Auto Blackberry Kush is a Dutch Passion autoflower with a sweet berry-and-kush flavor and a heavy, relaxing effect. From Blueberry x Dark Hash Plant, it is a very compact, indica-dominant plant at 15-20% THC that stays small and discreet while still delivering solid yields and dense, resinous buds. Easy to grow and sedating, it suits growers who want a mellow, flavorful evening strain in a small package.
This is an autoflower, so it flowers on age rather than a change in the light cycle, which keeps the grow simple. It is a different strain from Blackberry Auto and Blackberry Moonrocks Auto. The figures below are Dutch Passion breeder values; check your own pack for the exact numbers.
Recommended Strains
Auto Blackberry Kush
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THC | 15% - 20% (Medium) |
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Lineage | Blueberry X Dark hash plant |
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Type | Autoflowering |
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Height | 2.3 ft | 0.7 m |
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Yield | Medium |
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Yield Indoor | 1.31 - 1.47 oz/ft² | 400 - 450 g/m² |
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Yield Outdoor | 7.05 oz/plant | 200 g/plant |
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Life Cycle | 10 - 11 weeks |
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Phenotype | 70% Indica / 30% Sativa |
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Effects | Sedative, Powerful, Relaxed |
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Flavors | Fruity, Kush, Earthy |
Blackberry Moonrocks Auto
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THC | 26% - 33% (High) |
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Lineage | Blue Moonrock x male Blackberry Kush x Ruderalis |
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Type | Autoflowering |
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Height | 3.94 ft | 1.2 m |
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Yield | High |
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Yield Indoor | 1.8 oz/ft² | 550 g/m² |
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Yield Outdoor | 4.23 - 7.05 oz/plant | 120 - 200 g/plant |
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Life Cycle | 8 - 10 weeks |
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Phenotype | 80% Indica / 20% Sativa |
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Medical | Arthritis, Depression, Fatigue |
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Effects | Focused, Happy, Relaxed |
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Flavors | Berry, Blueberry |
Auto Blackberry Kush Grow Info
| Trait | Auto Blackberry Kush (Dutch Passion) |
| Genetics | Blueberry x Dark Hash Plant |
| Seed type | Autoflowering |
| Genetic profile | 70% indica / 30% sativa |
| THC | 15-20% (medium) |
| Full life cycle | 10-11 weeks from germination |
| Height | Around 0.7 m, very compact |
| Indoor yield | 400-450 g/m² |
| Outdoor yield | Around 200 g per plant |
| Effects | Sedative, relaxed, powerful |
| Flavor | Fruity berry, kush, earthy |
These are Dutch Passion’s published figures for the Auto Blackberry Kush line at Growlantis. When you need an exact THC percentage, height, or yield, check the specification on your own Auto Blackberry Kush seed pack.
What Makes Auto Blackberry Kush Worth Growing
The standout is a lot of flavor and a heavy effect in a tiny plant. At around 0.7 m, Auto Blackberry Kush is one of the more compact strains you can grow, yet it still returns a solid 400-450 g/m² indoors with dense, resinous buds. For discreet, small-space growing without giving up much, it is a smart choice.
The flavor comes from its Blueberry and Dark Hash Plant parents, a sweet berry fruitiness over an earthy, hashy kush base. The effect is sedative and relaxing, a heavy body feel best suited to the evening and for unwinding, at a comfortable 15-20% THC. It is easy, forgiving, and well-suited to beginners.
Is Auto Blackberry Kush Indica or Sativa?
Auto Blackberry Kush is indica dominant, listed at 70% indica and 30% sativa, with ruderalis in the mix for its autoflower timing.
That shows in both the plant and the high. The plant is short, compact, and resinous, easy to manage and hide. The effect is a heavy, sedative body stone that relaxes muscles and calms the mind, firmly an evening and nighttime strain rather than a daytime one.
Flowering Time vs Full Grow Time
Autoflowers confuse a lot of growers on timing, so it is worth being precise.
- Full grow time (seed to harvest): about 10-11 weeks. This is the figure Dutch Passion publishes, and it covers the whole cycle from germination to a ready plant.
- Flowering stage: this happens inside that 10-11 week window, not after a separate long veg period, with the plant moving into bloom on its own partway through.
The takeaway: do not treat 10-11 weeks as flowering and then add veg on top. Plan around the full seed-to-harvest cycle, which runs a little longer than the fastest autos despite the plant’s small size.
Does Auto Blackberry Kush Need a 12/12 Light Cycle?
No. Auto Blackberry Kush 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. Keep the longer schedule and strong light instead.
Auto Blackberry Kush 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.
- Weeks 3-4: vegetative growth. The small plant builds its compact frame quickly and may show preflowers. Start gentle low stress training.
- Weeks 5-6: stretch and bud set. The limited stretch finishes and flower sites fill in.
- Weeks 7-10: main flower development. Dense, resinous buds build and the sweet berry and kush aroma develops.
- Weeks 10-11: maturation and harvest. Most plants finish here. Judge ripeness by the trichomes, not the day count.
Choosing Your Setup: Space, Light and Pots
Auto Blackberry Kush is made for small spaces. At around 0.7 m it fits a compact tent, a cupboard, or a discreet corner, needing very little vertical room.
Light still drives the yield, so give it a good source. A full-spectrum LED at 25-35 watts per square foot on an 18-20 hour schedule keeps the dense buds packed. Add an inline exhaust fan and a carbon filter for the berry-kush aroma.
