KC 45 by K.C. Brains

KC 45 strain photo
Type ruderalis/sativaFlower ±63 daysCross Russia Ruderalis × Brazil Sativa

KC 45 lands on the sativa-leaning side of the spectrum, K.C. Brains's take on the Russia Ruderalis × Brazil Sativa 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 KC 45 grows against.

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BreederK.C. Brains
Typeruderalis/sativa
Flowering time±63 days
EnvironmentOutdoors
LineageRussia Ruderalis × Brazil Sativa
DescendantsKC 48 Auto

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🧬 Explore the family: Russia Ruderalis · Brazil Sativa · KC 48 Auto

Ancestry Pedigree

Russia Ruderalis
Original Strains
Brazil Sativa
Original Strains

Growing KC 45: 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 Russia Ruderalis or Brazil Sativa 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.

KC 45 FAQ

How long does KC 45 take to flower?

KC 45 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 KC 45 an indica or a sativa?

KC 45 is listed as ruderalis/sativa.

What are the parents of KC 45?

KC 45 was bred from Russia Ruderalis × Brazil Sativa by K.C. Brains.

What environment does KC 45 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 KC 45? 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.