Killing Fields F2 by Sannies Seeds

Killing Fields F2 strain photo
Type mostly sativaFlower ±81 daysTHC 14.50%Cross The One × Sannies Jack

If you were haunting the OpenGrow forums back in the late 2000s, you already know about Killing Fields. Sannie's Seeds made serious waves when they dropped this one, crossing the legendary "The One" clone with their signature Sannie's Jack (a heavy-hitting Jack Herer line). The F2 release was a massive deal because growers were hunting for those crazy, vibrant purple and red phenos that bled resin. It wasn't just bag appeal, though. The breeding was totally focused on pulling out the absolute best traits from both parents, and guys like "Scone_of_Ark" even pushed the line further into F3 territory just to lock down those insane colors.

In the grow room, she was a beast. Being heavily sativa-dominant, you had to be ready for an 11 to 12-week flowering time, but the payoff was absurd. We're talking indoor yields pushing 700 grams per square meter if you had your environment dialed in. The smell was something else entirely—a really loud, funky mix of sharp lemon, floral skunk, and straight-up petrol. You could easily spot a Killing Fields jar just by the smell alone.

The high is what kept it a cult classic on boards like THCFarmer and Rollitup. It hits with a heavy, soaring cerebral energy that gets your creative gears turning without knocking you out for the day. Since Sannie's operation slowed down, finding original F2 beans is practically impossible now. It's one of those underrated bangers that old-school heads still hoard in the back of their seed vaults.

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Similar strains

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BreederSannies Seeds
Typemostly sativa
Flowering time±81 days
THC14.50%
CBD0.00%
EnvironmentIndoors
LineageThe One × Sannies Jack
DescendantsSelene, Motarebel - Sativa Queen, Sog Killin, Motarebel - Killing Kush, Silverfields, Violet Haze

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🧬 Explore the family: The One · Selene · Motarebel - Sativa Queen · Sog Killin · Motarebel - Killing Kush · Silverfields · Violet Haze

Ancestry Pedigree

The One
Unknown or Legendary
Killa Queen
Motarebel
Cinderella 99
Brothers Grimm
Princess
Brothers Grimm
Jack Herer
Sensi Seeds
Unknown Strain
Original Strains
P94
Brothers Grimm
Princess
Brothers Grimm
Cinderella 88
Brothers Grimm
Princess
Brothers Grimm
P75
Unknown or Legendary
Princess
Brothers Grimm
P50
Unknown or Legendary
Princess
Brothers Grimm
Shiva Skunk
Sensi Seeds
Northern Lights 5 Skunk Nr1 F1 Hybrid
The Seed Bank
Northern Lights Nr5
The Seed Bank
Skunk Nr1
The Seed Bank
G-13
Unknown or Legendary
Indica
Original Strains
Blueberry Sativa
Eskobar Seeds
True Blueberry
DJ Short
Blueberry
DJ Short
Blueberry
DJ Short
Blueberry Line
Unknown or Legendary
Temple Flo
DJ Short
Floral Line
Unknown or Legendary
Purple Thai
Unknown or Legendary
Highland Oxacan Gold
Unknown or Legendary
Mexico Sativa
Original Strains
Chocolate Thai
Unknown or Legendary
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary
HTAF
Unknown or Legendary
Thailand Sativa
Original Strains
Afghani
Unknown or Legendary
Sannies Jack
Sannies Seeds
Jack Herer
Sensi Seeds
Northern Lights Nr5
The Seed Bank
Purest Indica
Clone Only Strains
Afghani
Unknown or Legendary
Afghanistan Indica
Original Strains
Hawaii Sativa
Original Strains
Skunk Nr1
Sensi Seeds
Skunk Nr1
The Seed Bank
Skunk Nr1
Cultivators Choice
Afghanistan Indica
Original Strains
Mexico Sativa
Original Strains

Growing Killing Fields F2: 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 The One or Sannies Jack 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.

Killing Fields F2 FAQ

How long does Killing Fields F2 take to flower?

Killing Fields F2 typically flowers in around 81 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.

Is Killing Fields F2 an indica or a sativa?

Killing Fields F2 is listed as mostly sativa.

What are the parents of Killing Fields F2?

Killing Fields F2 was bred from The One × Sannies Jack by Sannies Seeds.

How strong is Killing Fields F2?

Reported THC for Killing Fields F2 is 14.50% and CBD 0.00%. Actual potency depends heavily on environment, harvest ripeness, and cure quality.

What environment does Killing Fields F2 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 Killing Fields F2? 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.