Rambo by TH Seeds

Rambo strain photo
Type mostly sativaFlower ±56 daysCross Jamaican Haze × Jamaican Purple

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Growers reach for Rambo as a sativa-leaning option, a cross of Jamaican Haze × Jamaican Purple out of TH Seeds. 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 Rambo grows against.

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BreederTH Seeds
Typemostly sativa
Flowering time±56 days
EnvironmentOutdoors
LineageJamaican Haze × Jamaican Purple
DescendantsStrawberry Grape Smoothie

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🧬 Explore the family: Jamaican Haze · Jamaican Purple · Strawberry Grape Smoothie

Ancestry Pedigree

Jamaican Haze
Unknown or Legendary
Jamaica Sativa
Original Strains
Jamaican Purple
Unknown or Legendary
Unknown Strain
Original Strains
Super Afghan
Unknown or Legendary
Afghanistan Indica
Original Strains

Growing Rambo: 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 Jamaican Haze or Jamaican Purple 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.

Rambo FAQ

How long does Rambo take to flower?

Rambo 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 Rambo an indica or a sativa?

Rambo is listed as mostly sativa.

What are the parents of Rambo?

Rambo was bred from Jamaican Haze × Jamaican Purple by TH Seeds.

What environment does Rambo 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.