UnderDawg OG
Cannabis seeds
by T.H. Seeds
UnderDawg OG Feminised Cannabis Seeds by T.H. Seeds
UnderDawg OG is a feminised Indica-dominant hybrid (60% Indica / 40% Sativa) from T.H. Seeds, bred directly from the legendary Chemdawg lineage. If you know Chemdawg's reputation for raw potency and that unmistakable fuel-forward funk, UnderDawg OG delivers exactly that — plus yields that border on absurd. We're talking up to 1 kg per plant outdoors under optimal conditions. That's not a typo.
Why UnderDawg OG Seeds Deserve a Spot in Your Grow
The Chemdawg family tree has produced some of the most sought-after genetics in cultivation — OG Kush, Sour Diesel, and now UnderDawg OG. T.H. Seeds, the Amsterdam-based seed bank that's been putting out solid genetics since the mid-'90s, developed this feminised hybrid to capture the full Chemdawg experience in a plant that's genuinely forgiving to grow. The name might suggest an underdog, but this strain punches well above its weight class.
What sets UnderDawg OG apart from its siblings is the combination of that bold, kushy flavour profile with a flowering time of just 7-8 weeks. That's fast for a plant capable of producing 450 g/m² indoors. Most strains make you choose between speed and yield — UnderDawg OG doesn't ask you to compromise. The buds come out dense, frosty, and absolutely caked in resin. When they're approaching maturity, the smell fills the room: pungent, fuel-soaked, with that deep earthy kush backbone that Chemdawg descendants are known for.
UnderDawg OG Growing Characteristics and Yield
UnderDawg OG is one of those strains we'd point newer growers towards without hesitation. She's resilient — minor feeding mistakes, a slightly off pH, a missed watering — none of it will tank your harvest the way it might with fussier genetics. That doesn't mean you should get sloppy, but it does mean the margin for error is wider than average. If you've killed a plant before by overfeeding (we've all been there), UnderDawg OG is the forgiving type.
Indoors, expect yields around 450 g/m² with a standard setup. She responds well to SOG and SCROG techniques given her Indica-dominant structure — stocky, with strong lateral branching. The flowering window sits at 7-8 weeks, which is genuinely quick for this level of production.
Outdoors is where things get properly impressive. Under optimal conditions — full sun, good soil, enough root space — a single UnderDawg OG plant can produce up to 1 kg of dried flower. That's the kind of number that makes seasoned outdoor growers raise an eyebrow, but T.H. Seeds stands behind it, and the Chemdawg genetics support that kind of vigour.
| Specification | Detail |
|---|---|
| Seed Bank | T.H. Seeds |
| Seed Type | Feminised |
| Genetics | Chemdawg lineage |
| Indica / Sativa | 60% Indica / 40% Sativa |
| Flowering Time | 7-8 weeks |
| Indoor Yield | Up to 450 g/m² |
| Outdoor Yield | Up to 1,000 g per plant |
| Seeds per Pack | 5 |
| Difficulty | Beginner-friendly |
| Growth Pattern | Stocky, strong lateral branching |
Aroma, Flavour, and Bud Structure of UnderDawg OG
This is where UnderDawg OG really earns its keep. The buds are dense, chunky, and covered in a thick layer of trichomes that makes them look like they've been rolled in sugar. Break one open and you get hit with that classic Chemdawg pungency — sharp, fuel-heavy, with an underlying earthy musk that clings to your fingers. It's the kind of smell that fills a room in seconds, so if discretion is your thing, a carbon filter isn't optional.
The flavour follows the nose closely: bold, kushy, with a diesel edge that sits on the palate. If you've smoked OG Kush or Sour Diesel, you'll recognise the family resemblance immediately. It's not subtle, and it's not trying to be. UnderDawg OG is for people who want that full-bodied, old-school Chemdawg experience without hunting down clone-only cuts.
The 60/40 Indica-Sativa split shows up in the effect profile too. The Indica dominance delivers a heavy, physical stone — the kind that pins you to the sofa and makes you forget what you were about to do. The 40% Sativa keeps things from going completely comatose, adding a layer of mental engagement before the body takes over. It's a solid evening strain. Don't plan anything ambitious after smoking this one.
