Royal Kush Autoflower
Cannabis seeds
by Royal Queen Seeds
Royal Kush Autoflower Cannabis Seeds
Royal Kush Autoflower is an autoflowering feminised cannabis seed from Royal Queen Seeds that delivers a spicy, almost fruity aroma and a compact, fast-finishing plant suited to growers who want results without the wait. Bred from Sweet Special Auto (a cross of Grapefruit, Hog, and Cream Caramel Auto) and a Kush parent, she packs flavour genetics into a frame that stays manageable indoors and stretches nicely outdoors. With 13% THC, she's the kind of strain you reach for during the day — uplifting, clear-headed, and functional.
How Many Seeds Do You Need?
Royal Kush Autoflower comes in packs of 1, 3, 5, or 10 seeds. Running a single plant on your balcony or windowsill? One seed does the job. Planning a proper indoor run under a 600W lamp? Grab 5 or 10 — you'll want enough plants per square metre to hit that 300-350g/m² yield potential. We'd go with 5 for a first run so you've got a spare if germination doesn't go your way on one or two.
Aroma and Flavour Profile of Royal Kush Autoflower
The scent is the first thing you'll notice once she starts flowering. A ripe Royal Kush Autoflower pushes out a rich, spicy aroma with an almost fruity sweetness underneath — think warm spice rack with a bowl of grapefruit sitting next to it. That fruit-forward character comes directly from the Sweet Special Auto parent, which blends Grapefruit, Hog, and Cream Caramel Auto genetics. The Kush side keeps things grounded with a deeper, earthier undertone. It's not overpowering in the way some strains hit you across the room, but in an enclosed grow space you'll definitely want carbon filtration running.
Growing Royal Kush Autoflower Seeds
She's a quick one. From germination to harvest, you're looking at 8-9 weeks total — that's seed to chop, not just flowering time. Indoors under a 600W lamp, expect yields around 300-350g/m². Outdoors, each plant produces between 120-170 grams, which is respectable for an autoflower of this size.
Height-wise, the Kush genetics push her a bit taller than the average autoflower. Indoors she'll reach 60-90cm, while outdoor plants can stretch to 120-150cm. That's still compact enough for a tent or balcony grow, but she's not the tiny plant some autoflower growers expect. If you're working with limited vertical space, keep that 90cm ceiling in mind and consider some light stress training early on.
One honest note: the leaf-to-calyx ratio is slightly higher than average. That means a bit more trimming at harvest. It's not a dealbreaker by any stretch — just budget an extra 20 minutes with the scissors. The bud quality underneath is solid, and the uplifting, happy effect makes the trim work feel worth it.
| Specification | Detail |
|---|---|
| Seed Bank | Royal Queen Seeds |
| Seed Type | Autoflowering, Feminised |
| Genetics | Sweet Special Auto x Kush |
| THC Content | 13% |
| Seed to Harvest | 8-9 weeks |
| Indoor Height | 60-90 cm |
| Outdoor Height | 120-150 cm |
| Indoor Yield | 300-350 g/m² (600W) |
| Outdoor Yield | 120-170 g per plant |
| Effect | Uplifting, happy |
| Aroma | Spicy, almost fruity |
| Pack Sizes | 1, 3, 5, or 10 seeds |
Complete your grow setup with a propagation kit for reliable germination, and a carbon filter to keep that spicy-fruity aroma contained. If you're running Royal Kush Autoflower indoors, a compact grow tent in the 60x60 or 80x80 range pairs well with her manageable height.
Why Grow Royal Kush Autoflower Seeds
Speed is the main draw here. An 8-9 week total cycle from seed to harvest means you can squeeze in multiple runs per season outdoors, or keep a perpetual rotation going indoors without tying up your grow space for months. For growers who want a quick turnaround without sacrificing flavour, this strain delivers.
The 13% THC might look modest on paper compared to strains pushing 20%+, but that's actually the point. This is a daytime smoke — the kind of weed you roll up on a Saturday afternoon when you still want to function. The effect is described as uplifting and happy, not couch-lock heavy. If you've ever over-indulged on a high-THC strain at 2pm and written off the rest of your day, you'll appreciate what a moderate-THC cultivar brings to the table.
