Cannabis seeds
by Barney's Farm
OG Kush is a 70% indica cannabis seed variety from Barney's Farm that combines Chemdawg, Lemon Thai, and Hindu Kush genetics into one resin-drenched powerhouse. With THC levels between 23–26% and a flowering time of just 55–65 days, this is the strain outdoor growers build their season around — and indoor cultivators rely on for consistent, heavy harvests.
| Pack | Seeds | SKU |
|---|---|---|
| 3-pack | 3 feminised seeds | CSBF0182 |
| 5-pack | 5 feminised seeds | CSBF0183 |
Go with the 5-pack if you plan to select the strongest phenotype for cloning. The 3-pack works fine if you're running a single tent and want variety alongside other strains.
OG Kush traces its roots to three legendary cultivars: Chemdawg, Lemon Thai, and Hindu Kush. Chemdawg brings the fuel-forward pungency and sky-high THC. Lemon Thai contributes a citrus brightness and sativa edge that keeps the stone from being completely sedative. Hindu Kush — a landrace from the mountain range itself — locks in the indica structure: dense buds, short internodes, and that earthy, hashy undertone that Kush lovers recognise immediately.
Barney's Farm stabilised this cross into a vigorous, predictable grower. We've seen plenty of OG Kush cuts floating around over the years, and this Barney's Farm version is one of the more consistent — you're not gambling on a random phenotype from a bag seed. The 70/30 indica-to-sativa ratio shows up clearly in the plant's structure: stocky, branchy, with fat calyxes that stack into dense colas by week six.
| Specification | Detail |
|---|---|
| Seed bank | Barney's Farm |
| Genetics | Chemdawg x Lemon Thai x Hindu Kush |
| Type | 70% Indica / 30% Sativa |
| THC | 23–26% |
| Flowering time | 55–65 days |
| Indoor height | Up to 120cm |
| Outdoor height | 150–250cm |
| Indoor yield | 550g/m² |
| Outdoor yield | Up to 1500g/plant |
| Harvest (outdoor) | Late September |
| Seed type | Feminised |
OG Kush performs well in both environments, but outdoors is where this strain truly shows off. Given space and sunlight, mature plants stretch to 150–250cm and can produce a staggering 1500g per plant — that's not a typo. Late September harvest means you need a climate that stays dry into early autumn; if you're in southern Europe or a Mediterranean-type zone, you're golden.
Indoors, OG Kush stays manageable at around 120cm. It responds well to topping and LST (low-stress training), filling out a SCROG net nicely. Expect 550g/m² under a proper light setup — we'd suggest a 600W HPS or equivalent LED for a 1.2m x 1.2m tent. The 55–65 day flowering window means you can flip to 12/12 and be trimming within two months. That's quick for a strain pulling 23–26% THC.
The one thing to watch: OG Kush can be a hungry feeder in the final weeks of flower. Those dense buds demand calcium and magnesium, especially under LED. If you see browning leaf tips in week five, bump your cal-mag slightly. Not a difficult strain by any means, but she rewards attention.
Open a jar of cured OG Kush and the room fills up. The dominant terpenes — myrcene, limonene, and caryophyllene — create a layered scent that's part fuel, part citrus peel, part damp earth. It's pungent in the best possible way. During flowering, a carbon filter isn't optional; your neighbours will know exactly what you're growing without one.
When smoked or vaped, the flavour translates directly from the nose. Thick, earthy smoke with a lemon-fuel bite on the exhale. The caryophyllene gives it a subtle peppery kick that lingers on the palate. If you've ever had a proper Kush and thought "that's what cannabis should taste like" — this is that experience, amplified.
Compared to something like Royal Gorilla or Amnesia Haze, OG Kush sits in a different flavour lane entirely. Less sweet, more savoury and complex. It's the strain you reach for when you want depth rather than candy.
At 23–26% THC with a 70% indica lean, OG Kush delivers a powerful, long-lasting body stone paired with an initial wave of mental uplift. The first few minutes bring a sense of calm contentment before the indica genetics take over and melt tension from your shoulders downward. This is an evening strain — don't plan on being productive afterwards.
According to a case study published in PMC (2020), a patient using OG Kush-derived cannabis oil reported subjective improvements in their condition, though this represents a single case and not controlled clinical evidence (PMC7086060). A separate study on cannabis-inspired terpene blends noted that OG Kush terpenes alone did not significantly reduce general anxiety in animal models (PMC10311644). The takeaway: the full cannabinoid-terpene combination matters more than isolated components.
Common side effects reported by users include dry mouth and dry eyes — standard with high-THC indicas. Start with a small amount if your tolerance is low; 23–26% THC is not beginner territory. According to harm-reduction guidelines, beginning with 2.5mg THC or less is advisable for inexperienced users.
Complete your OG Kush grow setup with a Dark Box grow tent for light-proof indoor cultivation, and pair it with a carbon filter to manage the seriously pungent terpene output during flowering. If you're growing in coco, a reliable pH meter saves you from lockout headaches — OG Kush is particularly sensitive to pH swings in the root zone.
| Strain | THC | Flowering | Indoor Yield | Character |
|---|---|---|---|---|
| OG Kush (Barney's Farm) | 23–26% | 55–65 days | 550g/m² | Fuel/earth/citrus, heavy body stone |
| Critical Kush | 20–25% | 56–63 days | 500–600g/m² | Sweeter, more sedative, less complex terpenes |
| Northern Lights | 18–22% | 50–55 days | 450–500g/m² | Classic indica, less pungent, faster finish |
If you want raw potency with a complex terpene profile, OG Kush is the pick. Northern Lights finishes faster and smells less — better for stealth grows. Critical Kush sits in between but leans sweeter on the palate. All three are solid; OG Kush is the one we'd grow if we could only choose one indica for the year.
Under optimised conditions with 550–600W of light in a 1.2m x 1.2m space, OG Kush produces around 550g/m². Topping and SCROG training maximise this potential. Without training, expect slightly less as the plant tends toward a dominant central cola.
OG Kush flowers in 55–65 days from the flip to 12/12 lighting. Most phenotypes finish closer to 60 days. Outdoor growers in the Northern Hemisphere harvest in late September.
OG Kush is moderately easy to grow. It's vigorous and forgiving of minor mistakes, but the dense buds can develop mould if humidity isn't controlled below 50% during late flower. Keep airflow strong and you'll be fine — it's not a fussy plant, just a hungry one.
Fuel, lemon peel, and damp earth — driven by myrcene, limonene, and caryophyllene. The smoke is thick and pungent with a peppery exhale. A carbon filter is non-negotiable during flowering unless you want the entire building to know your business.
Both contain identical feminised OG Kush seeds from Barney's Farm. The 5-pack gives you more plants to select from — useful if you want to find and clone the best phenotype. The 3-pack is enough for a single tent run with some variety alongside other strains.
At 23–26% THC, OG Kush sits in the high-potency bracket. It's stronger than Northern Lights (18–22%) and comparable to Gorilla Glue or Girl Scout Cookies. The indica dominance means the effect hits the body hard — not a strain for staying active.
Yes. Indoor plants max out at 120cm, and with topping they stay even shorter. A 60x60cm tent works for one plant; an 80x80cm comfortably fits two. The main concern in small spaces is odour management, not size.
Last updated: April 2026
Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.
