RS11 Strain Feminized Marijuana Seeds

Where RS11 comes from

RS11 strain is a cross of Pink Guava and OZK, a pairing that sits in the wider Sunset Sherbert family and was selected in California around 2021. The full name is Rainbow Sherbert #11, and the number is the part people get wrong: it marks the eleventh plant kept from a selection run, not an eleventh generation or an eleventh cross. That is also why RS11 and the older Rainbow Sherbert are related but not the same strain.

Its reputation was built on appearance and flavour. The buds are pale, dense and so heavily frosted that they look dusted with sugar, and the smell is tropical in a way very few strains manage: guava and sherbet rather than the usual berry or citrus. It leans indica at roughly 70/30, and the plant is medium sized with a habit of putting its best flower on the outer branches.

RS11 strain effects and experience

RS11 is unusual in how it splits. The body goes calm and quite heavy within the first half hour, and the head stays clear. Most people describe sitting still very comfortably while still following a conversation or a film properly, which is not how a 70% indica normally behaves.

The potency range is wide, 22% to 30%, and the upper end is genuinely strong. Because the head stays clear it is easy to underestimate how much the body has taken on, so start small and wait twenty minutes.

RS11 flavour, aroma and appearance

The nose is tropical fruit first, guava and a little mango, then a creamy sherbet sweetness, then a bright citrus zest and a thin gassy edge at the back. On the smoke it is candy sweet on the inhale with a spicy, peppery exhale, and the aftertaste is closer to sorbet than to dessert cream. Limonene and myrcene lead the terpene mix with caryophyllene behind them, which is where the pepper comes from.

Visually it is one of the most distinctive plants in the catalogue: chunky, rounded buds in pale sage and dusty pink, laced with violet where the nights get cold, and a trichome coat so thick and even that a dried bud reads as grey from a metre away.

Growing RS11 in Canada

Indoors

Give it a four to five week veg and flip at 45 to 55 cm; the stretch is about 1.6 times to a finished 90 to 140 cm. It feeds moderately and shows calcium deficiency before anything else, so keep Cal-Mag in the mix from the start of flower rather than adding it in a panic at week four. Run 23 to 27 degrees in the day with a five to seven degree night drop in the last three weeks for the pink and violet tones. The buds are dense and the resin makes them slow to dry internally, so 45% humidity from week five and air moving through the canopy are both necessary. Flower runs 56 to 63 days.

Outdoors, by region

The 8 to 9 week flower makes this workable across most of the country, with one condition: it hates a wet finish more than it hates a cold one. Coastal BC and southern Ontario harvest in the last week of September or the first week of October and should keep a cover ready. Quebec and the Maritimes manage it in a sunny, sheltered, well drained spot with a late May transplant. Prairie growers should start indoors in April and plant out in late May for a late September harvest, and the dry Prairie autumn actually suits the dense buds better than a coastal one does.

Height and training

Training is not optional with RS11 if you care about the number at the end. Left to grow naturally it makes one good central cola and a skirt of thin, underdeveloped branches, and the reported yields of 450 g/m² and up come from growers who topped once, spread the plant flat with low stress training and filled a screen. Our low stress training guide covers the technique; on this plant it is the difference between a moderate harvest and a good one. Add a second net at week three of flower, because the colas get heavy.

Flowering and harvest cues

The frost arrives early and makes the plant look ready long before it is. Ignore the sparkle and check the trichome heads from day 54: fully cloudy with the first few amber, usually day 58 to 63, keeps the tropical fruit intact, while going further trades the guava for a heavier, gassier smoke. Hang whole branches and dry cool, 16 to 18 degrees for 12 to 14 days, because the resin content makes wet trimming a sticky and wasteful exercise. Three weeks of cure sharpens the citrus and the gas together.

RS11 yield indoors and outdoors

Indoors, a properly trained canopy returns 400 to 500 g/m²; an untrained plant in the same space will give noticeably less, which is the main complaint growers have about this strain and the main thing they can fix. Outdoors a full-season plant gives 500 to 600 g dried. Where RS11 pulls ahead is in extraction: the trichome coverage is exceptional, the heads are uniform, and rosin returns are among the best of any strain in this batch, so the effective yield per plant is higher than the dry flower weight suggests.

Who RS11 is for, and who should pick something else

Grow RS11 if you want tropical fruit flavour rather than another cookie or gas cross, if you press rosin, or if you like a strain that relaxes the body without clouding the head. It suits a grower on their second or third run who is comfortable filling a screen.

Pick something else if you would rather not train, where Blueberry Hashplant gives a decent harvest with almost no intervention; if your autumn is reliably wet and you garden outdoors; or if you want a heavier, sleepier evening strain.

How RS11 compares

Rainbow Sherbert is the strain RS11 is most often confused with: related through the Sherbert side, but sweeter, more berry-led and a step down in both potency and resin. Sunset Sherbet sits further back in the family and is the lighter, more balanced ancestor of the whole group. Zoap is the closest sibling we stock, sharing the Pink Guava side and trading the guava for a soapy floral sweetness. Among our indica feminized seeds RS11 is the resin pick, and it sits near the top of our high THC seeds guide.

Frequently asked questions about RS11

Is RS11 the same as Rainbow Sherbert?

No. RS11 stands for Rainbow Sherbert #11, which is the eleventh plant kept from a selection run rather than a version of the older Rainbow Sherbert, and its parents are Pink Guava and OZK. The two are related through the Sherbert side of the family but taste and grow differently: RS11 is more tropical, more resinous and stronger.

Is RS11 indica or sativa?

RS11 is an indica dominant hybrid, roughly 70% indica and 30% sativa. The body effect is heavy and arrives in the first half hour, but the head stays noticeably clear, so it does not behave like a typical heavy indica. The plant is medium sized and needs training to fill a canopy.

How strong is RS11?

RS11 tests between 22% and 30% THC with CBD under 0.5%, and the top phenotypes are as strong as anything we sell. Because the mental side stays clear, the strength is easy to underestimate for the first twenty minutes, so start small. CBD is negligible.

What does RS11 taste like?

Guava and tropical fruit first, then a creamy sherbet sweetness, citrus zest and a thin gassy edge on the exhale. The dominant terpenes are limonene and myrcene with caryophyllene giving a peppery finish. Harvesting at fully cloudy trichomes keeps the fruit; a later cut trades it for a heavier, gassier smoke.