Total
1
- In stock
- Orders sent from the US
- Tracked discreet delivery
1/6
.8e091a2b.svg)
Flowering Type
Photoperiod
Parental lines
(Neville's Haze x Haze AC) x Haze C
THC content
Information not available
CBD content
Low CBD (0-1%)
Autoflowering seed to harvest time
Information not available
Yield indoor
Information not available
Plant size
Information not available
Suitable climates
Humid, Warm
Parental lines
(Neville's HazeHaze AC)Haze C
Superb Haze hybrid strain.
Holy Grail is a genetic combination of Neville's Haze and other Haze strains. Growers will need a degree of patience as growing out these seeds is no quick fix. Expect high to very high levels of THC, large to very large harvests and a superb terpene profile.
Flowering takes an average of 14 weeks with the typical range being 12 - 16 weeks, and some plants can even take even longer than that! Both the size and length of flowering period make this much more suitable for outdoor cultivation needing good weather stretching into the autumn. Cuttings will be both faster and somewhat easier to manage.
THC levels are between 18 - 24% with low CBD. Yields are in the region of 750 - 850 gr/m2 with good outdoor specimens able to produce as much as 1000 gr. each. Like ageing a fine wine good curing will bring the best results.
Brand/breeder
Parental lines
(Neville's Haze x Haze AC) x Haze C
Flowering type
Photoperiod
Sex
Regular
CBD content
Low CBD (0-1%)
Suitable climates
Humid, Warm
SKU
MRNHG
Photoperiod outdoor timeline
Photoperiod strains rely on seasonal daylight changes, so harvest timing is closely tied to your local climate.
Stage 1
Germination / Early Start
March – April
Wait for: frost risk easing, stronger spring light
Watch for: cold snaps, slow starts, excess moisture
Stage 2
Seedling / Transplant
April – May
Wait for: milder nights and settled weather
Watch for: transplant shock, wind exposure, pests
Stage 3
Vegetative Growth
June – July
Wait for: long days, regular feeding, healthy expansion
Watch for: overcrowding, nutrient issues, insect damage
Stage 4
Flowering
August – September
Wait for: shortening days, dry airflow, branch support
Watch for: mould, botrytis, high humidity, bad weather
Stage 5
Harvest
Late September – October
Wait for: ripe trichomes, dense finished flowers
Watch for: autumn rain, rot, early frosts
Indoor photoperiod timeline
Photoperiod strains give indoor growers more control over size, shape, and when flowering begins.
Week 0
Germination
Strong early establishment
Wait for: strong early establishment
Watch for: inconsistent starts, excess moisture
Week 1–2
Seedling
Stable structure and healthy growth
Wait for: stable structure and healthy growth
Watch for: stretch, early stress
Week 3–6+
Vegetative Growth
Desired plant size and canopy shape
Wait for: desired plant size and canopy shape
Watch for: overcrowding, uneven growth, training stress
7–12+ weeks
Flowering Phase
Strong flower formation and steady development
Wait for: strong flower formation and steady development
Watch for: humidity, airflow, support issues
Harvest
Harvest Window
Finished flowers and mature trichomes
Wait for: finished flowers and mature trichomes
Watch for: cutting too early or pushing too long
- No reviews collected for this product yet -
New content loaded
