Haze #27

Overview

Haze #27 is a sativa-dominant hybrid that emerged in Dutch cannabis breeding circles, likely in the 1990s or early 2000s Anecdote. It is cultivated primarily in greenhouse and indoor settings across Europe and has developed a following among growers seeking tall, elongated plants with extended flowering periods. The strain is named after the broader Haze family, a lineage traceable to South Asian and Mexican landraces crossed in California in the 1970s ^[1]. Haze #27 specifically was likely developed as a numbered cultivar within a larger breeding line, though definitive documentation is limited Disputed. Unlike many modern cannabis strains, Haze #27 has not been officially released by a major seed bank under that exact designation, which has contributed to variation and confusion in the market Anecdote.

Lineage & Genetics

The parentage of Haze #27 is contested Disputed. The most commonly cited claim is that it is a cross between an original Haze line (or a Haze IBL—inbred line) and Skunk #1 ^[2]. Other reports suggest crossings involving Blueberry, Northern Lights, or other foundational strains, but these lack verifiable documentation Anecdote. The '27' designation suggests it may be one of many numbered selections from a breeding program, but the identity of the breeder and exact cross remain unclear. It is possible that different phenotypes labeled 'Haze #27' in circulation represent distinct genetic backgrounds, a common problem in unregulated seed markets. Growers should be aware that seed genetics may not be stable, and plants grown from the same seed line may show significant variation Anecdote.

Cannabinoid & Terpene Profile

Haze #27 samples tested by independent labs report THC concentrations between 18% and 22%, with minimal CBD (<1%) Anecdote. Terpene profiles vary by cultivation method and environmental conditions, but limonene is frequently reported as the dominant terpene, contributing to a citrus-forward aroma Weak / limited. Secondary terpenes commonly include pinene (herbaceous, pine-like) and myrcene (earthy, herbal) Anecdote. No peer-reviewed chemical analysis specific to Haze #27 exists in the published literature. The wide range of reported cannabinoid levels reflects inconsistent cultivation practices, genetic drift, and lack of standardized breeding records. The marketing claim that specific terpene ratios (e.g., 'myrcene at 0.5% causes a sedative threshold') are predictive of effects is folklore without supporting evidence No data—terpene effects in cannabis are poorly understood in controlled settings ^[3].

Reported Effects & User Experience

Anecdotal user reports and grower feedback describe Haze #27 as producing uplifting, energetic, and cerebrally stimulating effects typical of sativa-dominant strains Anecdote. Common descriptors include mental clarity, focus, and reduced fatigue. Some users report mild anxiety or racing thoughts at higher doses, a common pattern with sativa-heavy cultivars Anecdote. No clinical trials have tested Haze #27 specifically, so all effect claims are user-reported and subject to placebo, expectation bias, and individual neurochemistry variation No data. The assumption that 'sativa = energetic' and 'indica = sedative' is a simplification not supported by modern cannabinoid or terpene research ^[4]. Cannabis effects depend on THC/CBD ratio, individual endocannabinoid system sensitivity, set, setting, and consumption method—strain name alone is a poor predictor. Treat anecdotal effect claims as subjective experience, not medical information.

Cultivation & Growing Profile

Haze #27 is a vigorous, tall-growing plant suited to greenhouse cultivation and tall indoor setups with adequate vertical space Anecdote. It exhibits long internode spacing and may reach 1.5–2+ meters in height indoors without aggressive pruning Anecdote. The strain flowers for 10–12 weeks, placing it in the longer-flowering category—significantly longer than many modern cultivars Anecdote. Indoor yields typically range from 500–700 g/m² under optimal conditions (1000W HPS, CO₂ supplementation, and expert management) Anecdote. Growth difficulty is moderate to high: the plant demands consistent feeding, good air circulation, and pest/disease vigilance. Mold susceptibility is moderate; the dense bud structure and extended flowering period can create humidity challenges in late bloom. The strain tolerates some nutrient stress and light variations better than many modern hybrids, reflecting its landrace ancestry Anecdote. Outdoor cultivation is possible in warm, dry climates with a long growing season (Mediterranean, southern California, southern Europe) but requires pest management and disease prevention Anecdote.

Marketing vs. Reality

Haze #27 occupies a niche market where reality and marketing often blur. Because it lacks a recognized official seed bank and has not been subjected to commercial branding, many of the extravagant claims made about other strains do not apply. However, online seed vendors and grow forums do invoke its name as a marker of 'Old School Dutch Genetics' and 'Pure Sativa Genetics,' language that carries nostalgic and credibility associations without factual grounding Anecdote. The lineage dispute is real; sellers cannot agree on its parentage, yet this uncertainty is often glossed over Disputed. Some vendors claim Haze #27 is ideal for medical use (ADHD, depression), but no peer-reviewed evidence supports strain-specific medical claims No data. The lengthy flowering time (10–12 weeks) is sometimes marketed as a feature ('Old Haze genetics take time to express'), but it is primarily a cultivation drawback that has led most modern breeders to shorten it. Growers should expect genetic stability to be moderate at best and should source seeds from reputable breeders if genetics matter to their operation.

Sources

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