Humboldt by CH9 Female Seeds
1 other breeder's version of Humboldt — compare flowering times side by side →
Humboldt, from breeder CH9 Female Seeds, is an indica-leaning strain descended from Humboldt × Jack 33. 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 grows against.
🌿 Start a Humboldt journal — free →
Similar strains
| Breeder | CH9 Female Seeds |
|---|---|
| Type | indica/sativa |
| Flowering time | ±53 days |
| Environment | Outdoors |
| Lineage | Humboldt × Jack 33 |
🌱 Get Humboldt seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Humboldt · Jack 33
Ancestry Pedigree
Unknown or Legendary
Original Strains
CH9 Female Seeds
CH9 Female Seeds
Sensi Seeds
The Seed Bank
Original Strains
Original Strains
Original Strains
Original Strains
Original Strains
Sensi Seeds
The Seed Bank
Original Strains
Cultivators Choice
Unknown or Legendary
Original Strains
Original Strains
Original Strains
Original Strains
CH9 Female Seeds
Dutch Passion
Original Strains
Unknown or Legendary
Growing Humboldt: 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 Jack 33 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 FAQ
How long does Humboldt take to flower?
Humboldt 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 an indica or a sativa?
Humboldt is listed as indica/sativa.
What are the parents of Humboldt?
Humboldt was bred from Humboldt × Jack 33 by CH9 Female Seeds.
What environment does Humboldt 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.
📷 Growing Humboldt and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Humboldt? A structured journal — with your feedings, readings, and photos — is how you find what THIS cut actually wants.
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.