Compared to something like Royal Critical Auto from the same seed bank, Royal Kush Autoflower trades raw yield for a more interesting terpene profile and a gentler high. If you're chasing maximum grams per watt, Critical Auto is the workhorse. If you're chasing flavour and a functional daytime effect, Royal Kush Auto is the better pick. We've been carrying Royal Queen Seeds since the early days and their autoflower genetics are consistently stable — germination rates are reliable and the plants do what the specs say they'll do.
How to Grow Royal Kush Autoflower
- Germinate your seeds using the paper towel method or directly in a small pot of moist, light soil. Autoflowers don't love being transplanted, so starting in the final container (7-11 litres) saves stress.
- Provide 18-20 hours of light per day from germination through harvest. Autoflowers don't need a light cycle change to trigger flowering — they'll do it on their own around week 3-4.
- Keep feeding light during the first few weeks. Autoflowers are smaller plants with shorter life cycles, so they need less nutrients than photoperiod strains. Start at half the manufacturer's recommended dose and increase only if the plant looks hungry.
- Watch for the stretch. Once flowering kicks in, Royal Kush Autoflower will gain height quickly thanks to her Kush genetics. If vertical space is tight, bend the main stem gently with low-stress training during early flower.
- Harvest at 8-9 weeks from germination when trichomes are mostly milky with a few turning amber. The slightly higher leaf-to-calyx ratio means you'll spend a bit more time trimming, but a sharp pair of curved scissors makes quick work of it.
- Dry your buds slowly in a dark room at around 18-21°C with 55-60% humidity for 7-10 days, then cure in glass jars for at least two weeks. The spicy, fruity aroma develops further during curing.
Royal Kush Autoflower vs Other Autoflowers
| Strain | THC | Seed to Harvest | Indoor Yield | Height (Indoor) | Best For |
|---|---|---|---|---|---|
| Royal Kush Autoflower | 13% | 8-9 weeks | 300-350 g/m² | 60-90 cm | Daytime smoke, flavour |
| Royal Critical Auto | 14% | 8-9 weeks | 375-425 g/m² | 60-100 cm | Maximum yield |
| Royal Cookies Auto | 18% | 8-10 weeks | 325-375 g/m² | 70-100 cm | Higher potency |
Frequently Asked Questions
What does Royal Kush Autoflower smell like?
Rich, spicy, and almost fruity. The Sweet Special Auto parent (Grapefruit x Hog x Cream Caramel Auto) drives the fruit-forward spice, while the Kush side adds earthy depth. The aroma intensifies during the final two weeks of flowering and develops further during curing.
Is 13% THC too low?
Not if you want a functional daytime smoke. 13% THC gives you an uplifting, happy effect without the heavy sedation or brain fog of higher-THC strains. It's a different tool for a different job — and for many growers, it's exactly what they want in their rotation.
How tall does Royal Kush Autoflower grow indoors?
Between 60-90cm indoors. That's slightly taller than many autoflowers due to her Kush genetics, but still compact enough for a standard grow tent. Outdoors she can reach 120-150cm.
Why grow autoflowering cannabis seeds?
Autoflowers flower based on age, not light cycle. That means no switching to 12/12, faster harvests (8-9 weeks for Royal Kush Auto), and the ability to run multiple cycles per year. They're also generally smaller and more discreet than photoperiod plants.
Can I grow Royal Kush Autoflower outdoors?
Yes. Outdoors she reaches 120-150cm and yields 120-170 grams per plant. She doesn't need a specific light schedule, so she'll flower regardless of season — though warmer months with longer daylight hours will give the best results.
How much does Royal Kush Autoflower yield?
Under a 600W lamp indoors, expect 300-350g/m². Outdoors, each plant produces 120-170 grams. These numbers assume decent growing conditions — good light, proper feeding, and no major stress events during the cycle.
Is the higher leaf-to-calyx ratio a problem?
It means a bit more trimming at harvest — maybe an extra 15-20 minutes per plant compared to a strain with tighter calyxes. It doesn't affect bud quality or potency. A decent pair of trimming scissors and some patience is all you need.
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.