Thor’s Hammer XXL F4 by Viking Gardens
Thor’s Hammer XXL F4 is an indica-leaning cannabis strain from Viking Gardens, bred by crossing Thors Hammer AutoFlowering. 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 Thor’s Hammer XXL F4 grows against.
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| Breeder | Viking Gardens |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±70 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Thors Hammer AutoFlowering |
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Growing Thor’s Hammer XXL F4: 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 Thors Hammer AutoFlowering 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.
Thor’s Hammer XXL F4 FAQ
How long does Thor’s Hammer XXL F4 take to flower?
Thor’s Hammer XXL F4 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 Thor’s Hammer XXL F4 an indica or a sativa?
Thor’s Hammer XXL F4 is listed as ruderalis/indica/sativa.
What are the parents of Thor’s Hammer XXL F4?
Thor’s Hammer XXL F4 was bred from Thors Hammer AutoFlowering by Viking Gardens.
What environment does Thor’s Hammer XXL F4 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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Facts compiled from public breeder listings. Growing Thor’s Hammer XXL F4? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
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