Royal Dwarf Auto is a Royal Queen Seeds micro strain built for small, discreet grows. From Skunk x Ruderalis, it is one of the smallest cannabis plants you can grow, staying well under a meter and finishing fast. Potency and yield are modest, but that is the point: it is a tiny, resilient, stealthy autoflower that fits where other strains cannot, which makes it ideal for beginners, balconies, and cupboard-sized setups.
This is an autoflower, so it flowers on age rather than a change in the light cycle, which keeps the grow simple. The figures below are Royal Queen Seeds breeder values; check your own pack for the exact numbers.
Recommended Strains
Royal Dwarf Auto
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THC | 12% - 13% (Low) |
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Lineage | Skunk x Ruderalis |
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Type | Autoflowering |
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Height | 2.3 ft | 0.7 m |
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Yield | Low |
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Yield Indoor | 0.49 - 0.66 oz/ft² | 150 - 200 g/m² |
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Yield Outdoor | 1.06 - 2.82 oz/plant | 30 - 80 g/plant |
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Life Cycle | 6 - 7 weeks |
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Phenotype | 60% Indica / 10% Sativa / 30% Ruderalis |
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Effects | Creative, Uplifted |
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Flavors | Earthy, Skunk |
Auto Cinderella Jack
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THC | 20% - 25% (High) |
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Lineage | (Cinderella 99 X Jack Herrer) X Magnum |
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Type | Autoflowering |
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Height | 3.28 ft | 1 m |
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Yield | High |
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Yield Indoor | 1.64 oz/ft² | 500 g/m² |
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Yield Outdoor | 5.29 oz/plant | 150 g/plant |
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Life Cycle | 10 - 11 weeks |
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Phenotype | 50% Indica / 50% Sativa |
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Effects | Powerful, Relaxed |
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Flavors | Incense, Earthy |
Royal Dwarf Auto Grow Info
| Trait | Royal Dwarf Auto (Royal Queen Seeds) |
| Genetics | Skunk x Ruderalis |
| Seed type | Autoflowering |
| Genetic profile | 60% indica / 10% sativa / 30% ruderalis |
| THC | 12-13% (low) |
| Flowering time | 6-7 weeks (full cycle 9-10 weeks) |
| Height | Around 0.7 m (30-60 cm indoors, up to 90 cm outdoors) |
| Indoor yield | Low, 150-200 g/m² |
| Outdoor yield | 30-80 g per plant |
| Effects | Creative, uplifted, lightly relaxing |
| Flavor | Earthy, skunk |
These are Royal Queen Seeds’ published figures for the Royal Dwarf Auto line at Growlantis. When you need an exact THC percentage, height, or yield, check the specification on your own Royal Dwarf Auto seed pack.
What Makes Royal Dwarf Auto Worth Growing
Royal Dwarf Auto is about size and stealth, not power. At around 0.7 m, often just 1-2 feet indoors, it is one of the smallest strains available, easy to hide in a cupboard, on a balcony, or in a tiny tent. It is resilient, beginner-friendly, and finishes its whole cycle in 9-10 weeks.
Potency is low at 12-13% THC, and yields are modest, so this is a convenience strain rather than a heavy hitter. The effect is light and pleasant: a balanced, cerebral, uplifting lift with a mild body relaxation, good for a gentle, functional smoke. The flavor is classic Skunk, earthy and pungent. If discretion and simplicity matter more than yield or strength, it is a smart choice.
Is Royal Dwarf Auto Indica or Sativa?
Royal Dwarf Auto is indica leaning with a high ruderalis share, listed at 60% indica, 10% sativa, and 30% ruderalis. The large ruderalis portion is what keeps it so small and quick.
In the plant, that means a tiny, compact, resilient structure that is easy to manage and hide. In the high, the effect is balanced and light: an uplifting, creative, cerebral lift with a gentle body relaxation, rather than a heavy stone. It is an easygoing, functional strain.
Flowering Time vs Full Grow Time
Autoflowers confuse a lot of growers on timing, and this strain publishes both numbers, so the distinction is clear.
- Flowering time: 6-7 weeks. This is the bloom stage, where the buds form and ripen, and it is short.
- Full grow time (seed to harvest): about 9-10 weeks. This covers the whole cycle, with flowering happening inside it rather than after a separate long veg period.
