Humboldt x Ersb by CH9 Female Seeds

Humboldt x Ersb strain photo
Type mostly indicaFlower ±53 daysCross Humboldt × Ed Rosenthal Super Bud

Humboldt x Ersb lands on the indica-leaning side of the spectrum, CH9 Female Seeds's take on the Humboldt × Ed Rosenthal Super Bud 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 Humboldt x Ersb grows against.

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BreederCH9 Female Seeds
Typemostly indica
Flowering time±53 days
EnvironmentOutdoors
LineageHumboldt × Ed Rosenthal Super Bud

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🧬 Explore the family: Humboldt · Ed Rosenthal Super Bud

Ancestry Pedigree

Humboldt
Unknown or Legendary
USA Mostly Indica
Original Strains
Ed Rosenthal Super Bud
Sensi Seeds
Eds PEHT
The Seed Bank
Afghanistan Indica
Original Strains
Hindu Kush Indica
Original Strains
Mexico Sativa
Original Strains
Thailand Sativa
Original Strains
Africa Hybrid
Original Strains

Growing Humboldt x Ersb: 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 Humboldt or Ed Rosenthal Super Bud 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.

Humboldt x Ersb FAQ

How long does Humboldt x Ersb take to flower?

Humboldt x Ersb 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 Humboldt x Ersb an indica or a sativa?

Humboldt x Ersb is listed as mostly indica.

What are the parents of Humboldt x Ersb?

Humboldt x Ersb was bred from Humboldt × Ed Rosenthal Super Bud by CH9 Female Seeds.

What environment does Humboldt x Ersb 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 Humboldt x Ersb? 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.