OG Kush Rbx Auto is the result of a long project at Ethos Genetics. Work on it began back in 2008, with one goal: an autoflower that keeps the strength and complexity of its photoperiod cousins. The breeder says it has finally come to fruition, and that it is close to cup quality.
The cross is ’92 OG Kush x DieselRyder, refined through a reversed backcross. It is easy to grow, fast to flower, and finishes in about 70 to 80 days from seed. The yield is rated high, and the breeder lists a Total Active Cannabinoids range of up to TAC 25%.
Expect classic OG character: petrol, pine, and spice, with euphoric, relaxing effects. If you want the OG Kush strain without managing a light change, this is one of the most approachable Ethos seeds in the auto range.
Lineage: ’92 OG Kush x DieselRyder, Rbx
The photoperiod parent is a ’92 OG Kush, a cut from the early-nineties OG era known for its fuel-and-pine nose and dense, resinous flowers. The auto side is DieselRyder, a well-known autoflower that brings the day-neutral trait and fast finishing time.
Rbx stands for reversed backcross. Ethos crossed the auto offspring back toward the OG side using reversed females, so every seed is feminized and the plant holds more of the OG Kush profile while still flowering on its own. This steady, multi-year selection is typical of Ethos cannabis genetics.
Aroma, Flavor, and Effect
The terpene sheet reads petrol, pine, and spices, and Ethos tags the families as gassy and pine. It is the familiar OG bouquet: sharp fuel up front, forest pine in the middle, and a warm spice note on the finish.
The flavor follows suit, with a gassy inhale and a piney, peppery exhale that lingers. A slow dry and careful cure bring out the depth the breeder spent years chasing.
Ethos describes the effects as euphoric and relaxing and places them between classic indica and classic hybrid. It is a good match for winding down after work, a movie night, or an unhurried evening with friends.
Growing OG Kush Rbx Auto Indoors and Outdoors
Indoors, run the lights on 18/6 or 20/4 throughout. As an autoflower, the plant shifts into bloom by itself after a few weeks of growth, with no 12/12 switch needed. Plants grow to a medium or tall height with medium to long internodes, so give them some vertical room.
Ethos rates it for every level, from beginner to pro. Sow directly into the final container, keep feeding light during the first weeks, and increase gradually as flowers form. Early LST spreads the branches and evens out the canopy, and good airflow protects the dense OG-style flowers late in bloom.
The breeder lists indoor, greenhouse, and outdoor as ideal environments and says it thrives in all of them. Outdoors, the 70-to-80-day cycle fits easily into a US summer and often allows a second run. Pick a sunny spot, use good soil, and expect a high yield rating to show up at harvest.
OG Kush Rbx Auto Characteristics
| Strain type | Feminized autoflower |
| Generation | Rbx (reversed backcross) |
| Genetics | ’92 OG Kush x DieselRyder |
| TAC | Up to 25% (Total Active Cannabinoids) |
| Effect | Classic indica/hybrid: euphoric and relaxing |
| Aroma/Terpenes | Petrol, pine, spices |
| Yield | High |
| Seed to harvest | 70-80 days |
| Height | Medium to tall, medium to long internodes |
| Grow level | Beginner to pro |
| Ideal environment | Indoor, greenhouse, outdoor |
| Best cultivation technique | Early LST under 18/6 or 20/4 light |
FAQ
What is OG Kush Rbx Auto bred from?
Ethos Genetics crossed a ’92 OG Kush with DieselRyder and refined the line through a reversed backcross.
What does Rbx mean?
Rbx means reversed backcross. The auto offspring was crossed back toward the OG Kush side using reversed females, so the seeds are feminized and keep more OG character.
How long does OG Kush Rbx Auto take from seed to harvest?
About 70 to 80 days. It flowers on its own, so no light change is needed.
What does this OG Kush strain smell like?
Expect petrol, pine, and spice, the classic gassy OG bouquet.
Is OG Kush Rbx Auto good for beginners?
Yes. Ethos rates it for every grow level and describes it as easy to grow and fast to flower.
How long did Ethos work on this autoflower?
The project started in 2008, with the aim of matching the strength and complexity of photoperiod OG Kush.



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