The takeaway: the 6-7 week figure is flowering only, while 9-10 weeks is the complete cycle. Plan around the full cycle, and enjoy a quick, low-fuss grow.
Does Royal Dwarf Auto Need a 12/12 Light Cycle?
No. Royal Dwarf Auto flowers on age, not day length, so it never needs a 12/12 photoperiod to bloom.
Indoors you can hold a longer schedule like 18/6 or 20/4 from seedling to harvest. Dropping to 12/12 once flowering starts only cuts daily light and costs you yield, which matters on an already modest producer. Keep the longer schedule and good light instead.
Royal Dwarf Auto Grow Timeline, Week by Week
Treat this as a development pattern, not a fixed schedule, since phenotype and environment shift the dates.
- Weeks 1-2: germination and seedling. The taproot and first leaves establish. Keep water light and conditions stable.
- Week 3: vegetative growth. The tiny plant builds its compact frame quickly and may start to preflower.
- Weeks 4-5: stretch and bud set. The limited stretch finishes and flower sites fill in.
- Weeks 6-7: main flower development. Buds build and the earthy, skunky aroma develops.
- Weeks 8-10: maturation and harvest. Most plants finish here. Judge ripeness by the trichomes, not the day count.
Choosing Your Setup: Space, Light and Pots
Royal Dwarf Auto is made for the smallest spaces. At 30-60 cm indoors, it fits a cupboard, a micro tent, or a discreet corner, which is its main appeal. Little vertical room is needed.
Light still drives what yield there is, so give it a decent source. A full-spectrum LED scaled to the small footprint, on an 18-20 hour schedule, keeps the buds dense. A small inline fan and a carbon filter handle the skunky aroma, which matters in a stealth grow.
Plant straight into the final pot and skip transplanting, which autos dislike. A 2-3 gallon fabric pot suits its small root system and keeps the root zone healthy across the short cycle.
Germinating and Raising Seedlings
The paper towel method is the easy, reliable start. Soak the seeds for 12-24 hours, then set them between damp paper towels on a covered plate, kept dark and warm at 70-85°F (21-29°C). A taproot usually shows in two to three days.
When the taproot reaches about 1-2 cm, plant it root-down a knuckle deep in a light mix and keep the surface moist until the seedling breaks ground. Hold off on nutrients at this stage. New to germination? Our beginner growing guides walk through it step by step.
The Vegetative Stage and Low Stress Training
Veg is short and the plant is tiny, so training is optional here. Keep nitrogen available, hold temperatures in the low to mid 70s°F, and if you want to squeeze out a little more yield, a gentle low stress tie or two opens the small canopy.
Avoid topping and other high-stress cuts entirely. On a plant this small and quick, there is no recovery time, and the gain is not worth the risk. Mostly, Royal Dwarf Auto just grows itself with minimal input, which is a big part of its appeal.
Feeding and Watering Royal Dwarf Auto
Keep feeding very light. This small plant with a small root system needs little, so start nutrients at about a quarter to half the label strength and build up only if it clearly asks. Use a gentle base through veg, then a light bloom feed as flowering sets in, watching the leaves for burn.
Water by root-zone moisture, not a timetable, and in small amounts. A tiny plant in a small pot drinks very little early on, and overwatering is an easy mistake. Increase gradually as the plant grows, judging by pot weight.
Flowering and Knowing When to Harvest
Flowering begins on its own around week three or four, with a short stretch and the first pistils, then the small buds build over the 6-7 week bloom. The earthy, skunky aroma develops, so a carbon filter helps keep the grow discreet.
As the 9-10 week finish approaches, let the plant decide. Check trichomes under a loupe and harvest when most are cloudy. After the cut, hang the small branches in the dark at about 60°F (15-16°C) and 55-60% humidity for 7-14 days, then cure in jars, burping daily for the first weeks.
Growing Indoors vs Outdoors
Indoors is where Royal Dwarf Auto shines for stealth. Hold 18/6, give it a small, well-lit space, and it yields around 150-200 g/m² while staying hidden in a cupboard or micro tent.
Outdoors, it grows a little taller, up to about 90 cm, and stays discreet on a balcony or among other plants, returning around 30-80 g per plant. Its small size makes it easy to tuck away. Give it full sun and well-draining soil.
