How to grow Black Jack Auto
THC 19% 
Flowering 63 days 
Yield 400 – 550 g/m² 
Height 40-110cm Taste
Seb's take
Black Jack Auto, a third-generation cross of S.A.D. and Jack Herer autos, keeps a mostly sativa build across a compact, resin-packed plant with grape-shaped calyxes. Sweet and pungently earthy on the nose, the high runs happy, euphoric, and creative without demanding much patience, nine weeks from seed to flower. Fast, and forgiving of it.
Where it comes from
A third-generation autoflower from Sweet Seeds, Black Jack Auto sets a second-generation Sweet Afgani Delicious against Jack Herer, the latter a name that needs little introduction in these quarters. The record has her running mostly sativa, some 66.9 per cent, with a little under a third indica and a slim ruderalis remainder to keep her on an autoflowering schedule. The Afghani side lends body and resin; the Herer side lends the spice and the pedigree. Three generations of refinement have gone into her, and it shows in the consistency.
Nose & flavour
The nose leads sweet, then turns pungently earthy, a smell that does not travel discreetly. Underneath sits the herbal spice of the Jack Herer line, familiar to anyone who has kept company with it. The buds themselves form calyxes shaped, oddly, like small grapes, and carry resin enough to make their presence felt long before you reach for them.
The high
Sativa-led, and the effect keeps to that character: happy, euphoric, and inclined toward the creative rather than the horizontal. Nothing here demands a cleared evening or much patience. It lifts the mood and leaves the faculties in working order. Agreeable company for a task that wants finishing, in short.
Growing it
Nine weeks from germination to finished flower, or 63 days if you prefer it counted precisely. She reaches up to 110cm whether indoors or out, which keeps her manageable in a tent, though the record notes indoor cultivation the more convenient of the two. Expect 400–550 g/m² of resin-packed buds at around 19 per cent THC. Fast, medium-sized, and forgiving of enthusiasm, a sound choice for a grower who wants results without a long wait.
Learn to grow her properly:
Effects
Common questions about Black Jack Auto
How long does Black Jack Auto take to flower?
Around 9 weeks of flowering, by the breeder's numbers.
Is Black Jack Auto an autoflower or a photoperiod strain?
An autoflower — she flowers on age rather than light hours, which simplifies the schedule considerably.
How tall does Black Jack Auto grow?
Around 110 cm. Standard tent territory.
How strong is Black Jack Auto?
The breeder lists THC around 19%. Firmly in the strong band.
