Twisted Sister by Forum Genetics
Twisted Sister is an indica-leaning cannabis strain from Forum Genetics, bred by crossing McPurple × McPurple. Indoors it typically finishes flowering in around 67 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Twisted Sister grows against.
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Similar strains
| Breeder | Forum Genetics |
|---|---|
| Type | mostly indica |
| Flowering time | ±67 days |
| Environment | Outdoors |
| Lineage | McPurple × McPurple |
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🧬 Explore the family: McPurple · McPurple
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Forum Genetics
Growing Twisted Sister: 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 McPurple or McPurple 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.
Twisted Sister FAQ
How long does Twisted Sister take to flower?
Twisted Sister typically flowers in around 67 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Twisted Sister an indica or a sativa?
Twisted Sister is listed as mostly indica.
What are the parents of Twisted Sister?
Twisted Sister was bred from McPurple × McPurple by Forum Genetics.
What environment does Twisted Sister 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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