Haze (Cannabis Strain) — Strainpedia
Haze is one of the most historically significant Sativa cultivars in modern cannabis breeding. Emerging in the 1960s–1970s era of early hybrid experimentation, Haze became the structural and aromatic blueprint for countless Sativa-dominant strains that followed. Known for its tall, elongated flower structure, extended flowering time, and bright cerebral profile, Haze represents a pivotal bridge between tropical landrace genetics and modern stabilized hybrids. Its influence remains deeply embedded in global breeding programs, earning it a permanent place in the Foundational Genetics category.
Quick Facts
| Genetics | Multi-landrace Sativa heritage (commonly Colombian × Mexican × Thai × South Indian influences) |
|---|---|
| Breeder | Early California preservation and hybrid development (1970s) |
| Variety | Pure / Near-Pure Sativa |
| Flowering Time | 10–14 weeks (long flowering Sativa expression) |
| Yield Potential | 400–600 g/m² (requires canopy management) |
| Plant Height | 150–300 cm; significant vertical growth |
| Climate Preference | Warm, sunny climates with long growing seasons |
| Difficulty | Advanced (long flower cycle and height control required) |
Scientific & Botanical Overview
Haze expresses classic equatorial Sativa morphology: narrow leaflets, elongated internodal spacing, and tall spear-shaped colas. During early flowering, plants often exhibit dramatic vertical stretch before transitioning into airy yet resinous flower clusters.
Unlike compact Indica cultivars, Haze produces looser bud formations with extended calyx stacking along vertical branches. This structure promotes airflow but demands environmental control indoors. Its long flowering time reflects its tropical ancestry and remains one of its defining characteristics.
Effects & Use-Cases (Reported)
- Commonly reported effects: cerebral uplift, enhanced creativity, heightened sensory perception.
- Use-case context: daytime sessions, artistic work, social and intellectual engagement.
- Functional profile: gradual onset with sustained mental clarity and minimal heavy sedation.
- Note: Observational reports only; not medical claims.
Aroma & Flavors
- Aroma: spicy citrus, herbal sweetness, subtle earthy undertones.
- Flavor: bright citrus-spice inhale with light floral and herbal finish.
- Signature finish: lingering sweet spice with tropical brightness.
- Terpene associations: terpinolene, pinene, caryophyllene (phenotype-dependent).
Tested Cannabinoid & Terpene Ranges
| Compound | Typical Range* | Notes |
|---|---|---|
| Δ⁹-THC | ~16–22% | Moderate-to-high potency with cerebral emphasis. |
| CBD | <1% | Generally trace levels. |
| Terpinolene | Moderate–High | Often dominant; associated with bright, energetic character. |
| Pinene | Moderate | Contributes fresh herbal sharpness. |
| Caryophyllene | Low–Moderate | Adds subtle spice depth. |
| Terpene Profile | Citrus / Sweet Spice / Herbal | Classic Sativa aromatic signature. |
*Ranges vary depending on phenotype, cultivation practices, harvest timing, curing conditions, and laboratory analysis.
Cultivation Notes
- Light Cycle: 18/6 vegetative; 12/12 flowering
- Stretch: Significant vertical growth during early flower
- Humidity Targets: 45–55% during flowering
- Training: ScrOG or topping recommended to control canopy height
- Harvest Window: Late October outdoors (Northern Hemisphere)
Grower Notes (Week-by-Week Snapshot)
- Weeks 1–3: Strong vertical stretch; establish support structure.
- Weeks 4–6: Flower sites elongate; aroma intensifies.
- Weeks 7–10: Resin production increases; spear-shaped colas develop.
- Weeks 11–14: Extended ripening phase; monitor trichome clarity.
- Post-Harvest: Slow cure recommended to preserve bright terpene expression.
Genetic Lineage
Haze is widely described as a multi-landrace Sativa hybrid combining Colombian, Mexican, Thai, and South Indian genetic influences. This global heritage contributed to its elongated structure, extended flowering cycle, and complex terpene profile. Many modern Sativa-dominant cultivars trace lineage back to Haze-based breeding projects.
Research Insights
Haze remains a key reference strain in discussions of long-flowering Sativa morphology and terpene-driven cerebral stimulation. Its dominance of terpinolene and related aromatic compounds illustrates how pre-modern hybrid cultivars expressed bright, energetic profiles before the diesel era reshaped breeding priorities.
Why Haze Is “Foundational Genetics”
Haze established the structural and aromatic template for Sativa-dominant breeding worldwide. Its influence on countless hybrids—including modern “Super Haze” and citrus-forward strains—cemented its role as a cornerstone of cannabis genetic history. Few cultivars have shaped the direction of Sativa breeding at the scale Haze achieved.
Frequently Asked Questions
Is Haze a pure Sativa?
Haze is generally classified as a pure or near-pure Sativa derived from multiple landrace sources.
Why does Haze take longer to flower?
Its tropical landrace ancestry contributes to its extended flowering cycle compared to compact Indica strains.
Is Haze difficult to grow?
It can be more challenging due to height and long flowering time, making it better suited for experienced growers.
Why is Haze important historically?
It shaped modern Sativa breeding and influenced countless hybrid cultivars worldwide.
Educational Disclaimer: This page is provided for scientific and horticultural reference only and does not constitute medical or promotional advice. Cannabis cultivation, possession, and use are regulated by local laws. Always comply with applicable legislation in your region.
