Blueberry (S-LAB and Tilray): lineage from Thai landraces and myrcene in the profile

What is Blueberry and where does this strain come from?

Blueberry is a strain with indica genetics, created by crossing two Thai landraces known as purple thai and highland thai with an afghani strain. The lineage is known from the breeder DJ Short's accounts, publicly described, so the origin is not a reconstruction based on the name or a guess from a popular strain database.

Two of the three parents are landraces, meaning populations cultivated locally for generations, not named individual cultivars. Thai strains bring genetics from Southeast Asia and a long flowering cycle, while afghani contributes to the compact structure of the flower cluster. Retail classification describes the result as indica, although the indica or sativa label does not provide any certainty about the chemical composition of the batch of dried flower that reaches the pharmacy.

Let’s separate two things that are easily confused. The name Blueberry refers to a breeding line known since the 1980s, while the dried flower available today in Polish pharmacies is a specific batch from a specific producer, cultivated under controlled conditions and laboratory tested before the release of the batch. The common name does not guarantee that two batches from different producers have the same composition, and sometimes they do not. We maintain a complete list of strains available in Polish pharmacies in the comparison of currently available strains, which we update with deliveries.

Which producers supply Blueberry to Polish pharmacies?

Two: S-LAB and Tilray. Both versions are marketed under the same strain name, but they are separate medicinal products, with their own permits and their own batches. The availability of each changes with the rhythm of deliveries, so the list from last month may already be outdated after a few weeks.

The difference between the two versions of the same strain comes from cultivation and processing, not from the name on the package. Each producer maintains their own mother plants, their own drying protocol, and their own testing to release the batch, so the chemical profile of two batches can differ even with identical genetics. Available data do not separate either the terpene profile or the range of active substance content by individual producers, which is why everything below describes the strain, not the version from a specific company.

The THC content is provided only as a range of 16.2-24.2%. The reason is simple: the declaration on the package has an allowable tolerance of about ten percent of the value, and individual pharmacy items assigned to this strain declare different levels. A single number would imply precision that does not exist in this chain. Moreover, pharmacy-grade dried flower in the Rpw category is something different than retail dried flower, which is subject to separate regulations. The assortment and conditions of issuance change over time, and we maintain a collective overview in the entry on available strains.

What does Blueberry smell and taste like?

The aroma is described as sweet and fruity, with a distinct berry note, on which the strain built its name. In the background, earthiness and a slight resinousness from the afghani side can be detected. The taste may be milder than the scent of the dried flower itself and leans more towards floral than fruity.

However, the description of the scent is the least documented part of the knowledge about each strain. There is no sensory standard for cannabis flower, and reports come from users and breeder materials, not from testing. Two batches of the same strain, harvested in different cycles, can smell noticeably different because volatile components diminish over time and more quickly at higher temperatures. The above description is therefore a point of reference, not a promise of what the next person will feel.

Terpenes are responsible for the scent, not the substances that determine the strength of the effect. The profile of this strain describes, among other things, myrcene, which is associated in other plants with earthy and hoppy notes. It is worth remembering that the nose is not a measuring instrument: the description of the aroma does not allow for estimating the composition of the batch or predicting its effects.

How long does it take for Blueberry to take effect and how long does the effect last?

After vaporization, the first sensations appear within a few minutes, and after ingestion, only after half an hour to two hours. The method of administration is decisive, not the strain itself: no separate studies on the absorption process for any single cultivar have been published, so the ranges below describe physiology, not the properties of Blueberry.

The route of administration determines the course more than the variety itself. After vaporization, the substance passes from the lungs to the blood almost immediately, so the first sensations appear after a few minutes, the intensity increases for another ten to thirty minutes, and the whole effect lasts for two to four hours. After ingestion, the raw material first passes through the intestine and liver, so the first sensations are awaited from half an hour to two hours, and the episode can last six, sometimes eight hours. Hence the most common mistake with oral administration: anyone who thinks nothing is happening after thirty minutes and takes another dose will receive both doses at once. The above ranges describe the route of administration, not this variety; pharmacokinetic studies for a single cultivar have not been published.

This applies equally to both pharmaceutical versions of this strain, as the ranges result from the method of administration, not from who produced the dried flower.

What is known and what is not known about the effects of Blueberry?

Nothing has been demonstrated directly about this strain. Published studies concern individual components, primarily myrcene, and were conducted on rodents. The rest, such as descriptions of mood, drowsiness, or relief, comes from user reports and sales materials, and this is not the same kind of evidence as an experiment.

The terpene profile is described by one source, the Polish database budcare.pl. It lists myrcene as the leading position, and alongside it linalool, humulene i bisabolol. We do not provide percentage shares because the denominator in such compilations remains unknown: summed values for the same components yield 46, 73, and 83 percent of the total at different times. Since the sums do not add up to one hundred, the number next to the component name is not information, but a value without reference.

Three studies concern myrcene itself, all conducted on mice. In 2002 (Vale TG et al., Phytomedicine, PMID:12587690), myrcene administered intraperitoneally at doses of 100-200 mg/kg reduced motor activity and prolonged sleep induced by pentobarbital, at 200 mg/kg by about 2.6 times, but also decreased the number of entries into the open arms of the elevated plus maze, which the authors described as a weak anxiogenic effect. In 1990 (Rao VS et al., Journal of Pharmacy and Pharmacology, PMID:1983154), doses of 10-40 mg/kg reduced pain responses in the hot plate test and in the acetic acid-induced writhing test, and the effect was reversed by naloxone and yohimbine. In 2024 (Wagner JK et al., NeuroSci, PMID:39728677), beta-myrcene administered as vapor had anxiolytic effects in females, in males only after a single inhalation, and did not provide synergy with cannabidiol.

