Grape Pupil by MassMedicalStrains
Grape Pupil, from breeder MassMedicalStrains, is an indica-leaning strain descended from Star Pupil × Pu Tang. 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 Grape Pupil grows against.
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Similar strains
| Breeder | MassMedicalStrains |
|---|---|
| Type | mostly indica |
| Flowering time | ±56 days |
| Environment | Outdoors |
| Lineage | Star Pupil × Pu Tang |
| Descendants | Pink Taco, Lilac Manatee |
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🧬 Explore the family: Star Pupil · Pu Tang · Pink Taco · Lilac Manatee
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MassMedicalStrains
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MassMedicalStrains
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Cultivators Choice
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Growing Grape Pupil: 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 Star Pupil or Pu Tang 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.
Grape Pupil FAQ
How long does Grape Pupil take to flower?
Grape Pupil 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 Grape Pupil an indica or a sativa?
Grape Pupil is listed as mostly indica.
What are the parents of Grape Pupil?
Grape Pupil was bred from Star Pupil × Pu Tang by MassMedicalStrains.
What environment does Grape Pupil 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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