Simpson Kush by Delta 9 Labs
Growers reach for Simpson Kush as a sativa-leaning option, a cross of SFV OG × FOG out of Delta 9 Labs. Indoors it typically finishes flowering in around 63 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Simpson Kush grows against.
🌿 Start a Simpson Kush journal — free →
Similar strains
| Breeder | Delta 9 Labs |
|---|---|
| Type | mostly sativa |
| Flowering time | ±63 days |
| Environment | Indoors |
| Lineage | SFV OG × FOG |
🌱 Get Simpson Kush seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: SFV OG
Ancestry Pedigree
Clone Only Strains
Clone Only Strains
Original Strains
Unknown or Legendary
Original Strains
Delta 9 Labs
Sensi Seeds
The Seed Bank
Original Strains
Cultivators Choice
Unknown or Legendary
Original Strains
Original Strains
Original Strains
Original Strains
Sensi Seeds
The Seed Bank
Cultivators Choice
Original Strains
Original Strains
Original Strains
Growing Simpson Kush: what to expect
As a sativa-leaning plant, plan for a big stretch after the flip (often 100–200%) — flip earlier than feels natural and keep training options ready. Sativa-leaning plants also generally prefer a lighter feed than heavy indicas. Growers familiar with SFV OG or FOG 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.
Simpson Kush FAQ
How long does Simpson Kush take to flower?
Simpson Kush typically flowers in around 63 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Simpson Kush an indica or a sativa?
Simpson Kush is listed as mostly sativa.
What are the parents of Simpson Kush?
Simpson Kush was bred from SFV OG × FOG by Delta 9 Labs.
What environment does Simpson Kush 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 Simpson Kush and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Simpson Kush? 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.