Halfdan by Nordic Breed
A indica-leaning cross of Northern Lights x Big Bud Auto × AK47, Halfdan — released by Nordic Breed — shows up in a lot of tents for good reason. Indoors it typically finishes flowering in around 85 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real Halfdan grows against.
🌿 Start a Halfdan journal — free →
Similar strains
| Breeder | Nordic Breed |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±85 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Northern Lights x Big Bud Auto × AK47 |
🌱 Get Halfdan seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Northern Lights x Big Bud Auto · AK47
Ancestry Pedigree
World of Seeds Bank
World of Seeds Bank
Sensi Seeds
The Seed Bank
Original Strains
The Seed Bank
Unknown or Legendary
Original Strains
The Seed Bank
Original Strains
Sensi Seeds
The Seed Bank
Original Strains
Original Strains
Original Strains
Serious Seeds
Original Strains
Original Strains
Original Strains
Original Strains
Growing Halfdan: 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 Northern Lights x Big Bud Auto or AK47 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.
Halfdan FAQ
How long does Halfdan take to flower?
Halfdan typically flowers in around 85 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Halfdan an indica or a sativa?
Halfdan is listed as ruderalis/indica/sativa.
What are the parents of Halfdan?
Halfdan was bred from Northern Lights x Big Bud Auto × AK47 by Nordic Breed.
What environment does Halfdan 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 Halfdan and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing Halfdan? 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.