Grandaddy Black 3 seeds + 1 bonus
Grandaddy Black Seeds – Grandaddy Purple × Black Domina
What is Grandaddy Black? Grandaddy Black by Original Sensible Seeds is a feminised, photoperiod Indica bred from Grandaddy Purple × Black Domina with 95% Indica and 5% Sativa. It flowers for 60 to 65 days, grows compactly and, according to the manufacturer, yields 600 g/m² indoors with 23% THC. Green to purple-black leaves, resinous flowers with an earthy-sweet, fruity flavour and a grape note as well as a strongly body-focused effect are typical. Outdoors it ripens by the first week of October. With us it is rated as a strain for experienced growers – in the Indica strains category. Available as 3 seeds + 1 bonus, 5 seeds + 2 bonus, 10 seeds + 4 bonus, 25 seeds + 10 bonus and 50 seeds + 20 bonus.
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Manufacturer Information
Genetics & Origin of Grandaddy Black
Behind Grandaddy Black are two well-known names: Original Sensible Seeds crossed Grandaddy Purple with Black Domina. The breeder describes Grandaddy Purple as a distinct, highly regarded strain and Black Domina as an elite line; the cross is meant to satisfy connoisseurs just as much as yield-focused growers. With 95% Indica and 5% Sativa, it is almost pure Indica. The manufacturer gives the THC content as 23% and counts it among the most potent strains in its catalogue; it does not state a CBD value. The plants stay compact and show green to purple-black leaves. The seeds are feminised and photoperiod. You will find strains of the same name from other breeders individually in our range: Granddaddy Purple by Royal Queen Seeds and Black Domina Regular by Sensi Seeds.
Who Is Grandaddy Black For?
Grandaddy Black is an almost pure Indica with dark looks. It suits:
- Experienced growers looking for a compact, high-yielding Indica
- Indoor growers who want to harvest after 60 to 65 days of flowering
- Outdoor gardeners who would like to be finished by the first week of October
- Lovers of purple-black plants and grapey aromas
- Experienced consumers who appreciate a heavy, body-focused evening strain
According to our rating, it is less suitable for a first grow, and if you want to stay active during the day, a Sativa is the better choice. You can find more strains with bonus seeds under Bonus Seeds.
Growing Grandaddy Black: Indoor & Outdoor
Indoor Growing
In enclosed spaces, Grandaddy Black flowers for 60 to 65 days on average. Original Sensible Seeds describes compact plants with plump, resin-coated flowers and states an indoor yield of 600 g/m². The breeder does not give heights in centimetres, nor recommendations on particular training methods. The manufacturer calls growing it effortless; in the shop, Grandaddy Black is nevertheless rated as a strain for experienced growers. With dense, heavy flowers, good air movement and controlled humidity make sense in the final weeks, and supports take the load off heavily laden shoots. A carbon filter keeps the smell in the grow room. You will find the basics on climate and feeding in the Growpedia.
Outdoor Growing
According to the manufacturer, Grandaddy Black also thrives outdoors and copes with most climate zones. It is ready for harvest from around the end of September to the first week of October; Original Sensible Seeds then states about 800 g per plant. A sunny spot and supports for the heavy flowers help to bring in this yield safely. There is no information on height outdoors. Only grow where it is legal to do so.
Effect, Aroma & Flavour of Grandaddy Black
According to Original Sensible Seeds, the flowers of Grandaddy Black taste earthy-sweet and fruity with a grapey undertone. The manufacturer does not state a lab terpene profile. The breeder describes the effect as decidedly physical: it speaks of a couch-lock effect that pins even very experienced smokers to the sofa. That fits the Indica share of 95%. With 23% THC, the manufacturer counts it among the most potent strains in its catalogue – this makes Grandaddy Black more of a strain for the evening, with which careful dosing makes sense. The breeder gives no information on the duration of the effect or on the CBD content. How intense the effect is depends on dose and individual tolerance.
Note: Effect information is based on manufacturer data and user experience and does not constitute medical advice.
Why Buy Grandaddy Black at United Seedbanks?
If you order Grandaddy Black, you should know who you are buying from: United Seedbanks is an established specialist shop for cannabis seeds and stocks Original Sensible Seeds as a permanent part of its range.
- Original genetics from Original Sensible Seeds – Grandaddy Black in five pack sizes from 3 to 50 seeds, each with bonus seeds.
- Advice from a specialist retailer – we help if you are torn between several strains or pack sizes.
- Discreet shipping – neutral packaging and free delivery from €100.
- Payment of your choice – credit card, bank transfer or Bitcoin.
- Fresh, verified seeds – professionally stored for a dependable germination rate.
That way you get Grandaddy Black from a reliable source. You can find more strains from this breeder on the Original Sensible Seeds page.
Frequently Asked Questions about Grandaddy Black
What cross does Grandaddy Black come from?
From Grandaddy Purple × Black Domina. Original Sensible Seeds gives the type as 95% Indica and 5% Sativa.
Is Grandaddy Black suitable for beginners?
Not really. The manufacturer does call growing it effortless, but in the shop it is rated as a strain for experienced growers.
How long does Grandaddy Black flower?
Indoors, 60 to 65 days on average. Outdoors, it is finished from around the end of September to the first week of October.
How much yield does Grandaddy Black deliver?
The manufacturer states 600 g/m² indoors and about 800 g per plant outdoors.
Do the plants really turn dark?
Original Sensible Seeds describes leaves in green to purple-black. How pronounced the colouring is can vary depending on the plant and conditions.