Blackberry Moonstones
Cannabis seeds
by Blimburn Seeds
Blackberry Moonstones Auto Cannabis Seeds by Blimburn Seeds
Blackberry Moonstones Auto is a mostly indica autoflowering cannabis seed that delivers dense, purple-frosted buds with up to 33% THC in just 8–10 weeks from germination. Bred by Blimburn Seeds, this strain crosses the original Blackberry Moonstones (Blue Moonrocks x Blackberry Kush) with a robust ruderalis cut, producing a compact, resilient plant that thrives in tight spaces and cooler climates. If you want berry-drenched terps and serious potency without babysitting a photoperiod plant for months, this is the seed to pop.
Pack Size
Blackberry Moonstones Auto seeds come in packs of 3 feminised seeds (SKU: CSBL0044). Every seed is feminised and autoflowering — no need to sex plants or manage light schedules.
Blackberry Moonstones Auto Specifications
| Spec | Value |
|---|---|
| Seed Bank | Blimburn Seeds |
| Genetics | Blue Moonrocks x Blackberry Kush x Ruderalis |
| Type | Autoflowering, Feminised |
| Dominant | Indica |
| THC | Up to 33% |
| Seed-to-Harvest | 8–10 weeks |
| Max Height | 120 cm |
| Indoor Yield | Up to 550 g/m² |
| Outdoor Yield | Up to 200 g/plant |
| Dominant Terpenes | Linalool, Nerolidol |
| Seeds per Pack | 3 |
Complete your setup: pair Blackberry Moonstones Auto with a propagation kit or root stimulator to give seedlings the strongest possible start. If you're growing indoors, a carbon filter is non-negotiable once these buds start stacking — the berry aroma is loud.
Why Blackberry Moonstones Auto Seeds Deserve a Spot in Your Tent
We've seen plenty of autos that promise the world and deliver a handful of larfy popcorn. Blackberry Moonstones Auto is not that plant. Blimburn Seeds crossed two heavy hitters — Blue Moonrocks and Blackberry Kush — and then stabilised the offspring with ruderalis genetics that actually hold up. The result is a plant that stays under 120 cm, finishes in 8–10 weeks from the moment you drop the seed in water, and still pushes yields up to 550 g/m² indoors. Those numbers rival many photoperiod strains that take twice as long.
The real selling point, though, is what you get at the end. Blackberry Moonstones Auto produces rock-hard, frosty flowers with a purple-green colouring that looks like something out of a seed catalogue — except it actually grows like that. The terpene profile leans heavily on linalool (the same compound that gives lavender its scent) and nerolidol (a woody, floral terpene found in jasmine and tea tree). Together, they create a pungent berry aroma that fills the room the moment you crack a jar. The taste follows through: sweet, fruity, unmistakably blackberry, with a musky undertone on the exhale.
One honest limitation: at up to 33% THC, this is not a casual smoke. If you're growing for friends who only partake occasionally, warn them. A single hit can be overwhelming for someone without tolerance. For experienced consumers, though, the potency is exactly the point. According to research published in the Journal of Clinical Pharmacology (PubMed ID: 23386598), Δ9-tetrahydrocannabinol is the primary psychoactive cannabinoid, and at these concentrations, the effects are intense and long-lasting. Start low, go slow — even if you think you know your limits.
Growing Blackberry Moonstones Auto: From Seed to Harvest
Blackberry Moonstones Auto is one of the more forgiving autos we've come across. The ruderalis backbone gives it genuine hardiness — she handles temperature swings, minor feeding mistakes, and less-than-perfect light without throwing a tantrum. That said, she rewards good care with significantly better yields. Here's how to get the most from your 3-pack.
- Germinate seeds using the paper-towel method or directly in a small pot of lightly moistened seedling soil. Taproots typically emerge within 24–72 hours.
- Transplant into the final container as soon as the seedling shows its first true leaves. Autos don't love root disturbance, so going straight to a 10–15 litre fabric pot avoids transplant shock entirely.
- Provide 18–20 hours of light per day throughout the entire cycle. Blackberry Moonstones Auto doesn't need a light-schedule change to flower — she'll start on her own around week 3–4.
- Feed lightly during the first two weeks, then ramp up with a balanced grow nutrient. Switch to bloom nutrients once you see the first pistils forming.
- Keep temperatures between 20–26°C and relative humidity around 50–60% during veg, dropping to 40–50% during flower to prevent mould on those dense buds.
- Watch for purple colouring to develop in the final 2–3 weeks — cooler night temperatures (around 16–18°C) can intensify the anthocyanin expression and deepen the purple hues.
- Harvest when trichomes are mostly milky with a few turning amber. This typically falls between weeks 8 and 10 from germination. Dry in a dark room at 18–20°C and 55–60% humidity for 10–14 days, then cure in glass jars for at least two weeks.
