Free UK Shipping over £99
Discreet Plain Packaging
079 3899 2670
0
£0.00
Search
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

Siz

Feminised

Siz is a hardy hybrid suited to cool, wet UK gardens and controlled indoor grows.

Why choose Siz?
  • Reliable finishes in cool climates
  • Balanced high with clear focus
  • Sturdy plants ideal for sheltered outdoor spots
THC 18-22%
CBD 0.5-1%
Lineage NORTHERN LIGHTS x SKUNK
Genotype Hybrid
Difficulty Intermediate
Flowering 8-9 weeks
Height Medium (1.2-1.8 m outdoors)
Yield Medium to high (approximately 400-500 g/m² indoor; 350-450 g/plant outdoor)
Taste earthy, citrus, pine
Seed Type Feminised
Climate Cool, wet (rainy autumn harvest season)
Effects uplifted, relaxed, focused
Environment Indoor and outdoor

About Siz

Siz is a practical hybrid bred for reliability and resin production, with genetics that favour compact structure and steady yields. It performs well indoors and outdoors but requires careful attention to airflow and harvest timing in regions like Leeds where rainy autumn conditions can affect finishing.

Grow Difficulty:

Siz is best described as an intermediate grow that rewards attention to airflow and disease prevention. In Leeds the rainy autumn harvest season increases mould risk so canopy management and timely harvest are essential.

Flowering Time:

Siz flowers in roughly eight to nine weeks under good conditions. Expect a compact finishing window that suits planned harvests.

Yield:

Indoor yields are medium to high when trained and fed properly. Outdoor plants can deliver respectable crops if harvested before prolonged autumn rain.

Height:

Plants reach a medium height with a sturdy central cola and productive side branches. They perform well under both SCROG and low-stress training.

Environment:

Indoors Siz responds well to Sea of Green and screen of green setups and stays manageable. Outdoors in Leeds it benefits from a sheltered site to reduce wind and rain damage.

Climate:

Growing Siz in Leeds requires planning for the region's rainy autumn harvest season and cooler temperatures. Choose a late-summer transplant, maximise sun exposure and be ready to dry-harvest early if heavy rain threatens.

Frequently Asked Questions

Common questions about this strain, covering growth, effects, and suitability for UK conditions.

Verified buyer feedback

Grower Reviews

0.0
No reviews yet. Be the first to share your experience.
Help other collectors choose well Leave a rating, short review, and optional photos.

Customer reviews

Customer photos 0 uploaded

No customer photos yet.
No reviews yet Be the first to leave feedback for this strain.
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
What ventilation should I use indoors for Siz?
A
Verified answer
Use an extractor with ducting and an oscillating fan to maintain steady airflow and lower humidity during late flowering.
Common question Posted by Urbanseedbank Answered
Q
How often should I check outdoor Siz for mould in Leeds?
A
Verified answer
Check daily during humid or rainy spells and after any heavy dew to catch issues early.
Common question Posted by Urbanseedbank Answered
Q
Do you recommend topping Siz?
A
Verified answer
Yes, topping once or twice promotes a bushier canopy and more even bud sites for better light distribution.
Common question Posted by Urbanseedbank Answered
Q
What drying method works best after rainy seasons?
A
Verified answer
Bring harvested branches into a dry, ventilated space and use a dehumidifier if the ambient humidity remains high.
Common question Posted by Urbanseedbank Answered
Q
Should I use foliar feeds on Siz outdoors?
A
Verified answer
Avoid foliar feeding during flowering to reduce mould risk; use it sparingly in veg for micronutrient support if needed.

Ask Urbanseedbank

Short, product-specific questions get the best answers.