How to grow Granddaddy Purple
Seb's take
Purple Urkel and Big Bud, backcrossed with ruderalis, make up this compact, hardy autoflower at a modest 16-19% THC. Sweet, floral and berry on the nose; the effect is focused and happy before settling into calm relaxation — classic purple-line character, delivered without a light-cycle to manage.
Growing Granddaddy Purple: what to expect
She's an auto — on her own clock from the day she sprouts. No switching lights, no waiting on seasons, and no pausing while you sort problems either; read how autos differ before day one.
She takes a conventional 9 weeks to flower. Conventional is underrated; so is knowing what week you're in.
Expect roughly 120 cm of plant. Manageable, though she'll appreciate a little training if your headroom is tight.
Expect 397 – 549 g/m² — a working grower's yield, reliable rather than theatrical. The harvest guide will see it in safely.
Listed at 19% THC — potent, verifiably. The figure comes from the breeder's testing, not from our enthusiasm.
Sweetness leads on the nose, and she doesn't whisper it.
Grower reports give her a relaxed lean: unhurried company for an unhurried evening.
Learn to grow her properly:
Granddaddy Purple from other breeders
The same name, several hands. Every breeder’s version below is its own cut — different figures, different temperament, same family. The particulars above describe the lead listing.
- Royal Queen Seeds feminized Seeds at Herbies →
The photoperiod version, feminized.
- Growers Choice feminized Seeds at Herbies →
The photoperiod version, feminized, finishes ahead of schedule (~55 days, not ~63).
Common questions about Granddaddy Purple
How long does Granddaddy Purple take to flower?
Around 9 weeks of flowering, by the breeder's numbers.
Is Granddaddy Purple an autoflower or a photoperiod strain?
An autoflower — she flowers on age rather than light hours, which simplifies the schedule considerably.
How tall does Granddaddy Purple grow?
Around 120 cm. Standard tent territory.
How strong is Granddaddy Purple?
The breeder lists THC around 19%. Firmly in the strong band.