Critical Extrem by Seeds66
Critical Extrem, from breeder Seeds66, is a sativa-leaning strain descended from Critical Plus. 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 Extrem grows against.
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Similar strains
| Breeder | Seeds66 |
|---|---|
| Type | mostly sativa |
| Flowering time | ±56 days |
| CBD | 0.3% |
| Environment | Outdoors, Greenhouse |
| Lineage | Critical Plus |
| Descendants | Critical Extrem Auto |
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🧬 Explore the family: Critical Plus · Critical Extrem Auto
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Growing Critical Extrem: 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 Critical Plus 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 Extrem FAQ
How long does Critical Extrem take to flower?
Critical Extrem 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 Extrem an indica or a sativa?
Critical Extrem is listed as mostly sativa.
What are the parents of Critical Extrem?
Critical Extrem was bred from Critical Plus by Seeds66.
What environment does Critical Extrem 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.
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