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Holy Grail

Feminised

Holy Grail is an indica-leaning hybrid noted for dense buds and a resinous, fruity-earthy profile.

Why choose Holy Grail?
  • Dense, resinous buds with a layered flavour profile
  • Balanced high that suits both day and evening use
  • Reliable performance when moisture is managed
THC 18-22%
CBD <1%
Lineage OG Kush x Granddaddy Purple
Genotype Hybrid (Indica-dominant)
Difficulty Intermediate
Flowering 8-10 weeks
Height Medium-tall (compact bushy structure)
Yield Medium to high
Taste Earthy, Berry, Pine
Seed Type Feminised
Climate moist western coastal
Effects Euphoric, Relaxed, Creative
Environment Greenhouse / Outdoor

About Holy Grail

Holy Grail blends OG Kush and Granddaddy Purple genetics to produce compact, resinous plants with a rich berry-earth flavour. It suits growers seeking a potent, balanced effect and performs well where attention is paid to moisture control.

Grow Difficulty:

Growing Holy Grail is intermediate in difficulty and it needs attention in damp seasons due to mould risk in a moist western coastal climate. Careful ventilation and routine inspection are important in such conditions.

Flowering Time:

Flowering generally completes between eight and ten weeks under stable conditions. Individual phenotypes may finish slightly earlier or later.

Yield:

Yield is medium to high when plants receive consistent care and adequate light. Controlled environments tend to produce the most reliable results.

Height:

Plants develop a medium-tall, bushy habit with sturdy branches that support dense cola formation. Structure is compact enough for managed spaces while still producing substantial top growth.

Environment:

Indoors this variety responds well to controlled light cycles and space management, while in Down greenhouse setups it benefits from shelter and extended season. Outdoors in Down it performs best where airflow and drainage reduce prolonged dampness.

Climate:

Growing Holy Grail in Down requires attention to the moist western coastal climate and a focus on preventing prolonged damp around the canopy. Seasonal wind and rain patterns in Down mean shade and shelter should be considered to limit mould pressure.

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
How did your Holy Grail handle the season?
A
Verified answer
It showed good vigour but needed extra attention during wet spells to avoid mould.
Common question Posted by Urbanseedbank Answered
Q
Any advice on strain selection for my area?
A
Verified answer
Pick strains known for resilience in damp climates and learn from local growers and reputable sources.
Common question Posted by Urbanseedbank Answered
Q
Did you notice much variation between plants?
A
Verified answer
There was some phenotypic variation in bud density and terpene expression, which is typical for hybrids.
Common question Posted by Urbanseedbank Answered
Q
What signs indicated readiness to harvest?
A
Verified answer
Maturity signs were gradual and varied by plant, so monitoring overall development was more useful than fixed dates.
Common question Posted by Urbanseedbank Answered
Q
Would you grow Holy Grail again here?
A
Verified answer
Yes, with refined canopy management and a focus on keeping foliage dry, it proved a rewarding variety.

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