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Knockout

Feminised

Knockout is an indica-dominant hybrid with resinous buds and a relaxed yet focused effect.

Why choose Knockout?
  • Compact, resinous buds for greenhouse growers
  • Reliable THC levels with smooth citrus-pine notes
  • Performs well in managed UK climates
THC 18-22%
CBD <1%
Lineage Northern Lights x Skunk
Genotype Indica-dominant hybrid
Difficulty Intermediate
Flowering 8-10 weeks
Height Medium, bushy
Yield Medium-high (up to 450 g/m² indoors)
Taste Citrus, Earthy pine, Subtle spice
Seed Type Feminised
Climate humid greenhouse conditions
Effects Relaxing body stone, Gentle cerebral lift, Calm focus
Environment Indoor/Outdoor

About Knockout

Knockout combines Northern Lights x Skunk lineage into an indica-leaning hybrid that produces dense, aromatic flowers. It offers reliable THC levels around 18–22% with low CBD, making it suitable for those seeking relaxing body effects alongside a gentle cerebral lift. The plant stays medium and bushy, responding well to training and performing in both greenhouse and outdoor settings where humidity is managed. In the UK, growers in Aberdeen have success when ventilation and moisture control are prioritised to prevent mould.

Grow Difficulty:

Under humid greenhouse conditions Knockout needs careful ventilation and routine checks to prevent mould. It rewards growers with moderate experience who can manage humidity and airflow.

Flowering Time:

Flowering usually completes in eight to ten weeks depending on phenotype and environment. Some phenotypes finish at the earlier end with consistent light and nutrition.

Yield:

Yields are medium to high with proper canopy management and feeding, reaching around 400–450 g/m² indoors in skilled hands. Outdoor harvests in a good season can match indoor weights per plant when trained correctly.

Height:

Plants remain a medium, bushy structure with strong lateral branching. They respond well to low-stress training and topping to increase bud sites.

Environment:

In Aberdeen, Knockout performs well both indoors and outdoors when summer conditions allow. Growers in Aberdeen should protect outdoor plants from prolonged wet spells and consider greenhouse options to control humidity.

Climate:

Growing Knockout in Aberdeen benefits from a humid greenhouse where temperature and moisture can be stabilised. In Aberdeen humid greenhouse conditions allow earlier harvests and lower mould risk when ventilation and dehumidification are used.

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
What's the best way to train Knockout?
A
Verified answer
Low-stress training and topping work well to open the canopy and increase bud sites without shocking the plant.
Common question Posted by Urbanseedbank Answered
Q
How often should I water in a humid greenhouse?
A
Verified answer
Water according to substrate dryness rather than a fixed schedule; in humid conditions evaporation is lower so water less frequently but monitor root zone moisture.
Common question Posted by Urbanseedbank Answered
Q
When do I start bloom nutrients?
A
Verified answer
Switch to bloom nutrients at the first signs of pistils after your 8–10 week veg period, or as you flip the light cycle indoors.
Common question Posted by Urbanseedbank Answered
Q
Do I need a dehumidifier?
A
Verified answer
In a humid greenhouse a dehumidifier or improved ventilation will reduce mould risk and improve bud density.
Common question Posted by Urbanseedbank Answered
Q
What flush additives work well?
A
Verified answer
Simple plain water flushes are effective; some growers use low-ppm flush products to chelate excess salts before harvest.

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