How to Grow Blackberry Moonstones Autoflower
Blackberry Moonstones Autoflower is an exceptionally potent, indica-dominant autoflower with a sweet berry and blueberry flavor and a very high 26-33% THC, among the strongest you will find in an auto. It is an 80/20 indica-leaning plant with a focused, happy and relaxed effect, a compact frame of around 1.2 m, and a strong indoor yield. Resinous, flavorful and easy to grow, it packs serious potency into a fast, beginner-friendly plant.
This is an autoflowering strain, so it flowers on its own with age rather than on a change in the light cycle, running from seed to harvest in about 8 to 10 weeks. The seeds are feminized, so every plant grows into a flowering female and you never have to identify the sex or remove males. It brings together Blue Moonrocks and Blackberry Kush, crossed with ruderalis for automatic flowering, for a berry-rich, extremely resinous plant.
Recommended Strains
Blackberry Moonstones Auto
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THC | 26% - 33% (High) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 80% Indica / 20% Sativa |
Blackberry Moonstones Auto HMC Edition
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THC | 26% - 33% (High) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 80% Indica / 20% Sativa |
Sweet, berry-forward and remarkably potent, Blackberry Moonstones Autoflower is a rewarding way to grow an ultra-high-THC auto. You can see the full genetics and buy Blackberry Moonstones Auto seeds on the strain page, and browse the rest of our autoflowering seeds alongside it.
Strain Profile at a Glance
| THC | High (26-33%) |
|---|---|
| Lineage | Blue Moonrocks x Blackberry Kush x Ruderalis |
| Type | Autoflowering (feminized) |
| Genetics | 80% Indica / 20% Sativa |
| Climate | Temperate |
| Life cycle | 8-10 weeks seed to harvest |
| Harvest | All season |
| Height | 3.94 ft / 1.2 m |
| Yield indoor | 1.8 oz/ft² (550 g/m²) |
| Yield outdoor | 4.23-7.05 oz/plant (120-200 g/plant) |
| Grow difficulty | Easy, beginner-friendly |
| Flavors | Berry, Blueberry |
| Effects | Focused, Happy, Relaxed |
Promos & Deals
Growing an Autoflowering Strain
Blackberry Moonstones Autoflower flowers automatically with age rather than in response to the light cycle, so it does not need a switch to 12/12 to start flowering. It begins on its own after a few weeks and runs from seed to harvest in about 8 to 10 weeks, under long days of 18 to 20 hours of light the whole way through. Because the seeds are feminized, every plant grows into a flowering female, so there is no sexing and no need to remove males.
Because the life cycle is fixed, the plan matters more than with a photoperiod plant: you cannot veg it longer to make it bigger, so start it in its final pot, keep any training light, and avoid stress so it uses its short life to build buds. In return you get a compact plant of around 1.2 m that still yields strongly indoors, which makes it one of the easiest ways to grow an ultra-high-THC indica in a small tent or tight space.
Climate and Where to Grow It
Blackberry Moonstones Autoflower suits a temperate or Mediterranean-style climate with plenty of sun, steady warmth and good airflow. Because it is an autoflower, it is not tied to the seasons: it finishes on its own short timer, so you can run it all season and even fit more than one cycle into a warm year. Cooler nights late in flower can help bring out color in its berry-rich buds.
It really shines indoors. In a well-managed tent it returns a strong 550 g/m², which is excellent for such a compact plant, while outdoors it gives a more modest 120-200 g per plant, so it is best thought of as an indoor performer. As a compact, indica-dominant auto of only around 1.2 m it stays small and discreet, so the main job is keeping the canopy open so light and air reach the lower buds.
Keep humidity under control through flowering to protect the dense, resinous buds: around 55-60% early on, nearer 40-45% as the flowers fill out, and lower toward harvest. A very high-THC, resin-heavy indica can trap moisture inside its sticky, chunky buds, so steady airflow and sensible humidity keep the finish clean. Aim for daytime temperatures around 72-82°F (22-28°C), which this temperate-climate plant enjoys.
Feeding Schedule (EC Guide)
Blackberry Moonstones Autoflower is a light-to-moderate feeder, and as a compact autoflower it pays to go gently: build nutrients up slowly and let the plant set the pace, since there is no long veg to recover from mistakes. Feed it through its cycle, then taper off for the final flush so the sweet berry flavor comes through clean and the smoke finishes smooth. The ranges below are a starting guide; adjust to your water and medium.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4-0.6 | Very light feed while roots establish |
| Early growth | 0.8-1.2 | Raise nitrogen as the plant builds size |
| Early flower | 1.2-1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4-1.6 | Peak bloom feed while the buds swell |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Because it is an autoflower, Blackberry Moonstones Autoflower starts flowering on its own after a few weeks of growth and runs from seed to harvest in about 8 to 10 weeks, with no light-cycle change needed. It fills out with dense, resinous, extremely sticky buds on a short, compact frame, often with berry-toned color from its Blackberry Kush and Blue Moonrocks side. Thanks to that quick, self-timed cycle you can harvest it all season.
