Bubble Kush
Cannabis seeds
by Royal Queen Seeds
Bubble Kush Cannabis Seeds by Royal Queen Seeds
Bubble Kush is a feminised cannabis seed strain from Royal Queen Seeds that crosses OG Kush with Bubble Gum to produce an 80% Indica-dominant plant with serious yielding power. With up to 650 grams per outdoor plant and 19% THC, this is the Kush genetics you grow when quantity and potency both matter. Royal Queen Seeds bred this one to hit hard and harvest heavy — and it delivers on both counts.
How Many Seeds Do You Need?
Bubble Kush feminised seeds come in packs of 1, 3, 5, and 10. If you're running a single tent with a 1m² footprint, 3-5 seeds gives you room for selection and a spare if germination doesn't go your way. Growing outdoors with space to spare? The 10-pack is your best value — these plants get tall and bushy, so give each one at least a square metre.
Bubble Kush Genetics: OG Kush Meets Bubble Gum
Bubble Kush gets its backbone from two heavyweights. OG Kush brings the potency, the structure, and that unmistakable earthy Kush funk. Bubble Gum adds sweetness — literally. The flavour profile leans gum-like and sweet with an earthy base, and you can smell it on the plant well before harvest. The 80/20 Indica-to-Sativa split means the effect is firmly on the relaxing side: a cerebral onset that settles into full-body calm. Smoke a bit too much and you're not going anywhere — the couch has claimed you.
At 19% THC, Bubble Kush sits in a comfortable sweet spot. It's strong enough to satisfy experienced smokers but not so overpowering that it becomes a one-hit-and-done situation. The buds themselves are dense, dark green, and covered in red pistils that make them look almost ornamental before you trim them.
Bubble Kush Yield and Growing Specs
This strain produces some of the highest yields you'll find in the Kush family. Indoors, expect 550-600 grams per square metre under optimised conditions. Outdoors, individual plants can push up to 650 grams — that's a serious return for a single season.
| Specification | Detail |
|---|---|
| Seed Bank | Royal Queen Seeds |
| Genetics | OG Kush x Bubble Gum |
| Type | Feminised (Photoperiod) |
| Indica / Sativa | 80% Indica / 20% Sativa |
| THC Content | 19% |
| Indoor Height | 80-140 cm |
| Outdoor Height | 160-200 cm |
| Indoor Yield | 550-600 g/m² |
| Outdoor Yield | Up to 650 g/plant |
| Available Pack Sizes | 1, 3, 5, 10 seeds |
How Bubble Kush Grows: What to Expect
Here's the thing that catches people off guard: despite being 80% Indica, Bubble Kush doesn't stay short and squat like most Indica-dominant strains. Indoor plants reach 80-140 cm, which is tall enough to bump into a low-hung light if you're not paying attention. Outdoors, you're looking at 160-200 cm — proper bush territory. Plan your vertical space accordingly, especially in a tent.
The upside of that extra height is more node sites, which translates directly into those 550-650 gram yields. The plants develop large, dense buds with a dark-green colouring and distinctive red pistils. They respond well to training techniques like LST or SCROG if you need to manage height in a smaller grow space.
The honest limitation? Tall Indica-dominant plants can develop heavy colas that need support in late flower. If you're growing outdoors, stakes or a trellis net will save you from branches snapping under their own weight in the final weeks. We've seen growers lose top colas to exactly this — a bamboo stake costs nothing and saves everything.
Flavour, Aroma, and the Bubble Kush Smoke
Crack open a cured bud and you get hit with that sweet, gum-like aroma first — that's the Bubble Gum parent doing its work. Underneath sits a layer of earthy Kush that grounds the sweetness and stops it from being one-dimensional. The smoke is smooth, sweet on the inhale, earthy on the exhale, with a lingering sugary note that sticks to the palate.
The effect starts cerebral — a clear-headed, pleasant lift that makes conversation flow and films more interesting. Give it 20 minutes and the Indica genetics take over. Your body relaxes, tension drops, and the couch starts feeling like the only place you want to be. This is the strain for a film night with mates, not for getting things done. If you overdo it, you'll know — movement becomes optional.
Compared to something like Critical Kush from Royal Queen Seeds, Bubble Kush trades a bit of raw sedation for a more flavourful, sweeter smoke. If you want pure knockout power, Critical Kush edges ahead. If you want something you'll actually enjoy tasting while it puts you on the sofa, Bubble Kush is the better pick.
