Romulan x UBC Chemo by Federation Seeds

Type mostly indicaFlower ±63 daysCross Romulan × UBC Chemo

Romulan x UBC Chemo lands on the indica-leaning side of the spectrum, Federation Seeds's take on the Romulan × UBC Chemo line. Indoors it typically finishes flowering in around 63 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Romulan x UBC Chemo grows against.

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BreederFederation Seeds
Typemostly indica
Flowering time±63 days
EnvironmentOutdoors
LineageRomulan × UBC Chemo

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🧬 Explore the family: Romulan · UBC Chemo

Ancestry Pedigree

Romulan
Federation Seed Company
Romulan
Unknown or Legendary
Mostly Indica
Original Strains
UBC Chemo
Federation Seed Company
UBC Chemo
Clone Only Strains
Mostly Indica
Original Strains
Unknown Strain
Original Strains

Growing Romulan x UBC Chemo: 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 Romulan or UBC Chemo 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.

Romulan x UBC Chemo FAQ

How long does Romulan x UBC Chemo take to flower?

Romulan x UBC Chemo typically flowers in around 63 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Romulan x UBC Chemo an indica or a sativa?

Romulan x UBC Chemo is listed as mostly indica.

What are the parents of Romulan x UBC Chemo?

Romulan x UBC Chemo was bred from Romulan × UBC Chemo by Federation Seeds.

What environment does Romulan x UBC Chemo 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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Facts compiled from public breeder listings. Growing Romulan x UBC Chemo? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.

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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.