Lab Leak by MassMedicalStrains
Growers reach for Lab Leak as a sativa-leaning option, a cross of Chemdog × Star Pupil out of MassMedicalStrains. Indoors it typically finishes flowering in around 58 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Lab Leak grows against.
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Similar strains
| Breeder | MassMedicalStrains |
|---|---|
| Type | mostly sativa |
| Flowering time | ±58 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Chemdog × Star Pupil |
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Ancestry Pedigree
Unknown or Legendary
Original Strains
MassMedicalStrains
Unknown or Legendary
Original Strains
Growing Lab Leak: what to expect
As a sativa-leaning plant, plan for a big stretch after the flip (often 100–200%) — flip earlier than feels natural and keep training options ready. Sativa-leaning plants also generally prefer a lighter feed than heavy indicas. Growers familiar with Chemdog or Star Pupil 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.
Lab Leak FAQ
How long does Lab Leak take to flower?
Lab Leak typically flowers in around 58 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Lab Leak an indica or a sativa?
Lab Leak is listed as mostly sativa.
What are the parents of Lab Leak?
Lab Leak was bred from Chemdog × Star Pupil by MassMedicalStrains.
What environment does Lab Leak 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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