About 303 OG
Pre-98 Bubba Kush crossed with Chemdawg produced 303 OG, and both parents show up clearly in the jar. The aroma is spicy and herbal with sweet undertones and a distinct citrus lift that comes from terpinolene, giving it a signature you will not confuse with the usual OG lineup. Underneath all of that sits a solid earthy base that carries well in the smoke.
Potency is the headline. At 26% THC with CBD under 2%, there is very little to soften the psychoactive side, which is exactly why experienced smokers gravitate to it and why newcomers should approach carefully. The genetics split evenly at 50% Indica and 50% Sativa, and that balance is what makes it work. Many growers report a fast onset with a bright, euphoric character that lifts the mind without dragging the body into a stupor, so it holds up as well in the morning as it does in the evening. The effects also run long, which means a little goes further than you might expect.
Growing 303 OG Feminized Seeds
Being photoperiod feminized, these plants stay in veg until you shorten the light cycle to 12 hours, and that is where you set the terms of the grow. Every extra week of veg buys more nodes, more bud sites and a heavier final weight, so growers chasing maximum return per plant have the room to push. If space is tight, flip early and 303 OG stays neat.
It is a forgiving plant for a strain this potent, which is why it suits both first-timers and veterans. The frame is naturally short and bushy, topping out near three feet tall and two feet wide, so it is a strong candidate for a compact tent or a low-ceiling room. That same structure takes well to topping and a SCROG net; spread the branches out and you convert the plant’s tendency to stay short into an even, well-lit canopy rather than one dominant cola.
Visually it is a rewarding grow. Expect large, dense green flowers threaded with orange hairs, set against sweet green foliage that darkens toward the base of the plant.
What to Expect
- Flowering time: 60 to 70 days from the flip
- Height: around 3 feet tall by 2 feet wide
- Yield: 300 to 350 g/m2 in warm conditions
- Difficulty: easy, beginner friendly to grow
The flowering window is on the longer side, but the plant packs bud sites densely once it turns, so the wait translates directly into weight. Keep temperatures warm and stable through bloom and 303 OG will finish strong.


Joe Brooks –
303 OG takes me on a mystical journey with its soothing vibes and impressive potency. A strain worth trying
Beverly Long –
303 OG is a gem! I purchased these seeds for their reputation, and they didn’t disappoint. The plants have flourished under my care, and the buds have a delightful earthy scent. The effects are exactly what I was hoping for—relaxing and soothing. I’m thrilled with my choice and will recommend it to others.
Julia Rodriquez –
Tried out 303 OG. As an intermediate grower, I expected a bit more from this strain. The seeds arrived on time, and the customer service was responsive, but the overall yield didn’t meet my expectations.