Blackberry Moonstones Auto vs Other Berry Autos
If you're comparing Blackberry Moonstones Auto against other fruity autoflowering strains, the numbers speak for themselves. The 33% THC ceiling puts it well above most berry-flavoured autos, which typically top out around 20–25%. The 550 g/m² indoor yield is also unusually high for an auto that finishes in under 10 weeks. The closest competitor in the Blimburn lineup would be their Bubblegum Sherbet, which offers a sweeter, more candy-like profile but doesn't quite match the raw potency. If you want the best berry-flavoured auto with maximum punch, Blackberry Moonstones Auto is the one we'd pick.
| Feature | Blackberry Moonstones Auto | Typical Berry Auto |
|---|---|---|
| THC | Up to 33% | 18–25% |
| Seed to Harvest | 8–10 weeks | 9–12 weeks |
| Indoor Yield | Up to 550 g/m² | 350–450 g/m² |
| Max Height | 120 cm | 80–150 cm |
| Dominant Terpenes | Linalool, Nerolidol | Varies |
Terpene Profile: Linalool and Nerolidol in Blackberry Moonstones Auto
The terpene combination in Blackberry Moonstones Auto is what sets it apart from the crowd of generic "berry" strains. Linalool — the same terpene responsible for lavender's calming aroma — delivers a sweet, floral note that sits underneath the dominant blackberry flavour. Nerolidol adds depth with a woody, slightly citrusy character that keeps the profile from being one-dimensionally sweet. When you open a cured jar, the first thing that hits you is ripe blackberry with a floral, almost perfume-like finish. The smoke is smooth, fruity on the inhale, with an earthy, musky note that lingers.
This isn't a strain that smells vaguely "fruity" and leaves you guessing. The berry is front and centre, loud enough that your carbon filter will earn its keep. We'd recommend double-checking your exhaust setup before these plants hit week 5 — by then, the aroma is unmistakable even through a closed tent.
What to Watch Out For
Dense buds and high resin production are brilliant — until humidity creeps up. Blackberry Moonstones Auto's rock-hard flowers can trap moisture inside the bud structure, making them susceptible to bud rot in the final weeks if you're not careful with airflow. Keep a small oscillating fan pointed at the canopy and don't skip the daily inspection once buds start fattening up.
The 120 cm max height is genuine, but some phenotypes stay much shorter — around 60–80 cm. If you're counting on that full 120 cm of canopy for yield calculations, be prepared for variation. Running 4–6 plants per square metre gives you the best chance of hitting that 550 g/m² target, regardless of individual plant height.
And a reminder on potency: up to 33% THC is not a marketing number to gloss over. According to research reviewing the pharmacological effects of cannabis (PubMed ID: 23386598), THC at high concentrations produces pronounced psychoactive effects. Dry mouth and dry eyes are the most commonly reported side effects. If you're growing this for personal use, a little goes a long way.
Frequently Asked Questions
Is Blackberry Moonstones Auto sativa or indica?
Mostly indica. The genetics trace back to Blue Moonrocks x Blackberry Kush, both indica-leaning strains, crossed with ruderalis for autoflowering capability. Expect a compact, bushy plant with broad leaves and dense bud structure typical of indica-dominant varieties.
How long does Blackberry Moonstones Auto take from seed to harvest?
8–10 weeks from germination. Most phenotypes are ready to chop around week 9. Check trichome colour with a jeweller's loupe — harvest when they're mostly milky with a few amber heads for the strongest effect.
What yield can I expect from Blackberry Moonstones Auto indoors?
Up to 550 g/m² under optimal conditions with good lighting (LED or HPS, 18–20 hours daily). Outdoors, expect up to 200 g per plant. Running multiple plants per square metre and training lightly with LST will help maximise canopy coverage.
Does Blackberry Moonstones Auto actually turn purple?
Yes. The anthocyanin expression is genetic, not just a cold-stress trick. That said, exposing plants to cooler night temperatures (16–18°C) in the final weeks will deepen the purple colouring significantly. Even in warm conditions, you'll see purple hues in the calyxes and sugar leaves.
Is Blackberry Moonstones Auto good for small grow spaces?
Very much so. With a max height of 120 cm and most phenotypes staying shorter, this strain fits comfortably in a 60x60 or 80x80 tent. The compact, bushy structure means you won't be fighting with branches poking into your light.
What does Blackberry Moonstones Auto smell and taste like?
Strong blackberry with floral, lavender-like undertones from the linalool terpene. Nerolidol adds a woody, slightly citrusy depth. The taste mirrors the aroma — sweet berry on the inhale, earthy and musky on the exhale. It's loud; a carbon filter is strongly recommended.
Can I grow Blackberry Moonstones Auto outdoors in a cool climate?
Yes. The ruderalis genetics give this strain genuine cold resilience, and the fast 8–10 week cycle means you can harvest before autumn weather turns nasty. She'll perform in northern European summers without issues, though yields will be lower than indoor grows — up to 200 g per plant outdoors.
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.