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Superfast Jellyfish

Feminised

Superfast Jellyfish is a fast-flowering sativa-dominant hybrid that suits greenhouse and controlled indoor grows.

Why choose Superfast Jellyfish?
  • Rapid finish with sativa clarity
  • Handles greenhouse production when ventilated
  • Compact canopy, high-quality buds
THC 18-22%
CBD <1%
Lineage Super Silver Haze x Jellyfish
Genotype Sativa-dominant hybrid
Difficulty Intermediate
Flowering 8-9 weeks
Height 80-130 cm indoors; taller outdoors
Yield Medium-High (up to 500 g/m² in greenhouse)
Taste Citrus, Sweet, Skunky
Seed Type Feminised
Climate Humid greenhouse environments
Effects Uplifting, Focused, Relaxed
Environment 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.

Grow Difficulty:

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 Time:

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:

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.

Height:

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.

Environment:

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.

Climate:

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.

Frequently Asked Questions

Common questions about this strain, covering growth, effects, and suitability for UK conditions.

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Choose seed quantity
Selected: 5 Seeds
£53.33 £40.00
£8.00 / seed • You save £13.33
Accepted payment methods
100% Satisfaction Guarantee • Secured Payments
Urbanseedbank Support

Questions & Answers

Customer questions and answers from the Urbanseedbank team. Submit your own question and we’ll respond after review.

5 questions Answered posts are shown first.
Common question Posted by Urbanseedbank Answered
Q
Any quick tips to avoid bud rot late in flower?
A
Verified answer
Increase ventilation, lower humidity, and remove inner leaves that trap moisture.
Common question Posted by Urbanseedbank Answered
Q
Which net height works best for SCROG?
A
Verified answer
Set the net about 20–25 cm above the pots to allow plants to fill the screen evenly.
Common question Posted by Urbanseedbank Answered
Q
How many plants per square metre would you run?
A
Verified answer
Four to six plants per m² under a screen usually balances canopy density and airflow.
Common question Posted by Urbanseedbank Answered
Q
When should I cut back nitrogen?
A
Verified answer
Reduce nitrogen and switch to higher phosphorus and potassium as bud swell begins in week three of flowering.
Common question Posted by Urbanseedbank Answered
Q
Any suggestions for speeding finish without losing terpene quality?
A
Verified answer
Maintain stable temperatures, avoid nutrient swings and use gentle drying to preserve terpenes while keeping finish time tight.

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