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C4

Feminised

C4 is a compact hybrid well suited to humid greenhouse environments and small indoor grows.

Why choose C4?
  • Compact plants with a diesel-citrus profile
  • Reliable mid-range THC and clear-headed effects
  • Performs well in controlled humid greenhouse environments
THC 18-22%
CBD 0.5-1%
Lineage Chemdawg x Skunk
Genotype Hybrid
Difficulty Intermediate
Flowering 8-9 weeks
Height Medium, 60-100 cm
Yield 400-500 g/m2
Taste diesel, earthy, citrus
Seed Type Feminised
Climate Humid Greenhouse Environments
Effects uplifting, focused, mild relaxation
Environment Indoor and outdoor

About C4

C4 is a practical hybrid bred for manageable height and a steady, clear-headed effect. It performs well in controlled greenhouse setups and adapts to small indoor spaces with correct ventilation. The variety delivers diesel and citrus flavours with THC in the high teens to low twenties and a low CBD presence. Growers should focus on humidity control and airflow in humid greenhouse environments to avoid mould and maximise yield. C4 responds to standard training techniques and rewards steady nutrients during an eight to nine week flowering period, producing moderate to generous harvests when managed carefully.

Grow Difficulty:

C4 is best described as intermediate in difficulty when grown in humid greenhouse environments. It needs careful humidity control and regular leaf inspection to avoid mould in those conditions.

Flowering Time:

Flowering usually completes in eight to nine weeks under stable conditions. Proper nutrient management during this period improves bud density and aroma.

Yield:

Yields are moderate to generous for a medium-height plant, averaging 400–500 g/m2 indoors. With good climate control outdoors the crop can also be productive on a per-plant basis.

Height:

Plants remain compact with a single dominant cola and sturdy side branches. Expect final heights commonly between 60 and 100 centimetres under controlled light.

Environment:

Indoors C4 adapts well to small rooms and purpose-built tents in Oxford where vertical space is limited. Outdoors it performs respectably near Oxford in sheltered spots provided pests and moisture are managed.

Climate:

Growing C4 in Oxford calls for attention to humid greenhouse environments, especially during flowering. Good ventilation and dehumidification are essential to prevent mould and preserve terpene quality.

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 greenhouse in Oxford gets humid in summer, will C4 survive?
A
Verified answer
Yes, but you must boost ventilation and use a dehumidifier during peak humidity to keep mould at bay.
Common question Posted by Urbanseedbank Answered
Q
How many plants per square metre should I run indoors?
A
Verified answer
For C4 a common approach is four plants per square metre using training to maximise canopy and airflow.
Common question Posted by Urbanseedbank Answered
Q
Should I foliar feed during flowering?
A
Verified answer
Avoid foliar feeding in late flowering in humid conditions; it raises mould risk and offers limited benefit.
Common question Posted by Urbanseedbank Answered
Q
What is the best way to dry C4 after harvest?
A
Verified answer
Dry slowly in a cool, dark room at 45–55% relative humidity with gentle airflow to protect terpene aromas.
Common question Posted by Urbanseedbank Answered
Q
Do C4 plants need CO2 supplementation indoors?
A
Verified answer
CO2 helps under very intense light, but most small indoor setups in Oxford will see better returns from optimising ventilation and light before adding CO2.

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