Yields are excellent indoors: around 550 g/m² in a well-run tent, with a more modest 120-200 g per plant outdoors, so it earns its place as an indoor grower. Give it a little gentle training so the lower buds get light, feed it lightly through its cycle, and harvest when most of the trichomes have turned cloudy for the fullest sweet berry flavor and the best of its very high THC.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15-18°C) and 55-60% humidity for 7-14 days, until the thin stems snap rather than bend. A slow, even dry is important with such a resinous, ultra-high-THC auto, because its sticky buds can stay damp in the middle while the outside dries, and a gentle dry protects both the aroma and the trichomes.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure is what brings out the sweet berry and blueberry notes and smooths the smoke, which matters on a berry-rich cross like this where that fruity, resinous character is the main attraction.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Blackberry Moonstones Autoflower is an extremely resinous, trichome-heavy plant, so its trim works especially well for dry sift, bubble hash or rosin. Given its very high THC and heavy resin, that trim makes for a strong, sweet-berry concentrate run from material most growers would otherwise throw away.
Flavor and Terpenes
Blackberry Moonstones Autoflower has a rich, sweet flavor led by ripe berry and blueberry notes, carrying the fruity character of its Blackberry Kush and Blue Moonrocks heritage. It is a smooth, berry-forward profile, and a good cure really brings that fruity sweetness forward in the jar and on the inhale.
Its terpene profile shapes that character. Linalool is the standout note, bringing a soft, sweet and floral quality that underpins the ripe berry flavor and ties into the strain’s relaxed character. Alongside it, nerolidol adds a delicate, floral and lightly woody depth that rounds out the profile. Together these terpenes frame the sweet berry and blueberry character Blackberry Moonstones Autoflower is known for.
Effects and Best Use
With its very high 26-33% THC and indica-dominant 80/20 make-up, Blackberry Moonstones Autoflower delivers a powerful, full-bodied experience, so potency is the headline here. It is reported as focused, happy and relaxed, pairing a clear, cheerful head with a deep, settled body. Because the THC is so high, it is worth starting with a small amount, especially if you have a lower tolerance, as this is one of the strongest autos around.
That focused, happy and relaxed profile makes it surprisingly versatile for such a strong indica: clear enough to stay engaged, yet relaxed enough to wind down. The combination of ultra-high potency, a sweet berry flavor and a fast, compact, high-yielding indoor grow is exactly what makes it stand out.
Common Problems and Pro Tips
The biggest thing to get right with Blackberry Moonstones Autoflower, as with any autoflower, is the planning: because its life cycle is fixed and fairly short, you cannot veg it longer to fix a slow start. Start it in its final pot to avoid transplant stress, keep any training light, and do not let early problems linger, since the plant has little spare time to recover before it flowers.
Its small size makes it easy to manage, but its dense, sticky, resin-heavy buds mean humidity is the main risk late in flower, so keep the air moving, hold humidity down as the flowers fill out, and defoliate a few of the largest fan leaves in mid-flower so light reaches the lower buds. A multi-plant run is simple here, since the compact plants grow at a similar pace.
As a pro tip, go gentle on the nutrients: autos are smaller, lighter feeders, so it is easy to overdo it with a compact plant like this, and a lighter touch keeps the sweet berry flavor clean. Finish with a plain-water flush and a full three to four week cure, and start with a small amount given its exceptionally high THC.
FAQ
Is Blackberry Moonstones Autoflower an autoflowering strain?
Yes. Blackberry Moonstones Autoflower is an autoflowering, feminized strain, so it flowers on its own with age rather than needing a switch to a 12/12 light cycle, and every seed grows into a flowering female. You run it under long 18 to 20 hour days from seed to harvest, with no sexing and no males to remove, which is a big part of why it is so beginner-friendly.
How much THC does Blackberry Moonstones Autoflower have?
Blackberry Moonstones Autoflower is an exceptionally high-THC strain, testing at around 26-33%, which is among the strongest you will find in an autoflower. Combined with its indica-dominant 80/20 genetics, the result is a focused, happy and relaxed effect. Because the THC is so high, it is well worth starting with a small amount if your tolerance is lower.
How long does Blackberry Moonstones Autoflower take to grow?
Blackberry Moonstones Autoflower runs from seed to harvest in about 8 to 10 weeks, since as an autoflower it starts flowering on its own after a few weeks rather than waiting for a light-cycle change. That quick, self-timed cycle means you can grow it all season and even fit more than one run into a warm year, which is one of the main appeals of an auto.
What does Blackberry Moonstones Autoflower taste like?
Blackberry Moonstones Autoflower has a rich, sweet flavor led by ripe berry and blueberry notes from its Blackberry Kush and Blue Moonrocks heritage. Linalool brings the soft, sweet and floral quality behind the berry character, and nerolidol adds a delicate floral, lightly woody depth. A proper three to four week cure really brings that fruity sweetness forward on the inhale.
How much does Blackberry Moonstones Autoflower yield?
Blackberry Moonstones Autoflower is a strong indoor producer, giving around 550 g/m² in a well-run tent, with a more modest 120-200 g per plant outdoors, so it does best indoors. Results depend on light, pot size and canopy health, so start it in its final pot, feed it lightly, and keep an open canopy so the lower buds develop well.
Is Blackberry Moonstones Autoflower good for beginners?
Yes. Blackberry Moonstones Autoflower is a beginner-friendly plant: it is a compact auto at around 1.2 m, feminized so there is no sexing, and it finishes fast in 8 to 10 weeks. Its even, predictable growth takes a lot of the guesswork out of a first grow, though its exceptionally high THC means you should dose the finished buds carefully.
