DC: The National Academies Press; 2017.
- Peer-reviewed Crean RD, Crane NA, Mason BJ. An evidence-based review of acute and long-term effects of cannabis use on executive cognitive functions. Journal of Addiction Medicine. 2011;5(1):1–8.
- Peer-reviewed Watts S, McElroy M, Migicovsky Z, Maassen H, van Velzen R, Myles S. Cannabis labelling is associated with genetic variation in terpene synthase genes. Nature Plants. 2021;7(10):1330–1334.
- Book Clarke RC, Merlin MD. Cannabis: Evolution and Ethnobotany. Berkeley: University of California Press; 2013.
- Peer-reviewed Russo EB. Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects. British Journal of Pharmacology. 2011;163(7):1344–1364.
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