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Jack Flash
Feminized
Jack Flash delivers clear energy with a citrus and pine profile. It tests around 18-22% THC and has low CBD. You will grow a medium-tall plant that responds well to training. MasterSeeds lists it for growers who want daytime clarity and reliable yields.
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STRAIN PROFILE
Complete Cannabis Strain Specifications
| Trait | Value |
|---|---|
| Type | Sativa-dominant hybrid |
| THC | 18-22% |
| CBD | 0.3-1% |
| Grow Difficulty | Intermediate |
| Flowering Time | 8-10 |
| Yield | 450-600 g/m2 indoor; 400-800 g/plant outdoor |
| Height | 80-150 cm |
| Environment | Indoor and Outdoor |
| Effects | Uplifting, Focused, Energetic |
| Flavors | Citrus, Pine, Spicy |
| Genetics | Jack Herer x Super Skunk |
| Climate | Temperate to Mediterranean (suits BC and Ontario summers) |
Jack Flash Strain Information and Characteristics
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Strain Type:
Jack Flash is a sativa-dominant hybrid with energetic lift. Canadian growers call it a daytime variety for social use.
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THC Content:
Jack Flash typically tests high for THC, often near 18-22%. This level sits above many strains sold in Canada such as Blue Dream.
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CBD Content:
Jack Flash has low CBD levels around 0.3-1%. Low CBD makes it suited for recreational use while some medical patients seek alternatives with higher CBD.
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Grow Difficulty:
Growing Jack Flash requires intermediate skills. Canadian growers often adjust ventilation and light cycles for local conditions.
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Flowering Time:
Flowering runs about 8 to 10 weeks indoors. Outdoor growers in Canada usually harvest from late September to early October.
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Expected Yield:
Indoor yields average 450-600 g/m2 under good lights. Outdoor plants reach 400-800 g per plant in strong summer regions like BC.
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Plant Height:
Plants stay medium to tall, 80-150 cm indoors. Outdoor height extends further and needs space in Canadian yards.
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Growing Environment:
Jack Flash grows well indoors and outdoors. You should train plants indoors or place them in sunny spots in Ontario and BC.
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Expected Effects:
You get an uplifting, focused buzz for daytime tasks. Many Canadian consumers prefer Jack Flash for energy and creativity.
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Genetic Lineage:
Jack Flash descends from Jack Herer x Super Skunk. Breeders crossed Jack Herer x Super Skunk to form this hybrid.
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Seed Type:
These seeds come feminized for reliable flower production. You will find them sold through Canadian seed banks with clear labeling.
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Preferred Climate:
Jack Flash prefers temperate and Mediterranean climates. It handles warm Ontario summers and coastal BC conditions but needs frost-free seasons in the prairies.
Frequently Ask Questions
Everything you need to know about this strain.
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Questions & Answers
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Q: How do I prevent stretching?
A: Lower light height and use LST to keep nodes compact.
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Q: Should I top or FIM?
A: Top for predictable colas and FIM for more branches. Choose based on your canopy space.
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Q: What pH works for soil?
A: Keep soil pH between 6.0 and 6.8. Test runoff regularly.
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Q: How much night temperature drop is safe?
A: Keep an 8-10 C difference between day and night. Avoid swings that stress buds.
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Q: When should I flush?
A: Flush during the last 1-2 weeks of flower for cleaner taste. Monitor plant health during the flush.
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