303 OG Strain Autoflower Seeds
From $39.00
Pre-98 Bubba Kush crossed with Chemdawg, an even indica and sativa split. Herbal and peppery notes hit first with sweet citrus underneath from the terpinolene. The effect is euphoric and clear-headed, and at 26% THC it makes a poor first strain.
Autoflower seeds finishing in eight to ten weeks. Plants stay under a metre, so a closet or a small tent is enough room. Free shipping over $99 to Canada and the USA, discreetly packed.
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About 303 OG
Herbal and peppery notes hit first on 303 OG, with a sweet citrus note sitting underneath that comes from its terpinolene content. It is a loud strain in the jar and a loud one on the palate, the herbal Sativa side and the peppery edge stacking into a flavour that is hard to mistake for anything else. Expect strong earthy aromas through the back end of the grow.
The lineage is Pre-98 Bubba Kush crossed with Chemdawg, which lands it at a genuine 50% Indica / 50% Sativa split. THC is high at 26% with CBD under 2%, so nothing dulls the edge of it. Onset is fast and the effect runs long, euphoric and clear-headed rather than flattening, and many growers report reaching for it before chores or a workout instead of at the end of the night. Given the potency, it is a poor first strain for someone new to smoking.
Growing 303 OG Autoflower Seeds
This is an autoflowering line, so flowering triggers on the plant’s age rather than on the light schedule. You never flip to 12/12, you never juggle two rooms, and the whole run is short enough that a mistake in week one is the only kind that really costs you. Sow into the pot the plant will finish in, keep the light at 18 to 20 hours throughout, and resist heavy training.
It grows easily and suits both first-timers and experienced growers. The real advantage here is footprint. 303 OG Autoflower tops out around 3 feet tall and 2 feet wide, which fits a closet, a small tent or a balcony corner without any height management at all. Because the timing is fixed by genetics rather than by season, Canadian growers can start a second and even a third sowing while the first is still in flower and pull staggered harvests through the warm months.
Structure-wise you get dense green buds shot through with orange hairs on sweet green foliage that darkens toward the base of the plant.
What to Expect
- Seed to harvest: 60 to 70 days
- Height: about 90 cm tall, 60 cm wide
- Yield: 300 to 350 g/m² in a warm, stable environment
- Difficulty: easy, forgiving enough for a first grow if you can handle the potency
Those are solid numbers for a plant this compact and this quick, which is exactly why the auto version earns its place in small spaces.
| Number of Seeds | 3 Seeds, 5 Seeds, 10 Seeds, 20 Seeds |
|---|---|
| Genetics | Chemdawg x Pre-98 Bubba Kush |
| Indica / Sativa | Indica-dominant (~80% Indica) |
| Strain Type | Autoflower Seeds |
| THC Content | 26% THC |
| Flowering Time | 8-10 weeks |
| Outdoor Yield | 350 g per plant |
| Grows | Indoor/Outdoor |
| Plant Height | Short (60-100 cm) |
6 reviews for 303 OG Strain Autoflower Seeds
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This is an autoflowering cannabis seed — it will begin flowering automatically 3-4 weeks after germination, regardless of light schedule. Autoflowers are the fastest and simplest way to grow cannabis at home.
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Douglas Campbell –
Growing the 303 OG Autoflower seeds was a smooth and rewarding process. The plants were sturdy and thrived in my setup, producing dense, resin-coated buds. The aroma is a mix of earthy pine and a hint of citrus. The effects are deeply relaxing, perfect for winding down in the evening. Overall, a top-tier strain for anyone looking for quality and ease in cultivation.
Ethan R. –
303 OG really stands out with its spicy and citrus-heavy aroma. The high kicks in fast and feels very balanced uplifting but still relaxing. I stayed focused and productive without feeling tired. Excellent strain quality from The Seed Pharm.
Marcus L. –
This strain is powerful but clean. The effects are long-lasting and very euphoric, especially great for headaches and mental stress. The flavor is bold and earthy with a nice citrus edge. Definitely one for experienced users.
Oliver B. –
I loved how energizing yet calming 303 OG feels. It boosted my creativity and motivation without making me anxious. The buds grew dense and beautiful, even in a small indoor setup. Very happy with the results.
Dylan S. –
The balance between Indica and Sativa is spot on. I felt relaxed in my body but sharp and alert mentally. Great for daytime use or before creative work. Strong aroma but very enjoyable smoke.
Connor W. –
Surprisingly easy to grow for such a strong strain. The plants stayed compact and delivered solid yields. Effects are uplifting, happy, and long-lasting. This one quickly became a favorite in my collection.