
Description
Toasted R1 from Ethos Genetics is the result of crossing East Coast Sour Diesel with Marshmallow OG, a pairing that delivers the sharp, fuel-driven edge of ECSD softened by a distinct floral sweetness from the Marshmallow OG side. The effect profile sits firmly in very high THC territory, above 25%, producing a powerful, enveloping experience that carries the character of both parent lines.
For cultivators, Toasted R1 is a genuinely rewarding photoperiod feminised plant. Indoor growers can expect above 600 g/m2, and outdoor plants are capable of exceeding 750 g per plant, figures that put this strain among the most productive options in the Ethos catalog. Plants stay at a medium height, making them manageable in a tent or greenhouse without sacrificing canopy development. The 9 to 11 week flowering window gives growers room to dial in timing, and the longer end of that range suits those who want to push yield and potency to their ceiling. A well-fed, well-trained Toasted R1 will reward the attention.
Toasted R1 Feminized Seeds
Description:
A floral, gassy hybrid with very high THC from Ethos Genetics, Toasted R1 brings together East Coast Sour Diesel and Marshmallow OG into a rewarding photoperiod feminised strain built for serious harvests.
Best For
Intermediate to experienced growers seeking a potent, balanced euphoric high
- Type
- Feminised – Photoperiod
- Genetics
- ECSD x Marshmallow OG
- THC / CBD
- Very High THC (25%+) / Low CBD (0-1%)
- Effects
- Potent,Uplifting
- Flavour / Aroma
- Floral,Gassy
- Height
- Medium
- Yield
- Very High Yield (above 750gr/plant) / Very High Yield (above 600gr/m2)
- Flowering Time
- 9 to 11 weeks
- Difficulty
- Easy to Moderate
FAQ
All you need to know
about this product
Toasted R1 brings the fuel-driven depth of East Coast Sour Diesel and floral warmth of Marshmallow OG together, ready for growers who expect very high yields and serious potency.
With THC consistently above 25%, Toasted R1 delivers a potent, enveloping experience that draws from both parent lines — the energetic, sharp character of East Coast Sour Diesel balanced by the softer, more rounded qualities of Marshmallow OG. The overall effect is uplifting but powerful, best appreciated by those already comfortable with high-THC cultivars.
Indoor cultivation can return above 600 g/m2 under optimised conditions, while outdoor plants are capable of exceeding 750 g per plant — figures that place Toasted R1 firmly among the most productive photoperiod feminised options available. Its medium height makes managing canopy space indoors relatively straightforward.
The flavour and aroma profile is a distinctive blend of gassy, fuel-driven sharpness inherited from the East Coast Sour Diesel side, layered with a floral sweetness that comes through from the Marshmallow OG genetics. The two notes complement rather than compete, giving the finished product a complexity that stands out from more one-dimensional hybrids.
Rated easy to moderate in difficulty, Toasted R1 is best suited to intermediate or experienced growers who understand photoperiod light management and can optimise conditions to realise its considerable yield potential. A complete beginner could manage it, but getting the most from this strain rewards growers who already have a few cycles under their belt.
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.