Ultra Cheese
A Barney's Farm hybrid marketed as a heavy-yielding, high-THC take on the classic UK Cheese lineage.
Ultra Cheese is a Barney's Farm production strain sold as a beefed-up Cheese. The breeder's marketing copy is basically all we have — no independent chemotype panels, no peer-reviewed data, no verified lineage records. It probably tastes cheesy and skunky because most Cheese descendants do, and it likely lands somewhere in the 15–20% THC range like most modern indoor hybrids. Anything more specific — exact parents, terpene percentages, 'relaxing indica' effects — is marketing, not measurement.
Overview
Ultra Cheese is a photoperiod hybrid released by Amsterdam seed company Barney's Farm. It is marketed as an indica-leaning descendant of the UK Cheese line, promising the classic sharp, fermented-dairy aroma with higher yields and higher THC than the original [1]. Like most modern commercial Cheese offshoots, it exists primarily as a branded seed product; there is no public chemotype database entry or independent lab profile for it. If you're comparing it against UK Cheese or Blue Cheese, assume the differences you read about are breeder claims until a lab receipt says otherwise. No data
Chemistry: cannabinoids and terpenes
Barney's Farm lists Ultra Cheese at roughly 19–21% THC with negligible CBD [1]. These are catalog figures, not aggregated lab results, and seed-catalog THC numbers systematically run higher than independent testing of finished flower [2][3]. Expect real-world flower to land anywhere from 14% to 22% depending on phenotype and grow. Weak / limited
No independent terpene panel for Ultra Cheese has been published. The broader Cheese family (UK Cheese, Exodus Cheese, Blue Cheese) tends to be myrcene-dominant with notable β-caryophyllene, which is the chemistry usually associated with the funky, savory aroma [4]. Whether Ultra Cheese follows that pattern in any given grow is unconfirmed. No data
Ignore claims that any specific terpene percentage (the popular '0.5% myrcene = couchlock' rule, for example) predicts effects — that threshold is folklore with no clinical basis [5].
Reported effects
There are no clinical trials on Ultra Cheese, and there almost certainly never will be — clinical cannabis research uses standardized extracts, not seed-bank cultivars [6]. What we have is user reports on forums and seedbank pages describing a relaxed, heavy body feel with mild euphoria, typical of high-THC indica-leaning hybrids [1]. Anecdote
A few honest caveats:
- The 'indica = sedating, sativa = uplifting' framework does not reliably predict effects; chemical composition matters more than label, and even that only loosely [7]. Disputed
- Any THC-dominant flower at ~20% THC can cause anxiety, rapid heart rate, or paranoia, especially in less-experienced users or at higher doses [8]. Strong evidence
- Tolerance to THC develops quickly with regular use [9]. Strong evidence
Lineage
Barney's Farm describes Ultra Cheese as derived from the original UK Cheese line but does not publish specific parents or a pedigree tree [1]. The original Exodus Cheese cut, from which the 'Cheese' family descends, was itself a phenotype pulled from Skunk #1 seeds in the UK in the late 1980s and propagated as a clone [10]. Any seed-form 'Cheese' is a reconstruction — a cross designed to approximate the clone's aroma from seed — not a direct copy. Weak / limited
So the honest answer on lineage: 'Cheese family, exact parents undisclosed.' Treat any specific pedigree claim you see on third-party strain databases as unverified. Disputed
Cultivation basics
Breeder-reported specs [1]:
- Flowering time: ~55–60 days indoors
- Indoor yield: 600–650 g/m² under optimal conditions
- Outdoor harvest: early October in the Northern Hemisphere
- Height: medium, manageable indoors
- Difficulty: reported beginner-friendly
Seedbank yield figures assume ideal light, nutrients, and training; typical home grows produce substantially less [11]. Cheese-family plants are notoriously pungent during flowering — carbon filtration is not optional if you care about discretion [12]. Anecdote
As with any Cheese cross, expect phenotype variation from seed. If you want the specific 'cheese' expression, plan to pop multiple seeds and select. Weak / limited
Marketing vs. reality
What Barney's Farm is selling is a brand: a recognizable name (Cheese), a THC figure that sounds impressive, and yield numbers that top out the range. That's fine — that's how the seed market works. But specific marketing claims worth pushing back on:
- '21% THC.' Seedbank potency claims are self-reported and not independently audited. Independent testing of retail cannabis has repeatedly found real THC values below label claims [2][3]. Strong evidence
- 'Indica effects.' The indica/sativa distinction does not reliably predict how a flower will feel [7]. Strong evidence
- 'Ultra' anything. There is no standard defining what makes a Cheese 'ultra.' It's a name. No data
If you like Cheese-family flavors and want a reasonably forgiving indoor plant, Ultra Cheese is a plausible pick. Just buy it for what it is — a competently marketed seed product — not for the numbers on the tin.
Sources
- Practitioner Barney's Farm. Ultra Cheese product page. Amsterdam, Netherlands.
- Peer-reviewed Jikomes N, Zoorob M. The Cannabinoid Content of Legal Cannabis in Washington State Varies Systematically Across Testing Facilities and Popular Consumer Products. Scientific Reports. 2018;8:4519.
- Peer-reviewed Schwabe AL, Hansen CJ, Hyslop RM, McGlaughlin ME. Comparing potency of Cannabis to label claim in Colorado. Journal of Cannabis Research. 2023;5:14.
- 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.
- Peer-reviewed Russo EB. Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects. British Journal of Pharmacology. 2011;163(7):1344–1364.
- 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 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;7:1330–1334.
- Peer-reviewed Hall W, Degenhardt L. Adverse health effects of non-medical cannabis use. The Lancet. 2009;374(9698):1383–1391.
- Peer-reviewed D'Souza DC, Cortes-Briones JA, Ranganathan M, et al. Rapid Changes in CB1 Receptor Availability in Cannabis Dependent Males after Abstinence from Cannabis. Biological Psychiatry: Cognitive Neuroscience and Neuroimaging. 2016;1(1):60–67.
- Reported Bienenstock D. 'The Story of Cheese, the UK's Most Iconic Cannabis Strain.' High Times, 2018.
- Book Cervantes J. The Cannabis Encyclopedia: The Definitive Guide to Cultivation & Consumption of Medical Marijuana. Van Patten Publishing; 2015.
- Peer-reviewed Rice S, Koziel JA. Characterizing the Smell of Marijuana by Odor Impact of Volatile Compounds: An Application of Simultaneous Chemical and Sensory Analysis. PLOS ONE. 2015;10(12):e0144160.
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