Complete your indoor setup with a grow tent, carbon filter, and LED panel. Growing Bubble Kush outdoors? Grab some plant support stakes or a trellis net — those heavy colas will thank you. If you're after a different Royal Queen Seeds strain for comparison, Critical Kush and Blue Cheese are both worth a look.
Why Bubble Kush Deserves a Spot in Your Grow
The Kush family is massive, and most strains in it force you to choose: do you want flavour, or do you want yield? Bubble Kush sidesteps that compromise. At 550-600 g/m² indoors and up to 650 grams per plant outdoors, it outproduces most Kush varieties by a comfortable margin. The 19% THC keeps the potency where it needs to be — strong enough to be meaningful, not so strong it becomes unpleasant.
We've been selling Royal Queen Seeds since the early days, and Bubble Kush consistently gets reordered. The growers who buy it tend to be people who've already run a Kush strain or two and want more weight at harvest without sacrificing that classic Kush character. The Bubble Gum cross adds a sweetness that makes the end product genuinely enjoyable to smoke, not just effective.
The one thing to plan for: vertical space. If your tent is under 160 cm tall, you'll need to top or train these plants early. In an outdoor garden with room to stretch, they'll reward you with some of the heaviest Kush harvests you've seen.
How to Grow Bubble Kush Seeds
- Germinate your Bubble Kush seeds using the paper towel method or directly in a starter plug. Keep the environment warm (22-25°C) and moist. Taproots typically emerge within 24-72 hours.
- Transplant seedlings into their final containers once the first true leaves appear. For indoor growing, 11-15 litre pots work well. Outdoor growers can go larger — 25 litres or directly into the ground for maximum root development and yield.
- During vegetative growth, keep lights on an 18/6 schedule indoors. These plants grow taller than typical Indicas, so begin low-stress training (LST) or topping early if height is a concern. Aim to flip to 12/12 before plants reach half your available vertical space.
- In flower, support developing colas with stakes or a SCROG net. The dense, heavy buds can snap branches in the final 2-3 weeks. Monitor humidity closely — dense Indica buds are more susceptible to mould if relative humidity exceeds 50% in late flower.
- Harvest when trichomes shift from clear to milky-white with around 10-20% amber. Dry in a dark, ventilated space at 18-22°C for 7-10 days, then cure in glass jars for at least two weeks. Proper curing brings out that sweet, gum-like flavour Bubble Kush is known for.
Frequently Asked Questions
What does Bubble Kush taste and smell like?
Sweet and gum-like upfront, with an earthy Kush base underneath. The Bubble Gum genetics give it a sugary aroma that's immediately noticeable when you open the jar. The smoke is smooth with a lingering sweetness on the exhale.
How tall does Bubble Kush grow indoors?
Between 80 and 140 cm in a grow tent. That's taller than most 80% Indica strains, so plan your vertical space or use training techniques like topping and LST to manage height. Outdoors, expect 160-200 cm.
What yield can I expect from Bubble Kush?
Indoors, 550-600 g/m² under good conditions. Outdoors, a single plant can produce up to 650 grams. These are among the highest yields in the Kush family, which is a big part of why this strain stays popular.
Is Bubble Kush the same as Bubba Kush?
No. They share OG Kush parentage and similar names, but Bubble Kush is specifically an OG Kush x Bubble Gum cross bred by Royal Queen Seeds. Bubba Kush has different secondary genetics and a distinct flavour profile. The sweet, gum-like taste of Bubble Kush sets it apart.
How does Bubble Kush compare to Critical Kush?
Both are Indica-dominant Royal Queen Seeds strains with strong yields. Critical Kush leans heavier on sedation and raw potency. Bubble Kush offers a sweeter flavour profile and a more balanced onset before the body relaxation kicks in. Pick Critical Kush for pure power, Bubble Kush for a tastier smoke.
What pack sizes are available for Bubble Kush seeds?
Packs of 1, 3, 5, and 10 feminised seeds. For a single grow tent, 3-5 seeds is the sweet spot. The 10-pack offers the best per-seed value if you're planning multiple runs or growing outdoors with space.
Does Bubble Kush need support during flowering?
Yes. The dense, heavy colas can snap branches in late flower, especially outdoors. Use bamboo stakes, plant yo-yos, or a SCROG net to support the weight. This is common with high-yielding Indica strains — it's not a flaw, just something to plan for.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.