Plant straight into the final 3-5 gallon fabric pot and skip transplanting, which autos dislike. Fabric pots air-prune the roots and keep the root zone healthy across the 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 on an auto, so use these weeks to build a wide, even frame. Keep nitrogen available, hold temperatures in the low to mid 70s°F, and a gentle low stress tie or two helps open the small canopy for a little more yield.
Avoid topping and other high-stress cuts. On a plant this small and quick, there is little recovery time, and the gain is not worth the risk. Mostly, Auto Blackberry Kush grows itself with minimal input, which suits its easy, compact character.
Feeding and Watering Auto Blackberry Kush
Keep feeding light. Autos run smaller root systems, so start nutrients at about half the label strength and build up only if the plant asks. Use a nitrogen-forward base through veg, then move to a bloom formula higher in phosphorus and potassium as flowering sets in, watching the leaves for burn.
Water by root-zone moisture, not a timetable, and in modest amounts given the small plant. A young plant needs very little, and soaking the medium starves the roots of oxygen. Increase water 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 dense, resinous buds build over the back half of the cycle. The sweet berry and kush aroma develops, so keep air moving and run a carbon filter indoors.
As the 10-11 week finish approaches, let the plant decide. Check trichomes under a loupe and harvest when most are cloudy with a few amber for the fullest sedative effect. After the cut, hang the 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 to protect the berry flavor.
Growing Indoors vs Outdoors
Indoors is where Auto Blackberry Kush is easiest to control. Hold 18/6, give it a small, well-lit space, and the 400-450 g/m² indoor yield is reachable while the plant stays compact and discreet.
Outdoors, the autoflower trait lets you plant after the last frost and harvest in about two and a half months, and the small size keeps it easy to tuck away on a balcony or among other plants. Outdoor yields are modest at around 200 g per plant. Give it full sun and well-draining soil.
How Tall and How Much? Height and Yield
Height is the easy part. Auto Blackberry Kush stays around 0.7 m, one of the more compact strains around, which makes it ideal for small tents and discreet grows with little training.
On yield, it is a medium producer that is strong for its size: 400-450 g/m² indoors and around 200 g per plant outdoors. Strong light and an open, lightly trained canopy are the main ways to get the most from its compact frame.
Best US Climates for Auto Blackberry Kush
As a tiny, hardy autoflower, Auto Blackberry Kush is flexible. Its 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 dense buds. Its small, discreet size makes it a strong indoor and balcony choice anywhere. For a related berry-flavored autoflower, see our Blackberry Auto grow guide.
Common Problems When Growing Auto Blackberry Kush
A few predictable issues are easy to avoid.
Overwatering a small plant
A compact plant in a big pot needs little water. Overwatering is an easy way to stall it, so water small amounts to root-zone moisture, not on a schedule.
Confusing it with other blackberry strains
Auto Blackberry Kush, Blackberry Auto, and Blackberry Moonrocks Auto are different strains. Make sure you follow the right guide for the seeds you actually bought.
Overfeeding
The small auto root system burns easily. Start nutrients at half strength and increase only on demand, reading the leaves rather than following the bottle.
Humidity in dense buds
The compact, resinous buds trap moisture. Keep late-flower humidity down and air moving around the small canopy to protect the harvest.
Making the Most of Your Harvest
Do not waste the trim. The Dark Hash Plant heritage makes it a good hash plant, so the resinous sugar leaves go well into bubble hash, dry sift, or infused oil. The stems, roots, and fan leaves compost well and feed your next grow.
Is Auto Blackberry Kush Right for You?
If you want a compact, discreet autoflower with a sweet berry-kush flavor and a heavy, relaxing evening effect, yes. It is easy, forgiving, and strong on yield for its size, which makes it a great small-space or beginner grow. If you want a big plant or a daytime high, look elsewhere. For a related berry autoflower, see our Blackberry Auto grow guide.
Frequently Asked Questions
Is Auto Blackberry Kush indica or sativa?
Auto Blackberry Kush is indica dominant, listed at 70% indica and 30% sativa, with ruderalis for its autoflower timing, from Blueberry and Dark Hash Plant. It grows short and compact, and the effect is a heavy, sedative body stone that relaxes and calms. It is firmly an evening and nighttime strain.
Does Auto Blackberry Kush need a 12/12 light cycle?
No. Auto Blackberry Kush 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 Auto Blackberry Kush take to grow?
Auto Blackberry Kush finishes its full seed-to-harvest cycle in about 10 to 11 weeks from germination, a little longer than the fastest autos despite its small size. That figure covers the whole cycle, not just flowering. Judge the finish by trichome maturity rather than the day count.
How much does Auto Blackberry Kush yield?
Auto Blackberry Kush is a medium yielder that is strong for its size, at 400 to 450 g/m2 indoors and around 200 g per plant outdoors. Strong light and an open, lightly trained canopy are the main ways to get the most from its compact frame, which punches above its height on yield.
How tall does Auto Blackberry Kush grow?
Auto Blackberry Kush is very compact at around 0.7 m, one of the smaller strains you can grow. That makes it ideal for small tents, cupboards, and discreet grows with little training. Most of its limited height comes during the early flowering stretch, so it is simple to keep in bounds.
What does Auto Blackberry Kush taste like?
Auto Blackberry Kush has a sweet, fruity berry flavor from its Blueberry parent over an earthy, hashy kush base from Dark Hash Plant. The taste comes through strongest after a careful dry and cure, so take your time at harvest to protect those sweet berry and kush notes in the finished flower.
Can you clone Auto Blackberry Kush?
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 small strain. If you want more plants, germinate more seeds. Cloning only makes sense with photoperiod strains.