In humans, myrcene alone has not been shown to alleviate insomnia at doses typical for inhalation of dried flower. The direction of the effect in rodents depends on the route of administration and sex: intraperitoneal injection in 2002 described a slightly anxiogenic effect, while inhalation in 2024 showed an anxiolytic effect in females. These two results do not negate each other; they simply show that the conclusion depends on conditions that no popular strain database provides.

What side effects have been reported for this strain?

None exclusively attributed to this strain. Safety monitoring is conducted for medicinal products marked with a batch number, not for the trade name of the plant, so public compilations do not allow us to say how many reports specifically concerned Blueberry or whether any at all did.

Reports of adverse effects are collected for medicinal products with a batch number, not for the strain name, so the following pertains to hemp dried flower as a group of raw materials. The most frequently reported symptoms are dry mouth, red eyes, and increased heart rate. Dizziness upon rapid standing, daytime drowsiness, and temporary worsening of short-term memory are less frequently described, as well as anxiety that increases with dosage. A separate issue is medications taken concurrently, especially sedatives and those affecting coagulation: their assessment requires knowledge of the entire list of preparations, not just the description of the plant. We do not provide the frequency of these symptoms numerically, as public compilations for hemp dried flower in Poland do not separate them by individual products.

A separate note concerns the method of dispensing. Hemp flower is a pharmaceutical raw material dispensed by prescription in the Rpw category, and concerning symptoms after its use, reports should be made to the attending physician or pharmacist, who can forward them along with the batch number. Without this number, reports cannot be linked to a specific product, which is where the gap described above comes from.

How to vaporize this strain?

We do not provide any value here because we have no source for it. Sources describing this strain do not contain a recommended working temperature, and what we have are boiling points of pure compounds: myrcene, leading in this profile, boils at around 167 degrees Celsius, while caryophyllene only above 256. The setting of the vaporizer is not equal to the temperature of the dried flower itself.

The discrepancy between published temperature tables arises from the fact that the boiling points of terpenes were measured for pure substances at normal pressure, not for dried flower in the vaporizer chamber. In the plant, the same components evaporate under different conditions, and some decompose before they can evaporate. Why such tables contradict each other, rozbieramy osobno.

The practical consequence is simple. The lower the device is set, the greater the proportion of components with lower boiling points in what leaves the chamber, and the smaller the load of active substances; this relationship applies to every dried flower, not just this strain, and no specific setting is recommended by this text or any of the sources it stands on. What happens to terpenes at subsequent settings is described in the text about the evaporation of terpenes from dried flower, and the state of research on myrcene itself in the text dedicated to this terpene..

Which strains are related to it?

None of the strains available in Polish pharmacies. The pedigree graph does not assign siblings to Blueberry, and this is not a gap in the data: two out of three parents are landraces, and the third belongs to a broad Afghani family, so a common parent is not enough to consider two cultivars as siblings.

Landrace is not a single, identified strain, but a local cultivated population preserved over generations, in which individuals differ from one another. The same applies to names like Afghani or Haze: they describe style and geographical origin, not a specific plant with a fixed genotype. Two cultivars that share only such a parent may have nothing in common besides the label, which is why an empty sibling list is a result here, not a lack of data.

The warning also works the other way around. A common term in the name does not prove kinship, and there are no exceptions to this; in this collection, the term Kush is carried by cultivars of completely different origins, some with established parents, some without. The strains actually present in Polish pharmacies along with what is known about their pedigrees have been gathered in a comprehensive overview of strains.

Frequently Asked Questions about the Blueberry strain

Is Blueberry available in Polish pharmacies?

Yes. The strain is supplied by two manufacturers, S-LAB and Tilray. However, availability changes with the rhythm of deliveries, so the current status should be checked with a pharmacist or in a comprehensive overview of strains.

What is the THC content in the Blueberry strain?

The pharmacy items assigned to this strain fall within the range of 16.2-24.2%. We provide a range, not a single number, because individual items declare different levels, and each declaration comes with a tolerance of around ten percent of the value.

Which terpene dominates the profile of the Blueberry strain?

Myrcene. The profile describes one source and also mentions linalool, humulene, and bisabolol. We do not provide percentage shares because the sources do not disclose the denominator to which these shares refer.

Does Blueberry help with insomnia?

This has not been demonstrated. No studies have been published showing that myrcene alleviates insomnia at doses typical for inhalation of dried flower, and results in rodents depend on the route of administration and the sex of the animals.

Is Blueberry an indica or sativa?

Sources consistently describe it as an indica. However, the indica or sativa label refers to the plant's morphology and naming tradition, not the chemical composition of a specific batch of dried flower.

Is a prescription required for the release of Blueberry?

Yes. Dried flower in the Rpw category is issued exclusively by a doctor's prescription, on a prescription issued by name, and is not available for over-the-counter sale.

The material is for informational purposes and does not replace medical consultation. Dried flower is a pharmaceutical raw material issued by a doctor's prescription in the Rpw category. Editorial text: ubocha.