Flat Earth by MassMedicalStrains

Flat Earth strain photo
Type indica/sativaFlower ±56 daysCross MrE Pupil × Five Star

Flat Earth, from breeder MassMedicalStrains, is an indica-leaning strain descended from MrE Pupil × Five Star. 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 Flat Earth grows against.

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Similar strains

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BreederMassMedicalStrains
Typeindica/sativa
Flowering time±56 days
EnvironmentIndoors
LineageMrE Pupil × Five Star

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🧬 Explore the family: Five Star

Ancestry Pedigree

MrE Pupil
MassMedicalStrains
Mr E
MassMedicalStrains
Skunk
Unknown or Legendary
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains
Colombia Sativa
Original Strains
Unknown Strain
Original Strains
Star Pupil
MassMedicalStrains
Afghani
Unknown or Legendary
Thailand Sativa
Original Strains
Five Star
MassMedicalStrains
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary

Growing Flat Earth: 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 MrE Pupil or Five Star 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.

Flat Earth FAQ

How long does Flat Earth take to flower?

Flat Earth 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 Flat Earth an indica or a sativa?

Flat Earth is listed as indica/sativa.

What are the parents of Flat Earth?

Flat Earth was bred from MrE Pupil × Five Star by MassMedicalStrains.

What environment does Flat Earth 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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Published by Cultivar (logmygrow.com), a structured grow journal. These reference bands are the same ones the app grades real grows against. Free to cite with a link. Some outbound product links are affiliate links — see disclosures.