Q
My buds are showing white mould near the top, what now?
A
Increase ventilation immediately, lower humidity and remove affected buds; consider a fungicide for severe cases and improve airflow next season.
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- Bright, focused sativa energy for daytime use
Jack Flash
Feminised
Jack Flash is a sativa-dominant hybrid that delivers a clear, uplifting high with citrus and spicy notes.
Why choose Jack Flash?
- Bright citrus spark with focused clarity
- Performs well with training and ventilation
- Reliable daytime strain for creative tasks
THC |
18-22% |
CBD |
Low (<1%) |
Lineage |
Jack Herer x Super Silver Haze |
Genotype |
Sativa-dominant hybrid |
Difficulty |
Moderate |
Flowering |
8-10 weeks |
Height |
Medium-tall |
Yield |
Medium to high |
Taste |
Citrus, Earthy, Spicy |
Seed Type |
Feminised |
Climate |
Cool northern summers |
Effects |
Energetic, Uplifting, Creative |
Environment |
Indoor and outdoor |
About Jack Flash
Jack Flash combines sativa vigour with manageable growth habits to offer an energetic, focused high and bright citrus-forward flavours. In cool coastal climates like Brighton it rewards attentive ventilation and training to avoid damp-related issues.
Grow Difficulty:
Under cool northern summers Jack Flash needs attentive care to avoid slowed development and mould issues. It is moderately challenging and rewards growers who manage ventilation and feeding precisely.
Flowering Time:
Flowering normally completes in eight to ten weeks indoors with stable lights and nutrients. Outdoor plants in the UK typically finish late September to early October if weather remains fair.
Yield:
Indoor yields are medium to high when plants are trained and fed correctly. Outdoor harvests can be generous in sheltered sites but may be reduced by damp or chilly weather.
Height:
Plants form a medium-tall structure with long internodes and pronounced colas. Training techniques such as topping and low-stress training help control stretch and improve bud sites.
Environment:
Jack Flash performs well both indoors and outdoors in Brighton when given proper shelter. Many Brighton growers choose indoor grows to control humidity and avoid unpredictable late-season rain.
Climate:
Growing Jack Flash in Brighton with cool northern summers requires active humidity control to limit mould and bud rot. Using good airflow, raised beds or pots and timely sheltering will help the plants ripen in Brighton's cooler conditions.
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
£8.00 / seed • You save £13.33
100% Satisfaction Guarantee • Secured Payments