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Black Tuna

Feminised

Black Tuna is an indica-dominant hybrid with dense, dark buds and a bold earthy-blackberry aroma.

Why choose Black Tuna?
  • Dense, dark buds with a sharp blackberry note
  • Compact growth ideal for limited spaces
  • Reliable resin production for extracts
THC 18-22%
CBD ≤1%
Lineage Black Tuna x Northern Lights
Genotype Indica-dominant hybrid
Difficulty Moderate
Flowering 8-10 weeks
Height Short to medium
Yield Moderate
Taste earthy, blackberry, diesel
Seed Type Feminised
Climate Cool Northern Summers
Effects calming, mood-lifting, soporific
Environment Indoor and outdoor

About Black Tuna

Black Tuna is an indica-dominant hybrid prized for compact growth, resin production and a distinct earthy and blackberry flavour. It performs well indoors with controlled environments and can finish outdoors in milder UK locations when protected from late-season damp.

Grow Difficulty:

Growing Black Tuna is moderately demanding and benefits from steady environmental control in cooler regions. It copes with cool northern summers but outdoor crops need careful timing and protection.

Flowering Time:

Flowering commonly takes eight to ten weeks under good conditions. Growers in variable climates should allow for the longer end of that range.

Yield:

Yields are moderate and consistent when plants receive stable light and nutrients. Indoor producers can increase harvests with training and canopy control.

Height:

Plants remain relatively compact with short internodes and a bushy profile. That structure suits limited spaces and controlled environments.

Environment:

Indoors Black Tuna responds well to controlled light cycles, ventilation and humidity management. Outdoors in Dorset it can finish but late-season damp and cooler nights require attention.

Climate:

In Dorset with its cool northern summers Black Tuna needs careful scheduling to avoid autumn rain and low light. Using sheltered outdoor sites or finishing under cover will improve bud development and reduce mould risk.

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
My plants are yellowing in week two of flower, what now?
A
Verified answer
Check pH and watering first, then reduce nitrogen and ensure calcium and magnesium levels are adequate before making big changes.
Common question Posted by Urbanseedbank Answered
Q
I have limited headroom indoors, will Black Tuna fit?
A
Verified answer
Yes, its short-to-medium height suits low-ceiling rooms but use topping and LST to control vertical growth further.
Common question Posted by Urbanseedbank Answered
Q
How do I finish outdoors in Dorset without mould?
A
Verified answer
Move plants under a lean-to or polytunnel for the final weeks or use resinous strains planting earlier to finish before autumn rains arrive.
Common question Posted by Urbanseedbank Answered
Q
Should I defoliate during flowering?
A
Verified answer
Selective defoliation around week two to four of flower can improve airflow and light to bud sites, avoid heavy removal late in bloom.
Common question Posted by Urbanseedbank Answered
Q
What trimming method preserves potency?
A
Verified answer
Trim gently and cure slowly; manicuring too tightly can remove trichome-rich sugar leaves so keep a light trim until after drying.

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