Q
I'm growing Grandaddy Black in a greenhouse in Devon; when should I start defoliation?
A
Begin light defoliation at the start of week three of flowering and avoid heavy removal after week five to protect trichomes.
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- Deep relaxation with rich berry aroma, tailored for controlled grows and sheltered outdoor sites.
Grandaddy Black
Feminised
Grandaddy Black is an indica-dominant hybrid with compact, resinous buds and a grape-berry flavour profile.
Why choose Grandaddy Black?
- Dense, resinous buds with intense grape and berry notes
- Compact growth ideal for small spaces and SCROG setups
- Reliable medium-high yields when humidity is controlled
THC |
18-22% |
CBD |
0.5-1% |
Lineage |
Grandaddy Purple x Blackberry |
Genotype |
Indica-dominant hybrid |
Difficulty |
Intermediate |
Flowering |
8-10 weeks |
Height |
Short to medium, bushy |
Yield |
Medium-high (up to 450 g/m² indoor; ~400 g/plant outdoor) |
Taste |
Grape, Dark berry, Earthy spice |
Seed Type |
Feminised |
Climate |
temperate southern England climate |
Effects |
Deep body relaxation, Gentle euphoria, Sedative calm |
Environment |
Indoor and outdoor |
About Grandaddy Black
Grandaddy Black is an indica-dominant hybrid bred for dense, aromatic buds and reliable indoor or sheltered outdoor performance. It combines late-teens to low-twenties THC with a low CBD level to deliver strong physical relaxation and a gentle euphoric onset, making it best for afternoon or evening use. The plant stays relatively compact, responds well to topping and SCROG, and produces medium-high yields when humidity and feeding are managed. In regions like Devon, choose a sheltered site outdoors or a controlled indoor set-up to avoid late-season wet weather and preserve the dark fruit terpene character.
Grow Difficulty:
Growing Grandaddy Black in a temperate southern England climate requires steady humidity control and vigilant mould prevention. Its intermediate difficulty rewards growers who manage ventilation, feeding and occasional pruning.
Flowering Time:
Flowering completes in roughly eight to ten weeks under stable conditions. Consistent light and nutrients yield the best trichome development.
Yield:
Yield is medium to high when plants receive correct training and feed. Indoor growers can aim for up to 450 g/m² while outdoor plants in a sheltered site can reach similar totals per plant.
Height:
Plants remain short to medium with a bushy, compact structure that responds well to topping. Branches thicken and support heavy colas without excessive stretch.
Environment:
Indoors it performs well under controlled environments and suits SCROG or SOG setups. Outdoors in Devon the strain prefers a sheltered, sunny spot to avoid wind and late-season rain.
Climate:
In Devon the temperate southern England climate gives a long, mild season but brings variable rain and humidity. Choose raised or well-draining beds and provide shelter to finish the crop cleanly.
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
£8.00 / seed • You save £13.33
100% Satisfaction Guarantee • Secured Payments