How to Grow Blackberry Moonrocks
Blackberry Moonrocks is a potent, heavily indica-dominant feminized strain that crosses Blue Moonrocks with a Blackberry Kush male. It is an 80/20 indica with a high 26-33% THC, a sweet berry and blueberry flavor, and a focused, happy, relaxed effect. Short, resinous and richly fruity, it is a rewarding strain to grow, especially where space is tight.
As a feminized photoperiod strain, Blackberry Moonrocks lets you control the grow: you keep it in vegetative growth under long days for as long as you like, then switch the lights to trigger flowering. It finishes flowering in about 8 to 10 weeks, and outdoors it is ready to harvest in October, giving you a compact, resinous plant with a sweet, berry-forward profile.
Recommended Strains
Blackberry Moonrocks
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THC | 26% - 33% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 80% Indica / 20% Sativa |
Blackberry Moonrocks 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 |
Potent, flavorful and beginner-friendly, Blackberry Moonrocks is a rewarding strain to grow. You can see the full genetics and buy Blackberry Moonrocks seeds on the strain page, and browse the rest of our feminized seeds alongside it.
Strain Profile at a Glance
| THC | High (26-33%) |
|---|---|
| Lineage | Blue Moonrocks x Blackberry Kush (male) |
| Type | Feminized |
| Genetics | 80% Indica / 20% Sativa |
| Climate | Continental |
| Flowering time | 8-10 weeks |
| Harvest | October (outdoors) |
| Height | 3.94 ft / 1.2 m |
| Yield indoor | 1.8 oz/ft² (550 g/m²) |
| Yield outdoor | 12.35-22.93 oz/plant (350-650 g/plant) |
| Grow difficulty | Easy, beginner-friendly |
| Flavors | Berry, Blueberry |
| Effects | Focused, Happy, Relaxed |
Promos & Deals
Vegetative Growth and Flipping to Flower
Blackberry Moonrocks is a feminized photoperiod strain, so it flowers in response to the light cycle rather than on its own schedule. You keep it in vegetative growth under long days, usually 18 hours of light to 6 of darkness, for as long as you want to build its size and structure. This is where you set the frame of the plant, so give it room, healthy roots and steady feeding before you make the switch.
When the plant is the size you want, you flip the lights to a 12/12 cycle, 12 hours of light and 12 of darkness, to trigger flowering. From that point it takes about 8 to 10 weeks to finish. Because it is a short, compact plant that stays around 1.2 m, it is especially easy to manage in small spaces, and light training during veg helps open the canopy and even out the bud sites to make the most of its modest frame.
Climate and Where to Grow It
Blackberry Moonrocks suits a continental climate with warm summers and grows well both indoors and outdoors where it gets strong light. Because it is a photoperiod plant, outdoor growers should time it so it finishes in October, before the colder part of the season sets in, while indoor growers can run it year-round under a controlled light cycle. Its short 1.2 m frame makes it one of the easier plants to keep discreet and manageable.
Its high 26-33% THC places it firmly among our high-THC seeds, and its compact, heavily indica-dominant structure sits naturally in our indica seeds. Its genuine kush heritage, from the Blackberry Kush side, places it among our kush strains, and you can explore both parents through the Blue Moonrocks and Blackberry Kush pages.
On yield it is a solid producer, giving around 550 g/m² indoors and 350-650 g per plant outdoors, so there is good weight here to go with the flavor. Keep temperatures around 68-80°F (20-27°C) and the humidity steady through flowering so the dense, resinous buds ripen clean.
Feeding Schedule (EC Guide)
Blackberry Moonrocks is a resinous plant that feeds moderately, so build up gradually rather than pushing it hard. Feed it steadily through veg, shift toward bloom nutrients as it starts flowering, then flush at the end so the sweet berry and blueberry notes come through clean. The ranges below are a starting guide; adjust to your water and medium.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.5-0.7 | Light feed while roots establish |
| Vegetative | 1.2-1.6 | Build nitrogen as the plant grows |
| Early flower | 1.6-1.9 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.8-2.1 | Peak bloom feed for dense, resinous buds |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Once flipped to 12/12, Blackberry Moonrocks flowers for about 8 to 10 weeks, and outdoors it is ready around October. It builds dense, chunky, resin-coated buds that develop a sweet berry and blueberry aroma over a rich base as they ripen, often with deep, dark hues. That sweet, berry scent and heavy frost are the signature of its Blackberry Kush and Blue Moonrocks heritage, and the resin it packs on is one of its calling cards.
Yields are solid, around 550 g/m² indoors and 350-650 g per plant outdoors on a well-grown specimen, so there is good weight to go with the flavor. Keep the dense colas supported and the canopy open so light reaches the lower sites, feed it well through flower, and harvest when most of the trichomes have turned cloudy with a few amber for the fullest berry, blueberry flavor and the most rounded effect.