How Tall and How Much? Height and Yield
Height is the whole point. Royal Dwarf Auto stays around 0.7 m, often just 30-60 cm indoors, which makes it one of the easiest strains to grow discreetly in a tight space.
On yield, it is a low producer: around 150-200 g/m² indoors and 30-80 g per plant outdoors. You grow this one for its tiny size, speed, and stealth rather than for weight or potency, and good light is the main way to get the most from it.
Best US Climates for Royal Dwarf Auto
As a tiny, fast, hardy autoflower, Royal Dwarf Auto is flexible. Its short cycle suits the Pacific Northwest and northern states, finishing before the fall weather, and it grows easily in California and the warm West too.
In the humid Southeast, keep airflow up around the buds. Its real strength is indoor and balcony stealth growing anywhere, where its tiny size lets it hide in plain sight. For another compact, discreet strain, see our Purple Dream Auto grow guide.
Common Problems When Growing Royal Dwarf Auto
A few predictable issues are easy to avoid.
Expecting high yield or potency
At 12-13% THC and 150-200 g/m2, Royal Dwarf Auto is modest on both. Grow it for its tiny size and stealth, not for weight or strength, and set expectations accordingly.
Overwatering a tiny plant
A small plant in a small pot needs very little water. Overwatering is one of the easiest ways to stall it. Water small amounts to root-zone moisture, not on a schedule.
Overfeeding
The small root system burns easily. Feed very light, starting at a quarter to half strength, and increase only if the plant clearly asks.
Trying to train it hard
The plant is tiny and fast, with no recovery time. Skip topping and heavy training, and let it grow with minimal input.
Making the Most of Your Harvest
Do not waste the trim. Even a small plant’s sugar leaves can go into bubble hash, dry sift, or a small batch of infused oil. The stems, roots, and fan leaves compost well and feed your next grow.
Is Royal Dwarf Auto Right for You?
If you need a tiny, discreet, easy strain for a cupboard, balcony, or stealth grow, yes, it is one of the best options there is. It is beginner-friendly, quick, and nearly self-sufficient. If you want high potency or a big yield, choose a different strain. For another compact, good-looking autoflower, see our Purple Dream Auto grow guide.
Frequently Asked Questions
Is Royal Dwarf Auto indica or sativa?
Royal Dwarf Auto is indica leaning with a high ruderalis share, listed at 60% indica, 10% sativa, and 30% ruderalis. That large ruderalis portion keeps it tiny and quick. The effect is light and balanced: an uplifting, creative, cerebral lift with gentle body relaxation rather than a heavy stone.
Does Royal Dwarf Auto need a 12/12 light cycle?
No. Royal Dwarf Auto flowers automatically with age, not day length, so it never needs a 12/12 schedule. Indoors you can hold a longer photoperiod like 18/6 or 20/4 from seedling to harvest. Reducing the light once flowering starts only lowers your daily light and costs yield.
How long does Royal Dwarf Auto take to grow?
Royal Dwarf Auto is fast, with a flowering stage of 6 to 7 weeks and a full seed-to-harvest cycle of about 9 to 10 weeks. The flowering figure is the bloom stage only, which sits inside the full cycle. Judge the finish by trichome maturity rather than the day count.
How tall does Royal Dwarf Auto grow?
Royal Dwarf Auto is tiny, staying around 0.7 m, often just 30 to 60 cm indoors and up to about 90 cm outdoors. That makes it one of the smallest, most discreet strains you can grow, ideal for a cupboard, a micro tent, or a balcony where space and stealth matter most.
How much does Royal Dwarf Auto yield?
Royal Dwarf Auto is a low yielder, at around 150 to 200 g/m2 indoors and 30 to 80 g per plant outdoors. You grow it for its tiny size, speed, and stealth rather than its weight. Good light is the main way to get the most from its modest potential in a small space.
How strong is Royal Dwarf Auto?
Royal Dwarf Auto is low in potency at 12 to 13% THC, milder than most modern strains. The effect is light, balanced, and functional, an uplifting cerebral lift with gentle relaxation, which suits a mellow, everyday smoke and makes it approachable for less experienced users.
Can you clone Royal Dwarf Auto?
Not usefully. As an autoflower, a cutting keeps the mother’s age, so it tries to flower straight away as a tiny plant and yields almost nothing, which is even more extreme on a strain this small. If you want more plants, germinate more seeds. Cloning only makes sense with photoperiod strains.