UnderDawg OG Compared to Other Chemdawg Varieties
The Chemdawg family is massive, so how does UnderDawg OG stack up? Here's a quick comparison with two of its more famous relatives.
| Trait | UnderDawg OG | OG Kush | Sour Diesel |
|---|---|---|---|
| Indica / Sativa | 60/40 | 75/25 | 30/70 |
| Flowering Time | 7-8 weeks | 8-9 weeks | 10-11 weeks |
| Indoor Yield | Up to 450 g/m² | 350-400 g/m² | 400-500 g/m² |
| Grow Difficulty | Beginner-friendly | Intermediate | Intermediate-Advanced |
| Dominant Aroma | Pungent kush, diesel | Earthy, pine, lemon | Sharp diesel, citrus |
The standout advantage of UnderDawg OG is the combination of fast flowering, high yield, and low difficulty. OG Kush can be temperamental with feeding, and Sour Diesel takes 10-11 weeks to flower — nearly 50% longer. If you want Chemdawg genetics without the fuss, UnderDawg OG is the practical choice. That said, if you're chasing a more cerebral, Sativa-leaning effect, Sour Diesel is the better pick. Different tools for different jobs.
How to Grow UnderDawg OG Seeds
- Germinate your feminised UnderDawg OG seeds using the paper towel method or directly in a starter plug. Maintain a temperature of 22-25°C and keep the medium moist but not waterlogged. Taproots typically emerge within 24-72 hours.
- Transplant seedlings into their final containers once the first set of true leaves appears. A 15-20 litre pot works well for indoor grows. For outdoor plants aiming for maximum yield, go bigger — 50 litres or more gives the root system room to support that potential 1 kg harvest.
- During vegetative growth, maintain 18/6 light cycle indoors. UnderDawg OG's Indica-dominant structure means she stays relatively compact, but topping early encourages lateral branching and an even canopy — especially useful for SCROG setups.
- Switch to 12/12 to trigger flowering. The 7-8 week flowering window means you'll see buds developing rapidly from week 2 onwards. Feed with a bloom-specific nutrient schedule, but don't overdo it — this strain handles slight underfeeding better than overfeeding.
- Watch the trichomes during the final week. When they shift from clear to milky with around 10-20% amber, you're in the harvest window. Flush with plain water for the final 7-10 days to clean up the flavour profile.
- Dry slowly in a dark room at 18-21°C with 55-60% humidity for 10-14 days. Cure in glass jars for a minimum of 2 weeks — though 4-6 weeks brings out that deep kushy flavour properly.
The Honest Limitations
No strain is flawless, and UnderDawg OG has a couple of things worth knowing. First, the smell. During late flowering, this plant is loud. Properly loud. If you're growing indoors without a carbon filter, your entire flat will smell like a diesel refinery crossed with a pine forest. Budget for proper odour control.
Second, while the plant itself is forgiving, the 60% Indica dominance means she can be prone to denser bud structures that hold moisture. In humid climates or poorly ventilated grow spaces, keep an eye on airflow around the colas during the final weeks of flowering. A small oscillating fan pointed at canopy level goes a long way.
Third, the potency. This is a Chemdawg offspring — it hits hard. If you're growing for personal use and your tolerance is moderate, you won't need much. A little goes a long way with this one.
Complete your indoor setup with a grow tent and carbon filter — UnderDawg OG's pungent aroma during flowering makes odour control non-negotiable. Pair with a bloom-specific nutrient kit to push those yields towards the 450 g/m² mark.
Frequently Asked Questions
What is UnderDawg OG's flowering time?
UnderDawg OG flowers in 7-8 weeks indoors, which is fast for a strain with this yield potential. Outdoor plants typically finish by mid-October in the Northern Hemisphere.
How much does UnderDawg OG yield indoors?
Experienced growers can expect around 450 g/m² indoors. Outdoors, under optimal conditions with plenty of root space and direct sunlight, a single plant can produce up to 1 kg of dried flower.
Is UnderDawg OG suitable for beginner growers?
Yes. UnderDawg OG is forgiving of minor mistakes like slight over or underfeeding. She won't punish you for small errors the way more temperamental genetics will. A solid choice for your first or second grow.
What does UnderDawg OG smell and taste like?
Expect a pungent, fuel-heavy aroma with deep earthy kush undertones — classic Chemdawg territory. The flavour is bold and kushy with a diesel edge. It's not a subtle strain. Carbon filtration is strongly recommended for indoor grows.
What is the genetic lineage of UnderDawg OG?
UnderDawg OG is T.H. Seeds' feminised take on the original Chemdawg genetics. It sits alongside OG Kush and Sour Diesel as a direct Chemdawg descendant, carrying that same pungent, resinous character the family is known for.
Can UnderDawg OG be grown outdoors?
Absolutely. She performs well both indoors and out. Outdoor plants benefit from warm, sunny climates and large containers or open soil. The outdoor yield potential — up to 1 kg per plant — is one of her biggest selling points.
How does UnderDawg OG compare to OG Kush?
UnderDawg OG flowers faster (7-8 weeks vs 8-9), yields more (450 g/m² vs 350-400 g/m²), and is easier to grow. OG Kush leans heavier on the Indica side at 75/25 and can be fussier with nutrients. For a more forgiving Chemdawg experience, UnderDawg OG is the better bet.
Last updated: April 2026
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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.