Rx by Vanc. Island SC

Rx strain photo
Type mostly indicaFlower ±53 daysCross Romulan × Fucking Incredible

Rx lands on the indica-leaning side of the spectrum, Vanc. Island SC's take on the Romulan × Fucking Incredible line. Indoors it typically finishes flowering in around 53 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Rx grows against.

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BreederVanc. Island SC
Typemostly indica
Flowering time±53 days
EnvironmentOutdoors
LineageRomulan × Fucking Incredible

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🧬 Explore the family: Romulan · Fucking Incredible

Ancestry Pedigree

Romulan
Next Generation Seed Company
Romulan
Unknown or Legendary
Mostly Indica
Original Strains
Romulan
Unknown or Legendary
Fucking Incredible
Vancouver Island Seed Company
Mostly Indica
Original Strains

Growing Rx: 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 Fucking Incredible 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.

Rx FAQ

How long does Rx take to flower?

Rx typically flowers in around 53 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Rx an indica or a sativa?

Rx is listed as mostly indica.

What are the parents of Rx?

Rx was bred from Romulan × Fucking Incredible by Vanc. Island SC.

What environment does Rx 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 Rx? 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.