Lilac Diesel Rbx2 Auto puts one of the signature Ethos Genetics lines on an autoflowering clock. Bred from Lilac Diesel #22 x Pluto Auto and refined through a second reversed backcross, it grows into large, vigorous plants stacked with big flowers.
Ethos calls it a truly special auto with boutique-quality aromas of sweet haze, dry florals, lemon, and pine. The life cycle runs 70 to 80 days from seed, the yield is rated extremely high, and the breeder lists a Total Active Cannabinoids range of up to TAC 25%.
The Lilac Diesel strain is one of the names most closely tied to Ethos seeds, and this Rbx2 version makes it accessible to growers who want photoperiod-style quality without managing a light change.
Lineage: Lilac Diesel #22 x Pluto Auto, Rbx2
The photoperiod side is Lilac Diesel #22, a selected cut from the Lilac Diesel line that helped define Ethos cannabis genetics. The auto side is Pluto Auto, which supplies the day-neutral flowering trait and helps keep the life cycle short.
Rbx2 means a second reversed backcross. Ethos crossed the auto offspring back toward the Lilac Diesel side twice, using reversed females, so the seeds are feminized and the plant holds more of the original Lilac Diesel character in aroma, structure, and flower quality while still flowering on its own.
Aroma, Flavor, and Effect
The nose blends sweet haze with dry floral notes, then turns bright with lemon and crisp pine. Ethos tags the terpene families as floral, lemon-lime, berry, and spice, so expect a layered jar that shifts as it breathes.
On the palate, sweet hazy tones lead into a floral middle and a clean lemon-pine finish. The breeder calls the terpenes pungent, so plan for odor control during bloom.
Ethos describes the effect as mood-lifting and physically relaxing, a true mind and body experience. The taxonomy places it between classic hybrid and classic sativa, so the uplift comes first with a gentle body ease underneath.
Growing Lilac Diesel Rbx2 Auto Indoors and Outdoors
These are large, vigorous autos with a tall frame and medium to long internodes, so give them headroom. Indoors, run 18/6 or 20/4 from germination to harvest; the plant flips to flower by itself, so 12/12 is never needed.
Sow straight into a large final container to protect the short veg window. Early LST spreads the canopy and helps the many flower sites fill out evenly. Feed steadily through bloom to support the extremely high yield rating, and keep airflow strong as those big flowers stack up.
Ethos lists indoor, greenhouse, and outdoor as ideal environments and says it thrives in both settings. Outdoors, the 70-to-80-day cycle allows multiple runs in many US regions. Full sun and good root space help these vigorous plants reach their full size.
Lilac Diesel Rbx2 Auto Characteristics
| Strain type | Feminized autoflower |
| Generation | Rbx2 (second reversed backcross) |
| Genetics | Lilac Diesel #22 x Pluto Auto |
| TAC | Up to 25% (Total Active Cannabinoids) |
| Effect | Classic hybrid/sativa: mood-lifting mind, relaxed body |
| Aroma/Terpenes | Sweet haze, dry floral, lemon, pine |
| Yield | Extremely high |
| Seed to harvest | 70-80 days |
| Height | Tall, vigorous, medium to long internodes |
| Grow level | Beginner friendly; rated up to pro |
| Ideal environment | Indoor, greenhouse, outdoor |
| Best cultivation technique | Early LST in a large final pot under 18/6 or 20/4 light |
FAQ
What is the lineage of Lilac Diesel Rbx2 Auto?
Ethos Genetics bred it from Lilac Diesel #22 x Pluto Auto, then refined the line through a second reversed backcross.
What does Rbx2 mean?
Rbx2 means a second reversed backcross. The auto offspring was crossed back toward the Lilac Diesel side twice using reversed females, which keeps the seeds feminized.
How does the Lilac Diesel strain smell in this auto version?
Expect sweet haze and dry florals, brightened by lemon and pine.
How long does it take to grow?
About 70 to 80 days from seed to harvest. The plant starts flowering by itself, with no light change.
How big does Lilac Diesel Rbx2 Auto grow?
It forms large, vigorous plants with a tall frame, so leave headroom and use a roomy final container.
What effect does it have?
Ethos describes it as mood-lifting and physically relaxing, a balanced mind and body experience.
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