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 matters with such dense, resinous buds, because they can stay damp in the middle while the outside dries, and a gentle dry protects the sweet berry and blueberry aroma that defines the strain.
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 full sweet berry character and smooths the smoke, turning a freshly dried harvest into the rich, fruity result Blackberry Moonrocks is known for.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Blackberry Moonrocks is a very resinous plant, so its trim is excellent for dry sift, bubble hash or rosin. That heavy resin and its sweet, berry aroma make the trim genuinely valuable, turning offcuts into a potent, flavorful concentrate run rather than waste, a real bonus from such a high-THC strain.
Flavor and Terpenes
Blackberry Moonrocks leads with a sweet berry and blueberry flavor over a rich, dark-fruit base, the profile it inherits from its Blackberry Kush and Blue Moonrocks parents. It is a smooth, full-bodied smoke, and a good cure brings that sweet, berry character forward in the jar and on the inhale, with the deep fruit giving it its signature taste.
Its terpene profile frames that flavor. Linalool brings a soft, gently floral note that rounds out the sweet berry, while nerolidol adds a soft, woody, subtly floral depth underneath. The sweet berry and blueberry notes themselves come through strongly from its genetics, with these two terpenes building the soft, floral frame around that rich, fruity core.
Effects and Best Use
With its high 26-33% THC and heavily indica-dominant 80/20 make-up, Blackberry Moonrocks delivers a potent, well-rounded experience. It is reported as focused, happy and relaxed, pairing a clear, good-natured head with a comfortable, settled body. The potency is genuinely high, so a measured dose goes a long way, especially for newer smokers who may prefer to start slow.
That focused, happy, relaxed profile makes it a flexible choice for the afternoon or evening, well matched to its sweet, berry flavor. The combination of real potency, a rich fruit taste and a comfortable, settled body is exactly why Blackberry Moonrocks stands out among high-THC, indica-dominant strains.
Common Problems and Pro Tips
Blackberry Moonrocks is forgiving and beginner-friendly, and its short, compact size makes it one of the easier strains to manage, especially in a small tent. Its dense, resinous buds do ask for a clean finish, so in flowering keep the air moving and the humidity steady so those tight colas ripen without trapping moisture at the heart of the bud.
Because it suits a continental climate, time an outdoor grow so it finishes in October before the cold, and make the most of its compact frame with light training: topping and low-stress training during veg open the canopy and spread the bud sites, which helps a short plant like this yield more. Support the heavy colas as they fill out.
As a pro tip, feed it moderately rather than heavily, then flush properly at the end so the sweet berry and blueberry notes come through clean. Protect the terpenes with a full three to four week cure, save the resinous trim for concentrates, and harvest when most trichomes are cloudy with a few amber for a rich, flavorful result.
FAQ
Is Blackberry Moonrocks a feminized strain?
Yes. Blackberry Moonrocks is a feminized photoperiod strain, so it produces female plants and flowers in response to the light cycle. You keep it under long days to grow its size, then flip the lights to a 12/12 cycle to start flowering. That control lets you dial in exactly how big the plant gets before it blooms, which suits any grow space.
How much THC does Blackberry Moonrocks have?
Blackberry Moonrocks is a potent, high-THC strain, testing from about 26% up to 33% depending on the phenotype and how it is grown. Combined with its heavily indica-dominant 80/20 genetics, the result is a focused, happy, relaxed effect. It is well worth dosing carefully if you are newer to strong strains, since the potency is genuinely high.
How tall does Blackberry Moonrocks get?
Blackberry Moonrocks is a short, compact plant that stays around 1.2 m, which makes it one of the easier strains to keep discreet and to manage in a small tent. Despite its size, it is a strong producer, so light training during veg helps you make the most of its compact, bushy frame and even out the canopy.
How long does Blackberry Moonrocks take to flower?
Once you flip it to a 12/12 light cycle, Blackberry Moonrocks flowers for about 8 to 10 weeks before it is ready to harvest. Outdoors, it finishes around October. Because it is a photoperiod plant, you control the vegetative stage, so you can grow it to the size you want before switching the lights to begin flowering.
What does Blackberry Moonrocks taste like?
It has a sweet berry and blueberry flavor over a rich, dark-fruit base, the profile it gets from Blackberry Kush and Blue Moonrocks. Linalool brings a soft, floral note and nerolidol a soft, woody depth, while the sweet berry comes through from its genetics. A proper three to four week cure brings that sweet, berry character forward on the inhale, smooth and full-bodied.
Is Blackberry Moonrocks indica or sativa?
Blackberry Moonrocks is heavily indica-dominant, at an 80/20 split, so it grows as a short, sturdy plant with dense, resinous buds, staying compact at around 1.2 m and finishing in about 8 to 10 weeks of flowering. That balance shows in its focused, happy, relaxed effect, which pairs a clear head with a comfortable, settled body.
