ChloroFileGranddaddy Purple Auto
Indica variety from Royal Queen Seeds, flowering in 10-12 wks. Reference data for planning a grow, not a measurement of your plant.
Catalogue data last updated 17 October 2026.
10 breeders sell Granddaddy Purple
Royal Queen Seeds is one of them. Photoperiod versions finish anywhere from week 7 to week 12. Compare every version side by side.
Where it came from
| Lineage | Granddaddy Purple x Big Bud Auto |
How it grows
| Indoor yield | 375 - 450 gr/m2 |
| Outdoor yield | 110 - 160 gr/plant |
| Indoor height | 70 - 120 cm |
| Outdoor height | 80 - 140 cm |
| Climate | Long Summers |
| Grown | Indoor, Outdoor |
What growers describe
Reported by catalogs and growers, not measured from a plant.
Reported effects
- Physically Relaxing
- Sleepy
- Uplifted
Aromas
- Berry
- Fruity
- Herbal
- Piney
Schedule and VPD targets
Vapour pressure deficit targets by stage, measured from leaf temperature rather than air temperature. The same bands ChloroFile charts against.
| Stage | When | VPD target |
|---|---|---|
| Seedling | Weeks 1-2 | 0.4 - 0.8 kPa |
| Vegetative | Until you flip | 0.8 - 1.2 kPa |
| Early flower | Flower weeks 1-3 | 1.0 - 1.5 kPa |
| Late flower | Flower weeks 4-12 | 1.2 - 1.6 kPa |
Counting from the flip, expect to harvest between week 10 and week 12.
Where to look next
Grouped by how each one is related to this variety rather than ranked into a single list, because those are different questions.
Crosses made from this
Varieties that name this one as a parent.
- Cherry Pie AutoRoyal Queen Seeds · similar effects, similar potency
- Cherry PieRoyal Queen Seeds · similar potency, similar flowering time
- Sueno Purple Punch AutoNarcos Seedbank · same type, similar flavour
Shares a parent
Different crosses that draw on the same parent.
- Granddaddy PurpleRoyal Queen Seeds · similar potency, similar effects
- Sumo's Big BudSumo Seeds · similar potency, same type
- Big Bud AutomaticSensi Seeds · same type, similar flowering time
If you liked this
No shared parentage, but they line up on type, flowering time and reported character.
- FastBerryFast Buds · similar potency, similar flowering time
Track one of these
ChloroFile carries this whole reference offline. Pick a variety when you add a plant and it fills in the type, seed type, and flowering window, then logs what actually happened against it.