Onyx by Short Stuff
Onyx, from breeder Short Stuff, is an indica-leaning strain descended from AK47 × White Russian. Indoors it typically finishes flowering in around 54 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Onyx grows against.
🌿 Start a Onyx journal — free →
Similar strains
| Breeder | Short Stuff |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±54 days |
| Environment | Outdoors |
| Lineage | AK47 × White Russian |
| Descendants | Big Domina, Onyx Reloaded |
🌱 Get Onyx seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: AK47 · White Russian · Big Domina · Onyx Reloaded
Ancestry Pedigree
Serious Seeds
Original Strains
Original Strains
Original Strains
Original Strains
Serious Seeds
Serious Seeds
De Sjamaan
Original Strains
Original Strains
Soma Seeds
Original Strains
Mr Nice Seedbank
Unknown or Legendary
Original Strains
Original Strains
Growing Onyx: what to expect
As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with AK47 or White Russian will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Onyx FAQ
How long does Onyx take to flower?
Onyx typically flowers in around 54 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Onyx an indica or a sativa?
Onyx is listed as ruderalis/indica/sativa.
What are the parents of Onyx?
Onyx was bred from AK47 × White Russian by Short Stuff.
What environment does Onyx like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
📷 Growing Onyx and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Onyx? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.