
Description
Colin OG RBX is built on a foundation of heavyweight OG genetics, crossing the Grateful Dawg, which carries the Dead Head OG cut from Irie Genetics, with a Grateful Dawg and The White hybrid to introduce resin density and structural refinement. The result is an indica-dominant variety with very high THC content above 25 percent, wrapped in a fruity aroma that softens the earthier OG backbone. Effects land with the settled, heavy-handed quality this lineage is known for, making for a genuinely immersive end-of-day experience.
Ethos Genetics has packaged this one as a feminised photoperiod, so growers can take their time developing vigorous plants before triggering flower. At medium height, Colin OG RBX fits comfortably into most indoor setups without demanding aggressive training, though some canopy management will help maximise its average indoor yield of 350 to 450 grams per square meter. The 9 to 11 week flowering window sits on the longer side, but the additional weeks pay off in resin accumulation and flavor development. Outdoor plants can deliver 200 to 450 grams per plant under the right conditions. This is a strain worth growing unhurried.
Colin OG RBX Feminized Seeds
Description:
A deeply indica-leaning OG from Ethos Genetics, Colin OG RBX carries the storied Grateful Dawg lineage into feminised form, delivering very high THC and a fruity character that rewards patient cultivators who let it run its full course.
Best For
Intermediate to experienced growers seeking a potent, relaxing body high
- Type
- Feminised – Photoperiod
- Genetics
- Grateful Dawg (Dead Head OG cut from Irie Genetics) x (Grateful Dawg x The White)
- THC / CBD
- Very High THC (25%+) / Low CBD (0-1%)
- Effects
- Relaxing,Couch-lock
- Flavour / Aroma
- Fruity
- Height
- Medium
- Yield
- Average Yield (200-450gr/plant) / Average Yield (350-450gr/m2)
- Flowering Time
- 9 to 11 weeks
- Difficulty
- Moderate to Advanced
FAQ
All you need to know
about this product
Colin OG RBX brings Grateful Dawg's heavyweight OG heritage into feminised form, rewarding patient growers with very high THC and a fruity, resin-loaded harvest.
This is a moderate-to-advanced cultivar best suited to intermediate or experienced growers who are comfortable managing a finicky photoperiod indica. It rewards those who understand environmental dialling and are willing to let it run its full 9 to 11 week flowering window without rushing the finish.
Colin OG RBX delivers a heavy, settled body effect that leans firmly into couch-lock territory, consistent with its deep indica dominance and 25%+ THC levels. It's the kind of experience that's best reserved for evenings when there's nowhere you need to be.
The nose and taste carry a notable fruity character that plays against the earthier, more classic OG backbone inherited from the Grateful Dawg lineage. The White genetics in the cross contribute to elevated resin production, which tends to amplify and concentrate those aromatic qualities as harvest approaches.
For an intermediate or experienced grower running a controlled indoor environment, five feminised seeds gives you enough to run a considered selection without the overhead of a larger pack. With indoor yields sitting in the 350–450g/m² range, even a modest run can return a meaningful harvest from this genetics.
You Might Also Like
Discover more
legendary genetics
Explore handpicked strains with similar flavors and traits — perfect for your next grow.

Peach Crescendo RF3 Auto Feminized Seeds
A fruit-forward autoflower with serious potency behind it, Peach Crescendo RF3 from Ethos Genetics layers ripe peach aromatics over a fuel-driven depth, with verified THC above 25 percent.

OG Kush Auto Feminized Seeds
A resinous indica-sativa hybrid from Ethos Genetics, OG Kush Auto brings classic '92 OG Kush heritage to an autoflowering format, delivering sharp pine and spice with a grounding, euphoric effect.

10th Planet R1 Feminized Seeds
A resin-drenched indica-leaning hybrid from Ethos Genetics, 10th Planet R1 delivers a complex fusion of grape, citrus, and thick skunky spice alongside a heavy, enveloping effect and exceptional yields.