Description
Born from the cross of XXX and End Game #3, Knockout is a sativa-dominant photoperiod variety from Happy Valley Genetics that carries a vivid aromatic profile, fruity on the nose with a clean piney backbone that carries through to the finish. Effects sit firmly in uplifting territory, the kind of clear, motivating experience that suits a daytime occasion. THC expression is very high, consistently pushing above 25%, so this is a strain that rewards patience and proper curing.
Knockout feminised seeds are well suited to indoor cultivation, where growers can expect a high yield in the range of 450-600 g/m2 over an 8 to 10 week flowering window. A medium height plant keeps canopy management straightforward, making it a practical choice for tent growers who want serious output without excessive vertical pressure. The all-female seed stock eliminates the guesswork of sexing, letting you focus on dialing in your environment. For cultivators chasing a high-THC sativa with real flavor and dependable structure, Knockout is a strain worth building a run around.
Knockout Feminized Seeds
Description:
A sativa-dominant powerhouse from Happy Valley Genetics, Knockout feminised seeds deliver very high THC levels alongside a bright, fruity-piney profile that hits with an uplifting, clear-headed energy growers and consumers keep coming back for.
Best For
Intermediate growers seeking a potent, uplifting head high
- Type
- Feminised – Photoperiod
- Genetics
- XXX x End Game #3
- THC / CBD
- Very High THC (25%+) / Low CBD (0-1%)
- Effects
- Uplifting
- Flavour / Aroma
- Fruity,Piney
- Height
- Medium
- Yield
- Average Yield (200-450gr/plant) / High Yield (450-600gr/m2)
- Flowering Time
- 8 to 10 weeks
- Difficulty
- Easy to Moderate
FAQ
All you need to know
about this product
Knockout by Happy Valley Genetics brings sativa-dominant potency and a bright fruity-piney profile together, ready for intermediate growers who want a rewarding, high-yielding photoperiod strain.
Knockout delivers a clear, uplifting head experience that sits firmly in daytime territory — motivating rather than sedating. THC consistently pushes above 25%, so the effect is powerful and best appreciated by those already comfortable with high-potency sativas.
The aromatic profile opens with bright, fruity notes and settles into a clean piney backbone that carries right through to the finish. It's a vivid, well-defined combination that makes the curing stage genuinely worth the patience.
Knockout is rated easy to moderate, making it accessible to growers who have at least a basic grow or two under their belt rather than absolute beginners. Its feminised format removes the need to sex plants, which simplifies the process considerably.
Indoor growers can expect a high yield in the 450–600 g/m² range, with a flowering window of 8 to 10 weeks. Dialling in your environment and allowing a proper cure will make the most of both the yield and the potency.
You Might Also Like
Discover more
legendary genetics
Explore handpicked strains with similar flavors and traits — perfect for your next grow.
Oh My Thai Auto Feminised Seeds
A sativa-dominant autoflower from Happy Valley Genetics pushing 25 percent THC and above, Oh My Thai Auto delivers earthy, fruity, and spicy character drawn from Purple Thai and Pineapple Runtz genetics.
Equilibrium Feminised Seeds
A high-yielding, compact powerhouse from Happy Valley Genetics, Equilibrium brings a layered profile of fruit, spice, and warm wood to a feminised photoperiod cross built for serious production.
Sour Berry Shake Feminized Seeds
Born from Sugar Shack and Super Lemon Haze #119, Happy Valley Genetics' Sour Berry Shake is a resin-heavy sativa with a candy-sweet, earthy complexity and a clean, uplifting effect that rewards the cultivator and the consumer alike.