Kees’ Old School Haze Regular – Super Sativa Seed Club

Kees’ Old School Haze Regular (Pure Sativa) – Super Sativa Seed Club

Kees’ Old School Haze Regular by Super Sativa Seed Club (SSSC) is not just a cannabis variety, but a true agronomic time portal. This genetics represents the absolute purity of the original Haze from the 1980s, preserved untouched for over thirty-five years by Karel Schelfhout and his private team.

Devoid of any modern crosses with commercial indicas aimed at artificially increasing weight or reducing flowering times, this pure regular line is dedicated exclusively to the most ambitious breeders, collectors, and old-school purists who wish to work with virgin genetic material of unparalleled phylogenetic nobility.

It develops a monumental, vine-like, and wild structure, with a vegetative plane growing at a dizzying pace. It displays long, thin branches, widely distant internodes, and fan leaves with extremely thin, almost filiform fingers, engineered for warm equatorial latitudes. Being regular seeds, these plants show overwhelming biological vigor and unique metabolic elasticity.

It is the choice of excellence for those wishing to isolate elite mother and father plants to create new hybrids, bringing that electric psychedelic drive and pure incense flavor that made Amsterdam’s coffeeshop scene immortal.

Kees’ Old School Haze Regular in brief

This pure sativa demands respect and patience, requiring an indoor flowering window between 12 and 14 weeks (84-98 days) to complete flawless maturation. Indoors, under an experienced hand and intense lighting systems, it guarantees massive commercial yields estimated between 500 and 600g/m². It is optimized primarily for large-scale indoor and greenhouse cultivation.

Biochemically, THC levels are exceptionally high, consistently fluctuating between 20% and 25%, delivering an entirely cerebral impact. Post-switch vertical elongation is titanic, capable of tripling or quadrupling the initial size of the vegetative phase. The olfactory profile is aristocratic, deep, and penetrating: dominated by notes of ancient incense, sandalwood, musk, and sour lemon.

Technical Sheet

• Genetics: Original Unaltered Old School Haze (Preserved Lineage).
• Type: 100% Pure Sativa.
• Flowering: 12-14 weeks (84-98 days).
• Harvest: Early-to-Mid November (Greenhouse).
• Height: Over 150-180 cm (Indoor) / over 300 cm (Greenhouse/Outdoor).
• Cannabinoids: THC 20-25%, very low CBD (<0.2%).
• Terpenes: Terpinolene, Beta-Caryophyllene, Limonene, Pinene.
• Yield: 500-600g/m² (Indoor / Greenhouse).
• Techniques: Intensive SCROG, Continuous super-cropping, LST, 12/12 from seed.
• Extracts: Golden, ultra-fine, elixir return in Water Hash and dry-sifting for pure active cannabinoids.

Cultural Management (Indoor and Greenhouse)

Indoors, Kees’ Old School Haze is an exuberant genetics that tests the grower’s skills. Managing vertical space is the primary agronomic challenge. The post-switch stretch is prolonged and vigorous; applying an intensive SCROG technique or continuous super-cropping across the branch plane is mandatory to distribute light evenly and tame the apical zone. Many professionals choose to run them directly under a 12/12 photoperiod from seed to limit structural development.

Nutrient absorption is sober and delicate: it dislikes heavy nitrogen loads, preferring a light organic diet with a maximum EC of 1.3-1.4 at peak flowering, supported by a VPD of 1.3-1.5 kPa.

In greenhouses or open fields (only in stable Mediterranean or tropical climates), this variety expresses its full biological exuberance. It builds an immense, filiform root platform requiring large pots (over 50 liters) or open ground.

The structurally airy, elongated, and thin conformation of its spear-shaped buds allows for perfect airflow within the dense aerial mass, granting it fantastic natural resistance to botrytis and autumn molds. However, flowering continues until mid-November; in northern European regions, using a heated, ventilated greenhouse is indispensable to finish the cycle without frost trauma. Using structurally robust mechanical stakes is mandatory.

Terpene Profile and Effect

The organoleptic cheesecake of Kees’ Old School Haze is the very essence of cannabis history. During advanced flowering, the grow room is saturated by a penetrating, resinous, and balsamic scent dominated by cathedral incense, ancient cedar wood, and wild musk, refreshed by warm notes of sour lemon and a characteristic metallic nuance. On the palate, the smoke is light, ultra-fine, and leaves a lingering balsamic aftertaste that clears the mouth.

With a THC level approaching 25%, the effect is a pure psychoactive experience, devastating and free of physical crashes. It instantly triggers a surge of pure cerebral euphoria, cognitive clarity, and psychedelic energy. It lifts the spirit to stratospheric levels, accelerates thought flow, and stimulates creativity and talkativeness, proving to be the ultimate daytime and artistic variety. It brings no bodily muscle relaxation, leaving the consumer active and electrified.

Strain Comparisons

Kees’ Old School Haze vs Silver Haze

Silver Haze introduces indica genes via Northern Lights, offering more compact buds, faster flowerings, and a physical relaxation at the end. Kees’ Old School Haze remains true to 100% sativa purity, offering an infinitely cleaner, more psychedelic, and electric mental stimulation and a significantly deeper, more ancient incense flavor.

Kees’ Old School Haze vs Creeper Regular

Both are pure regular sativas for collectors, but Creeper shows fresher, more citrusy and tropical aromatic nuances (lemon/mango). Kees’ Old School Haze proposes a strictly darker, more resinous profile oriented toward incense and sandalwood, with a slightly more pronounced vertical stretch indoors.

Growers FAQ’S

Being regular seeds, how do I manage the sex of the plants?

It is necessary to carefully monitor the nodes in the apical zone during the first two weeks after switching to 12/12. Males develop small clusters of smooth spheres (pollen sacs), while females produce tear-shaped calyxes with two hair-like white pistils. Isolate males promptly to avoid accidental pollination of females.

What is the ideal photoperiod to contain its height?

We recommend starting indoor plants directly at 12 hours of light and 12 of darkness from seed, or granting a maximum of 5-7 days of vegetative growth before the switch to prevent the aerial mass from outgrowing the grow room space.

How long should the root flush last?

Given the delicate nature of the plant and the length of the cycle, a deep and thorough root flush of at least 18-21 days with pH-controlled water only is recommended to allow the incense terpenes to express themselves without harshness.

Annibale Seedshop’s Opinion

Kees’ Old School Haze Regular by Super Sativa Seed Club is an authentic treasure of cannabis archaeology. Our team highly recommends it to experienced breeders and purists wishing to try genetic selection on original Haze unaltered by modern breeding. A proud, demanding, and majestic plant, capable of delivering an elite cerebral euphoria hard to find on the modern commercial market.