The OG #18 Feminized Seeds – DNA Genetics’ Legendary OG Kush Hybrid

The OG #18 feminized seeds by DNA Genetics are your ticket to cultivating one of the most influential OG Kush hybrids in cannabis history—renowned for its resin production, complex aroma, and rapid flowering cycle.

Struggling to find a strain that balances legendary lineage, manageable growth, and knockout potency without dragging on for months? You’re not alone. Many growers chase the mythical OG profile but end up with finicky plants, weak yields, or endless waits.

Ignoring this problem means wasted time, space, and nutrients on underperforming genetics—while your dream harvest stays out of reach. You deserve a strain that delivers on its hype without the headache.

Enter The OG #18: a stabilized, feminized version of the multi-award-winning original. Bred by DNA Genetics from elite OG Kush stock, it’s engineered for reliability, speed, and that unmistakable OG punch—making it a staple in any serious grower’s collection.

Why The OG #18 belongs in your next grow cycle

This isn’t just another Kush—it’s the genetic backbone behind Holy Grail Kush and countless other champions. With its compact structure and explosive resin production, The OG #18 thrives in controlled environments and rewards attentive care with dense, trichome-caked buds that reek of pine, fuel, and earth.

Key features and benefits in a nutshell

• 8–9 week flowering → 4–5 harvests per year indoors, perfect for fast turnover.
• 400–500 g/m² (13.1–16.4 oz/ft²) → high yields without excessive height or stretch.
• Indica-dominant (60% indica / 40% sativa) → balanced body relaxation with clear-headed calm.
• Very high THC (20–27%) → intense, long-lasting effects ideal for evening wind-down.
• Compact, bushy structure → ideal for SCROG or small tents; responds well to LST.
• Strong OG aroma profile → pine, diesel, and earthy notes that demand a carbon filter.

How to grow The OG #18 successfully

Start strong and finish cleaner with these streamlined steps:

1. Germinate in a Try-Pack Kit for 3 Plants for optimal moisture and warmth.
2. Transplant early into 11–15 L (2.9–4 gal) pots with airy soil or coco.
3. Run 18/6 light during veg; switch to 12/12 to trigger flowering.
4. Maintain 20–25°C (68–77°F) and 40–50% RH in flower to prevent mold.
5. Flush 7–10 days before harvest for smoother smoke and purer flavor.

Technical specifications

• Breeder: DNA Genetics
• Type: Feminized photoperiod
• Genetics: OG Kush (elite clone #18)
• Dominance: 60% Indica / 40% Sativa
• Flowering time (indoor): 8–9 weeks
• Yield (indoor): 400–500 g/m² (13.1–16.4 oz/ft²)
• Plant height (indoor): 0.80–1.10 m (2.62–3.61 ft)
• THC: 20–27% (approx.)
• CBD: Low (
• Aroma: Pine, diesel, earth, citrus undertones
• Effect: Relaxing, euphoric, body-heavy—best for evening use
• Smell during grow: High (carbon filter strongly recommended)
• Difficulty: Medium (tolerant but benefits from stable conditions)
• Ideal climate: Mediterranean or controlled indoor; moderate humidity tolerance

Frequently Asked Questions

Is The OG #18 good for beginners?

It’s manageable for beginners who can control temperature and humidity, but its strong aroma and nutrient sensitivity make it better suited for growers with basic experience.

Can I grow it outdoors?

Yes—in warm, dry climates with a long summer. Harvest in late September (Northern Hemisphere). Avoid humid regions due to dense bud structure.

Does it need a lot of nutrients?

It’s moderately hungry. Start light and increase gradually. Avoid excess nitrogen in flowering—use a balanced bloom booster like Ultimate PK in mid-flower for resin boost.

How does it compare to Holy Grail Kush?

Holy Grail Kush is a cross of The OG #18 and Kosher Kush. The OG #18 is the original, purer OG expression—more fuel-forward and slightly faster finishing.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown The OG #18 three times in my 1m² tent, and it never fails to impress. The first run, I used a basic soil mix and got 420 g/m²—decent, but the terps were muted. The second time, I added Root Juice BioBizz from day one, and the difference was night and day: thicker stems, earlier resin production, and that classic OG stink filling the room by week 5.

My tip? Don’t overfeed. This strain shows nutrient burn fast. I run it at 80% of standard feeding schedules and top it once during veg to encourage side colas. The buds are so dense they need support—bamboo stakes or a SCROG net are non-negotiable. When cured right, the smoke is smooth, heavy, and deeply calming. It’s not flashy, but it’s reliable, potent, and undeniably OG. A true workhorse for connoisseurs.