
Super Silver Haze Feminized
Super Silver Haze Feminized — sativa cannabis seeds suited to UK growing conditions. 25% THC with focused, energetic, calm effects. Fast, discreet UK delivery.
About Super Silver Haze Feminized
Germination & Early Veg (Days 1-14): Super Silver Haze seeds typically crack within 48 hours using the damp paper towel method and break soil by around day 3. Early growth was rapid and upright — narrow first leaves reaching eagerly towards the light from day one. By the end of week two, five nodes were visible with noticeable spacing between each, signalling the sativa-dominant growth pattern ahead. Damping off is uncommon at around 70% relative humidity during this phase.
Vegetative Growth (Weeks 3-6): Vertical growth demanded attention. Even with low-stress training started in week 3, this plant wanted to climb. We bent the main stem at a 90-degree angle in week 4 and the secondary branches quickly caught up, creating a naturally flat canopy by week 6.
Flower (Weeks 1-11): This is where the 6/94 genetics of Super Silver Haze truly revealed itself. The terpinolene aroma appeared in week 3 of flower and intensified steadily. Trichome coverage became visually striking from week 5 onward. Final indoor yield: up to 800 g/m2. THC testing at 25%. Difficulty rating: intermediate.
Continuing the Grow Diary
Mid-Flower (Weeks 4-6): The transformation accelerated dramatically. Bud sites that were wispy clusters at week 3 swelled into properly defined colas. The elongated bud structure continued developing lengthwise, with fresh calyxes stacking along the main stems. Interestingly, the secondary branches produced proportionally larger buds than expected — the open structure allowed light to reach lower sites that a bushier plant would have shaded out entirely.
Late Flower and Ripening (Weeks 9-11): Nutrient input dropped to plain water with a splash of molasses for the final 10 days. The terpinolene aroma became powerful enough that carbon filtration was essential — our neighbours would have noticed otherwise. Trichomes progressed from clear to milky across the final fortnight, with amber heads appearing on sugar leaves first. A common harvest window is around 15% amber on the calyxes.
Dry and Cure (Post-Harvest): Whole-plant hang dry in a darkened room at 17°C and 58% humidity for 12 days. Stems snapped cleanly rather than bending, confirming the moisture content was appropriate for jarring. After 4 weeks of glass jar curing with twice-daily burping (first 2 weeks) then daily burping (weeks 3-4), the bouquet fully developed. Final weight confirmed the up to 800 g/m2 yield estimate. The limonene secondary terpene became far more pronounced after curing than it was at harvest — a reminder that the drying and curing process genuinely creates flavour rather than merely preserving it.
Flowering: 10-11 weeks. Indoor yield: up to 800 g/m2. Outdoor yield: 1500 g/plant. Rated intermediate difficulty. Feminised seeds.
What to Expect When Using Super Silver Haze
UK customers report focused, energetic, calm as the defining characteristics, and our experience aligns with that consensus. At 25% THC, this sativa sits in a potency bracket where most users find a productive sweet spot. Vaporised at 175-185°C, the initial effect is a noticeable uplift in mood and mental energy that pairs well with creative projects, long walks, or an afternoon with friends. The body remains light and mobile throughout, making this a genuine daytime option for those with THC tolerance. The Terpinolene/Limonene terpene combination imparts a flavour that lingers on the palate — complex and shifting, revealing new notes across the session.
Ideal settings: creative pursuits, social gatherings, outdoor adventures, and daytime leisure.
Terpene Breakdown
Primary: Terpinolene · Secondary: Limonene · Tertiary: Ocimene. Flavour translation from flower to vapour and smoke differs with this terpene combination. Low-temperature vaporisation (180-188°C) highlights the limonene and ocimene notes whilst keeping terpinolene as a foundation. Higher temperatures or combustion flatten the profile into a single-note experience — still pleasant, but lacking the complexity that makes this cultivar genuinely interesting to those who appreciate flavour.
Suitability and Recommendations
Super Silver Haze suits growers with fundamental skills already established. You should understand pH management, basic nutrient ratios, and light cycle requirements before committing to this cultivar — it will not hold your hand, but it will not punish minor mistakes harshly either. Photoperiod genetics give you complete control over plant size and harvest timing — extend the vegetative phase for larger plants or flip early for a quicker turnaround in compact spaces. The UK growing season (April through October) accommodates the 10-11 weeks bloom period comfortably for outdoor cultivators across the country. Shipped discreetly across the UK with our germination guarantee.
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Super Silver Haze Feminized — Breeder Information
Royal King GeneticsBred and stabilised in-house by Royal King Genetics — our internal breeding team. Every batch is QC'd and germ-tested above 99% before it ships. Read the full breeding process and about page.
A heritage cultivar that we have taken through five rounds of inbred selection. The 1990s landrace-derived reference profile — terpene fingerprint, finishing window, plant frame — has been welded into the population. Every seed in the pack carries the trait set that put Super Silver Haze on the map.
Pin down the original 1990s landrace-derived terpene profile in modern seed form.
Chosen for vigour, manageable stretch and the cerebral terpene profile sativa growers buy this strain for.
Royal King Genetics in-house breeder room — pollen taken from a generation-tracked sibling-male line.