303 Alien by The Fire Department
303 Alien is an indica-leaning cannabis strain from The Fire Department, bred by crossing Alien Inferno × Alien Rock Candy. Indoors it typically finishes flowering in around 60 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real 303 Alien grows against.
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Similar strains
| Breeder | The Fire Department |
|---|---|
| Type | mostly indica |
| Flowering time | ±60 days |
| Environment | Outdoors |
| Lineage | Alien Inferno × Alien Rock Candy |
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🧬 Explore the family: Alien Inferno · Alien Rock Candy
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Growing 303 Alien: 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 Alien Inferno or Alien Rock Candy 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.
303 Alien FAQ
How long does 303 Alien take to flower?
303 Alien typically flowers in around 60 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is 303 Alien an indica or a sativa?
303 Alien is listed as mostly indica.
What are the parents of 303 Alien?
303 Alien was bred from Alien Inferno × Alien Rock Candy by The Fire Department.
What environment does 303 Alien 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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