Critical Sour by Female Seeds
A indica-leaning cross of Maroc × Auto NL, Critical Sour — released by Female Seeds — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 56 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Critical Sour grows against.
🌿 Start a Critical Sour journal — free →
Similar strains
| Breeder | Female Seeds |
|---|---|
| Type | mostly indica |
| Flowering time | ±56 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Maroc × Auto NL |
🌱 Get Critical Sour seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Maroc · Auto NL
Ancestry Pedigree
Female Seeds
Original Strains
Female Seeds
Female Seeds
Unknown or Legendary
Clone Only Strains
Original Strains
Growing Critical Sour: 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 Maroc or Auto NL 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.
Critical Sour FAQ
How long does Critical Sour take to flower?
Critical Sour typically flowers in around 56 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Critical Sour an indica or a sativa?
Critical Sour is listed as mostly indica.
What are the parents of Critical Sour?
Critical Sour was bred from Maroc × Auto NL by Female Seeds.
What environment does Critical Sour 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 Critical Sour and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Critical Sour? 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.