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White Mac

Feminised

White Mac is a resinous hybrid that balances uplifting cerebral effects with gentle body relaxation and performs well indoors under LED.

Why choose White Mac?
  • Resin-heavy buds ideal for extracts
  • Performs strongly under LEDs
  • Balanced high for day or evening use
THC 20-24%
CBD <1%
Lineage Mac 1 x White Widow
Genotype Hybrid
Difficulty Moderate
Flowering 8-10 weeks
Height Medium; typically 60-120 cm indoors and taller outdoors
Yield 400-550 g/m² (indoor), 400-600 g/plant (outdoor in good conditions)
Taste Citrus zest, Earthy spice, Creamy vanilla
Seed Type Feminised
Climate variable British weather
Effects Uplifting euphoria, Relaxed body sensation, Clear mental focus
Environment Suitable for both indoor and outdoor cultivation with a preference for controlled indoor environments

About White Mac

White Mac is a dependable hybrid prized for heavy trichome production and a clear, manageable high. It adapts well to controlled indoor environments and can produce strong outdoor yields in sheltered sites, making it a versatile choice for growers in temperate regions.

Grow Difficulty:

Growers in the UK will find White Mac moderate to cultivate and responsive to training, but it does need attention to humidity and nutrients. Variable British weather makes outdoor runs unpredictable, so many growers mitigate risk with greenhouse or indoor setups.

Flowering Time:

Flowering typically completes between eight and ten weeks under ideal conditions. Expect generous resin development in the final two to three weeks.

Yield:

Indoors White Mac can produce between 400 and 550 grams per square metre under good LED rigs. Outdoors yields vary but can be very respectable when plants finish before autumn rain.

Height:

Plants show a medium, bushy structure with strong side branching suited to SCROG and SOG methods. They remain manageable in height indoors but can reach greater size outdoors with space.

Environment:

White Mac performs consistently under controlled indoor lighting in Manchester where growers can regulate humidity and temperature. Outdoor plants in Manchester benefit from a sheltered spot or a greenhouse to avoid late-season rain.

Climate:

Growing White Mac in Manchester requires planning for the variable British weather, including sudden wet spells and cool nights. A greenhouse or indoor LED environment in Manchester helps to control humidity and avoid mould during autumn.

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
What's your ideal LED setup for White Mac in Manchester?
A
Verified answer
I run a 300–600 µmol PAR LED at canopy level with a 400–600 W equivalent per m², keeping temps around 22–26°C and RH 45–55%.
Common question Posted by Urbanseedbank Answered
Q
How do you handle late-season rain outdoors here?
A
Verified answer
I move plants into a polytunnel or greenhouse by mid-September in Manchester to prevent bud rot from autumn downpours.
Common question Posted by Urbanseedbank Answered
Q
Do you flush before harvest?
A
Verified answer
I reduce feeds in the final two weeks and give a pure water flush to improve burn and flavour at harvest.
Common question Posted by Urbanseedbank Answered
Q
Which training gave you the best results?
A
Verified answer
A combination of topping early and sustained LST delivered the most even canopy and top yields for me.
Common question Posted by Urbanseedbank Answered
Q
Any tips for curing in small spaces?
A
Verified answer
Use 500 ml jars and burp daily for the first two weeks, then reduce to once a week to keep humidity stable without needing much space.

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