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Chemex

Feminised

Chemex is a sativa-dominant hybrid with diesel and lemon notes that delivers clear, focused energy and moderate yields in cool gardens.

Why choose Chemex?
  • Sharp diesel and citrus terps for a clear, productive high
  • Structure and timing that suit cool temperate gardens
  • Responds well to training and careful late season protection
THC 18-22%
CBD <1%
Lineage Chemdawg x Lemon Skunk
Genotype Sativa-dominant hybrid
Difficulty Intermediate
Flowering 8-10 weeks
Height Medium-tall, typically 1 to 2 metres outdoors
Yield Medium to high (indoor ~350-450 g/m²; outdoor variable)
Taste diesel, lemon citrus, earthy pine
Seed Type Feminised
Climate Cool, wet, temperate; performs well among cool climate cannabis strains with careful mould management
Effects uplifted focus, creative clarity, gentle body relaxation
Environment Both

About Chemex

Chemex brings a focused cerebral lift paired with gentle physical ease and a diesel lemon flavour profile. It is best treated as an intermediate plant that benefits from proactive mould prevention and good canopy management, especially in cool, wet seasons typical of Derbyshire. Growers who control humidity and airflow will find Chemex rewards effort with sizable, fragrant buds and a reliable flowering window.

Grow Difficulty:

Chemex sits at an intermediate difficulty and rewards steady canopy work and preventative care during a rainy autumn harvest season. Attention to airflow and defoliation reduces rot risk and helps buds mature cleanly.

Flowering Time:

Flowering runs about eight to ten weeks indoors under a proper light schedule. Outdoor plants finish in a typical full season if weather permits.

Yield:

Yield potential is medium to generous when plants avoid mould and receive balanced nutrients. Wet conditions late in the season will reduce harvest weight more than genetics do.

Height:

Plants show a medium to tall structure with a central cola and efficient side branching. Expect roughly one to two metres outdoors without heavy training.

Environment:

Chemex thrives indoors with controlled humidity and ventilation and performs outdoors in sheltered, sunny spots around Derbyshire. In Derbyshire choose sites with good airflow and a microclimate that limits prolonged damp on the canopy.

Climate:

Growing Chemex in Derbyshire requires strict mould control because a rainy autumn harvest season promotes rot and bud degradation. Use good airflow, late-season polytunnel protection and careful timing to protect the crop.

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 show grey mould near the tops, what now?
A
Verified answer
Cut out infected buds immediately, improve airflow and reduce humidity; salvage only healthy, dry material and revise late season protection for future runs.
Common question Posted by Urbanseedbank Answered
Q
Should I top Chemex or let it stretch?
A
Verified answer
Top once or twice to promote bushier growth if space is limited, or allow vertical stretch if you have room and want larger main colas.
Common question Posted by Urbanseedbank Answered
Q
What nutrient ratio during late flower?
A
Verified answer
Reduce nitrogen and boost phosphorus and potassium to support dense bud growth and resin production.
Common question Posted by Urbanseedbank Answered
Q
How to protect outdoor plants in heavy autumn rain?
A
Verified answer
Use temporary shelters, move pots under cover if possible and ensure good pruning to reduce dense inner foliage where moisture lingers.
Common question Posted by Urbanseedbank Answered
Q
When to flush before harvest?
A
Verified answer
Many growers start a light flush one to two weeks before harvest to improve taste and reduce excess nutrients.

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