Ultra Critical by Azarius Seeds
Growers reach for Ultra Critical as an indica-leaning option, a cross of Big Bud × Skunk out of Azarius Seeds. Indoors it typically finishes flowering in around 70 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Ultra Critical grows against.
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Similar strains
| Breeder | Azarius Seeds |
|---|---|
| Type | indica/sativa |
| Flowering time | ±70 days |
| Environment | Outdoors |
| Lineage | Big Bud × Skunk |
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Growing Ultra Critical: 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 Big Bud or Skunk 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.
Ultra Critical FAQ
How long does Ultra Critical take to flower?
Ultra Critical typically flowers in around 70 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Ultra Critical an indica or a sativa?
Ultra Critical is listed as indica/sativa.
What are the parents of Ultra Critical?
Ultra Critical was bred from Big Bud × Skunk by Azarius Seeds.
What environment does Ultra Critical 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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