Rainbow Sherbet #11

Rainbow Sherbet #11 Cannabis Seeds by Kannabia

Rainbow Sherbet #11 is a feminised cannabis seed strain from Kannabia that crosses Pink Guava with Sunset Sherbet to produce an indica-dominant hybrid (70% indica) with a reported THC content of 30% or more. That's not a typo — this is one of the most potent strains we've come across in the Kannabia catalogue, and the flavour profile backs up the firepower with a sweet, fruity, citrus-forward bouquet that genuinely lives up to the sherbet name.

Why Rainbow Sherbet #11 Seeds Deserve a Spot in Your Grow

Thirty percent THC is the kind of number that makes you double-check the data sheet. Most strains marketed as "potent" hover around 20–25%, so Rainbow Sherbet #11 sits firmly in the top tier. Kannabia achieved this by crossing two already impressive parents: Pink Guava, known for its tropical terpene profile, and Sunset Sherbet, a Cookies-family descendant that brings the creamy, dessert-like sweetness. The result is a strain that hits hard and tastes like something you'd order from a fruit stand.

But raw potency isn't the whole story. What we genuinely appreciate about this strain is how forgiving it is to grow. The plants are vigorous and sturdy — the kind that shrug off minor mistakes in watering or feeding without throwing a tantrum. Kannabia lists this as suitable for growers of all experience levels, and from what we've seen, that checks out. The indica-dominant structure keeps plants compact enough for indoor tents without needing aggressive training, though a bit of low-stress training (LST) will open up the canopy and push yields towards that 500g/m² ceiling.

The honest limitation? A 9-week flowering period is on the longer side for an indica-dominant plant. If you're used to fast-finishing strains that wrap up in 7 weeks, you'll need a bit more patience here. That said, the extra time pays off — those final two weeks are when the trichome production really ramps up and the buds develop that thick, frosty coating that makes this strain look as good as it smells.

Aroma, Flavour, and What to Expect from Rainbow Sherbet #11

The terpene profile on Rainbow Sherbet #11 is layered in a way that rewards slow appreciation. The dominant notes are cherry and mixed berries — sweet and immediately recognisable when you crack open a cured jar. Underneath that fruit-forward first impression sits a citrus sharpness, like lemon zest grated over the top. Then the base notes come through: earthy, slightly spicy, with a whisper of pine. It's a complex bouquet, and it changes character depending on how you consume it.

Visually, these plants are proper lookers. The flowers can develop blue and purple hues during the final weeks of flowering, especially if nighttime temperatures drop a few degrees. Combined with the dense trichome coverage — we're talking a visible white frost across every surface — the finished buds look almost too pretty to trim. Almost.

With 30%+ THC, the effects come on with authority. Kannabia describes the experience as uplifting and creative initially, followed by soothing physical relaxation — consistent with what you'd expect from a 70/30 indica-dominant hybrid. This isn't a strain for casual afternoon use if you've got things to do. It's one to save for when you can properly sit with it.

How to Grow Rainbow Sherbet #11

1. Germinate your feminised seeds using the paper towel method or directly in a starter plug. Keep temperatures between 22–26°C and maintain consistent moisture until taproots emerge — typically within 24–72 hours.
2. Transplant seedlings into their growing medium once they've developed their first set of true leaves. Rainbow Sherbet #11 performs well in both soil and coco coir. Start with small pots (0.5–1L) and transplant up as roots fill out.
3. During the vegetative phase, maintain 18 hours of light and 6 hours of darkness. The plants grow vigorously with a compact, indica-typical structure. Apply LST by gently bending and tying down the main stem to create an even canopy — this exposes lower bud sites to light and can significantly increase your final yield.
4. Switch to a 12/12 light cycle to trigger flowering. The flowering period runs approximately 9 weeks. Watch for the blue and purple hues to develop in the final 2–3 weeks, particularly if you allow a slight temperature drop at night (around 18–20°C).
5. Monitor trichomes with a jeweller's loupe during the last week or two. Harvest when most trichomes have turned milky white with around 10–20% amber — this window typically delivers the best balance of potency and flavour.
6. Dry harvested buds slowly in a dark, well-ventilated space at 18–21°C and 55–60% humidity for 7–14 days. Cure in sealed glass jars, burping daily for the first week, then every few days for at least 2–4 weeks. Proper curing is what brings out the full cherry-citrus-pine complexity of this strain's terpene profile.

Rainbow Sherbet #11 vs Sunset Sherbet Seeds

Since Sunset Sherbet is one of the parent strains, growers sometimes wonder whether to just grow the original instead. Here's the quick breakdown:

Rainbow Sherbet #11 brings noticeably higher THC, better yields, and a more complex terpene profile thanks to the Pink Guava influence. The trade-off is an extra week of flowering and a slightly less sedative effect due to the higher sativa percentage (30% vs 15%). If you want maximum potency and flavour complexity, Rainbow Sherbet #11 is the pick. If you want a heavier body effect and faster turnaround, the original Sunset Sherbet still has its place.