OG Magnum by Seattle Chronic Seeds
Bred by Seattle Chronic Seeds from Abusive OG × Kobain Kush, OG Magnum is an indica-leaning cannabis variety. Indoors it typically finishes flowering in around 56 days after the flip to 12/12. The environment targets below are the same stage-by-stage bands the Cultivar journal grades real OG Magnum grows against.
🌿 Start a OG Magnum journal — free →
Similar strains
| Breeder | Seattle Chronic Seeds |
|---|---|
| Type | mostly indica |
| Flowering time | ±56 days |
| Environment | Outdoors, Greenhouse |
| Lineage | Abusive OG × Kobain Kush |
🌱 Get OG Magnum seeds →
Affiliate link — supports Cultivar at no cost to you.
🧬 Explore the family: Abusive OG · Kobain Kush
Ancestry Pedigree
Clone Only Strains
Clone Only Strains
Original Strains
Unknown or Legendary
Original Strains
RedEyed Genetics
Clone Only Strains
Unknown or Legendary
Clone Only Strains
Clone Only Strains
Bodhi Seeds
Clone Only Strains
Bodhi Seeds
Clone Only Strains
Sensi Seeds
Original Strains
Spice of Life Seeds
Original Strains
Spice of Life Seeds
Spice of Life Seeds
Clone Only Strains
Original Strains
Original Strains
DJ Short
Unknown or Legendary
DJ Short
Unknown or Legendary
Unknown or Legendary
Unknown or Legendary
Original Strains
Unknown or Legendary
Original Strains
Unknown or Legendary
Original Strains
Unknown or Legendary
Original Strains
Unknown or Legendary
Growing OG Magnum: 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 Abusive OG or Kobain Kush 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.
OG Magnum FAQ
How long does OG Magnum take to flower?
OG Magnum typically flowers in around 56 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is OG Magnum an indica or a sativa?
OG Magnum is listed as mostly indica.
What are the parents of OG Magnum?
OG Magnum was bred from Abusive OG × Kobain Kush by Seattle Chronic Seeds.
What environment does OG Magnum 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 OG Magnum and something looks off? Free AI photo diagnosis →
Facts compiled from public breeder listings. Growing OG Magnum? 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.