K2 by Bulk Seed Bank
1 other breeder's version of K2 — compare flowering times side by side →
First things first, we gotta clear the air—we are talking about the classic botanical cannabis strain K2, absolutely not that synthetic chemical garbage they sell in gas stations as "Spice." This K2 from Bulk Seed Bank is a pure old-school workhorse. By smashing together a resin-drenched White Widow with a bulletproof Hindu Kush, they created an indica-dominant banger that earned its name from the world's second-highest mountain. Why K2? Because it represents peak performance in the grow room, spitting out rock-hard nuggets faster than most strains can even start swelling.
If you're running an indoor setup with limited headroom, K2 is your best friend. Growers absolutely love throwing this plant into a Sea of Green (SOG) because of how short and bushy it stays. It practically manages itself. You get a super low calyx-to-leaf ratio, meaning you spend way less time in "trim jail" and more time admiring the frost. Plus, it finishes ridiculously fast. We're talking a solid 7 to 8-week flowering time where the buds just explode with trichomes inherited from that Widow mother.
When it comes to the smoke, K2 is a heavy hitter that leans deep into its Hindu Kush roots. The flavor profile is a wild mix of exotic fruits layered over a spicy, hash-like backbone. It hits you with a potent, couch-locking body stone that's therapeutic without completely shutting off your brain. It's just a reliable, heavy-yielding classic that proves you don't need fifty different Gelato crosses to find something that grows easy and hits hard.
Similar strains
| Breeder | Bulk Seed Bank |
|---|---|
| Type | mostly indica |
| Flowering time | ±53 days |
| Environment | Outdoors |
| Lineage | K2 |
| Descendants | BioQueen Seeds - K2, K2, Everest Queen, Barneys Farm - K2, GreenLabel Seeds - K2, Growi Seeds Amsterdam - K2, Nirvana Seeds - K2 |
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🧬 Explore the family: K2 · BioQueen Seeds - K2 · K2 · Everest Queen · Barneys Farm - K2 · GreenLabel Seeds - K2 · Growi Seeds Amsterdam - K2 · Nirvana Seeds - K2
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De Sjamaan
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Growing K2: 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 K2 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.
K2 FAQ
How long does K2 take to flower?
K2 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 K2 an indica or a sativa?
K2 is listed as mostly indica.
What are the parents of K2?
K2 was bred from K2 by Bulk Seed Bank.
What environment does K2 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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