
- Fast-flowering sativa clarity for compact and greenhouse grows
Superfast Jellyfish
Superfast Jellyfish is a fast-flowering sativa-dominant hybrid that suits greenhouse and controlled indoor grows.
- Rapid finish with sativa clarity
- Handles greenhouse production when ventilated
- Compact canopy, high-quality buds
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18-22% |
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<1% |
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Super Silver Haze x Jellyfish |
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Sativa-dominant hybrid |
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Intermediate |
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8-9 weeks |
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80-130 cm indoors; taller outdoors |
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Medium-High (up to 500 g/m² in greenhouse) |
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Citrus, Sweet, Skunky |
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Feminised |
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Humid greenhouse environments |
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Uplifting, Focused, Relaxed |
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Indoor and greenhouse, performs well in controlled environments |
About Superfast Jellyfish
Superfast Jellyfish combines quick finishing genetics with clear, uplifted effects and a citrus-forward terpene profile. It performs well in humid greenhouse environments when ventilated correctly and rewards growers who manage humidity, airflow and canopy structure for dense, aromatic buds.
Superfast Jellyfish is a sativa-dominant hybrid with a clear, fast-acting profile. The buds are airy and elongated, showing sativa structure and lively terpenes.
THC levels commonly sit between 18% and 22%, delivering a pronounced but manageable potency. Some phenotypes can test slightly higher under optimised conditions.
CBD content is low, typically below 1%, so this strain is not chosen for high-CBD needs. It is primarily valued for its psychoactive clarity rather than therapeutic CBD.
Superfast Jellyfish derives from a cross between Super Silver Haze and Jellyfish. The pairing combines sativa clarity with an unusual terpene profile.
Seeds are commonly offered as feminised to simplify cultivation planning and eliminate male plants. Some breeders also produce regular or autoflower variants for specific grow styles.
This strain rates as intermediate and benefits from vigilant care in humid greenhouse environments. Growers need to manage airflow and humidity to prevent mould and keep the canopy healthy.
Flowering usually completes in eight to nine weeks under steady light cycles. A few phenos may require an extra week in cooler or lower-light conditions.
Yield potential is medium to high when plants receive consistent nutrients and pest control. Well-managed greenhouse environments often push production higher than basic indoor tents.
Plants stay medium in height with a bushy, conical structure that suits screen-of-green or low-stress training. Expect final indoor heights around 80 to 130 cm depending on training.
Indoors, Superfast Jellyfish responds well to screen-of-green and canopy control in Warwickshire. Outdoors in Warwickshire it favours a sheltered greenhouse or a warm, sunny wall to reduce mould risk.
In Warwickshire's humid greenhouse environments growers should prioritise dehumidification and strong airflow to prevent bud rot. Steady ventilation and a modest day–night temperature swing help maintain bud density and terpene development in Warwickshire.
The high begins with a clear mental uplift and improved focus, suitable for daytime tasks. A mild body relaxation follows that does not generally induce heavy sedation.
The flavour blends citrus zest with sweet resin and a faint skunky undercurrent. Smoke is typically smooth with a tangy, lingering finish.
Frequently Asked Questions
Common questions about this strain, covering growth, effects, and suitability for UK conditions.
Expect around 18–22% THC depending on phenotype and grow conditions.
Flowering typically takes eight to nine weeks with stable light and feeding schedules.
It is better suited to growers with some experience due to humidity and mould management needs.
Yes, but place plants in a sheltered, sun-facing site or in a greenhouse to reduce mould risk.
Moderate feeding with a slight increase in phosphorus and potassium during flowering promotes bud set and density.
Maintain good airflow, avoid excessive late-season humidity and remove dense inner foliage to improve drying.
LST and SCROG are effective to spread the canopy and improve light penetration for better yields.
In humid greenhouse environments a dehumidifier or strong ventilation is highly recommended to reduce rot risk.
It adapts well to small indoor cannabis grow spaces when kept compact with training and strict humidity control.
Feminised seeds simplify crops for limited-space grows and reduce the chance of males appearing in the canopy.
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