10th Planet R1 is a feminized photoperiod from Ethos Genetics that feels built for growers who measure a harvest by the weight of the jar. It pairs the grape-heavy Planet of the Grapes R1 with the so-called Pluto Cut of Quattro Kush, and the result is a squat, chunky plant that packs bract-stacked buds from top to bottom with almost no sugar leaf to clean up.
The nose is pure outer space: ripe grape and bright citrus sit on top of a raw gasoline core, with a thick skunky spice that hangs in the air long after the tent door closes. Ethos rates this one at TAC up to 30% (Total Active Cannabinoids), and the effect lands on the heavier side of a classic hybrid.
At roughly 56-60 days of bloom, it is one of the quicker finishers among Ethos Genetics seeds.
Lineage and Breeding: Grapes Meet Quattro Kush
The mother side, Planet of the Grapes R1, brings the purple-fruit terpene load and the dense flower structure that Ethos keeps returning to in its grape work. The father side is a select cut of Quattro Kush known as the Pluto Cut, a Kush line prized for gassy funk and a thick, heavy body.
The R1 tag is an Ethos generation code. It marks the first reversed-female feminized generation: a selected female is coaxed into producing pollen, and that pollen goes onto another female, so the seeds come out feminized. That is a big part of why Ethos seeds are popular with pheno hunters looking for a keeper.
Aroma, Flavor and Effect
Grind a dried bud and the first wave is sweet grape candy laced with citrus peel. Right behind it comes the gas: sharp, solvent-like and loud enough to fill a room. The finish brings the Quattro Kush side, a thick, skunky spice that lingers on the exhale.
The effect leans heavy. Ethos describes it as an intense, classic hybrid with an indica tilt, so expect a strong body presence that settles in quickly while the head stays engaged for the first stretch of the session. It suits evenings more than busy mornings.
Growing 10th Planet R1 Indoors and Outdoors
Indoors, plants stay at a medium height with medium internode spacing and a moderate stretch after the flip, so a single topping and some LST is usually enough to build an even canopy. The real story is the bud structure: flowers are very bract-heavy with bare minimum leaves, which means trimming is fast and almost everything on the branch is usable.
Those chunky, dense colas carry serious weight, so plan for stakes, a trellis or a SCROG net by the middle of flowering. Keep airflow strong late in bloom. Ethos rates the yield as chunky and plentiful in any system or space, from soil to coco to hydro.
Outdoors and in greenhouses, the quick 56-60 day bloom helps the plant finish ahead of late-season weather. It thrives in indoor, greenhouse and outdoor setups alike, and the grow level sits at intermediate to pro, mainly because the heavy flowers reward growers who dial in support, airflow and feeding.
10th Planet R1 Characteristics
| Strain type | Feminized photoperiod |
| Generation | R1 (first reversed-female feminized generation) |
| Genetics | Planet of the Grapes R1 x Quattro Kush (Pluto Cut) |
| TAC | Up to 30% |
| Effect | Heavy classic hybrid, indica-leaning |
| Aroma/Terpenes | Citrus and grape, gasoline, skunky spice |
| Yield | High, chunky and dense |
| Flowering time | 56-60 days |
| Height | Medium, with medium stretch |
| Grow level | Intermediate to pro |
| Ideal environment | Indoor, greenhouse and outdoor |
| Best cultivation technique | Topping, LST and SCROG support for heavy colas |
FAQ
What is the 10th Planet R1 strain?
10th Planet R1 is a feminized photoperiod from Ethos Genetics that crosses Planet of the Grapes R1 with the Pluto Cut of Quattro Kush. It combines grape, citrus and gasoline aromas with a thick, skunky spice and a heavy hybrid effect.
What does R1 mean in 10th Planet R1?
R1 is the first reversed-female feminized generation. A selected female is reversed to make pollen, which is then used on another female, so the resulting seeds are feminized and carry traits from both parents.
How long does 10th Planet R1 take to flower?
Flowering runs about 56-60 days after the switch to 12/12, which is on the fast side for a heavy-yielding photoperiod and helps outdoor plants finish before cold, wet weather.
How much TAC does 10th Planet R1 produce?
Ethos rates 10th Planet R1 at TAC up to 30%. TAC stands for Total Active Cannabinoids, so the figure covers the full cannabinoid content rather than a single compound.
Is 10th Planet R1 easy to trim?
Yes. The flowers are very bract-heavy with only a bare minimum of leaves, so trimming goes quickly and very little of each bud ends up as trim.
Can 10th Planet R1 be grown outdoors?
It does well indoors, in greenhouses and outdoors. The short flowering window is a real advantage outside, and staking the dense colas keeps branches from bending under their own weight.
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