Blackberry Gum Auto Seeds by Seed Stockers – Fruity Indica-Dominant Autoflower with 20–26% THC

Blackberry Gum Auto seeds from Seed Stockers deliver a powerful, relaxing high with a delicious fruity-candy flavor. This fast-growing, high-THC autoflower thrives indoors or outdoors, producing massive, colorful buds in just 11 weeks. Ideal for intermediate growers seeking quality and potency.

Are you still stuck with autoflowers that look boring and taste like hay?

Let’s be real: most autoflowering strains are grown for speed, not flavor or beauty. They grow fast, sure — but often deliver bland tastes, green-only buds, and yields that barely fill a jar. You end up with average smoke that doesn’t impress anyone.

That limited approach means missing out on what autoflowers can truly offer: top-shelf quality without the wait. You’re stuck with more plants, more space, and more hassle — just to get decent results.

Blackberry Gum Auto changes the game. This isn’t just another fast grow — it’s a full-sensory experience packed into an 11-week cycle. With vibrant purple hues, a rich candy-berry aroma, and THC levels up to 26%, it delivers premium quality without sacrificing speed. Whether you're growing in a tent, on a balcony, or in a greenhouse, this strain adapts and excels.

Indoor growing: big yields in tight spaces

Got a small grow room or a 120 cm tent? Blackberry Gum Auto is your secret weapon. Thanks to her compact, branchy structure, she fills limited space with dense, resinous colas — no pruning needed.

She thrives under 18/6 or 20/4 light cycles and loves organic nutrients like Bio Bloom BioBizz to boost terpene production. In soil or coco, expect up to 550 g/m² (1.94 oz/ft²) of aromatic, trichome-covered buds.

Pro tip: start her in her final pot — no transplanting. Use an aerated mix (¾ soil + ¼ coco coir) to prevent overwatering and support strong root development from day one.

Outdoor & urban grows: discreet, fast, and colorful

Living in the city with just a balcony? Blackberry Gum Auto is the ultimate stealth grow. Her low-medium height (0.80–1.10 m / 2.62–3.61 ft) keeps her under the radar, while her resistance to mold and pests makes her perfect for unpredictable weather.

Plant her in spring or early summer, in a 20 L pot, and let her soak up the sun. She’ll reward you with 150–200 g (5.29–7.05 oz) of colorful, purple-tinged buds — no light pollution issues thanks to her autoflowering genetics.

And yes, she’s a looker: those deep purple hues at harvest make her a living piece of art — and a great conversation starter.

How to choose the best setup for you

Still unsure if she’s right for your style? Here’s how to match her to your vibe:

• If you're a stealth grower with limited space, go for indoor or balcony grows.
• If you love organic, soil-based growing, she’ll shine in a living soil mix.
• If you're in a cold climate with short summers, she’s your best bet for a full harvest.
• If you want big yields without the wait, she’s a no-brainer.
• If you value flavor and aroma as much as potency, she won’t disappoint.

Benefits that shine in every grow

• Massive yields in record time — up to 550 g/m² indoors.
• Stunning visual appeal with purple and blue hues at harvest.
• Rich, complex flavor: sweet berries, caramel, and citrus notes.
• Powerful relaxing effect — perfect for evening wind-down.
• Resilient plant with high resistance to mold and pests.
• Easy to grow — ideal for intermediate cultivators.
• No light cycle stress — perfect for urban environments.

Technical specifications

• Breeder / Brand: Seed Stockers
• Type: Autoflowering
• Dominance: Indica-dominant (90%)
• Genetics: Bubble Gum × Blueberry × Auto Blueberry
• Life cycle: 11 weeks (77 days) from germination to harvest
• Indoor yield: 500–550 g/m² (1.76–1.94 oz/ft²)
• Outdoor yield: 150–200 g/plant (5.29–7.05 oz/plant)
• Indoor height: 80–110 cm (2.62–3.61 ft)
• Outdoor height: 100–120 cm (3.28–3.94 ft)
• Difficulty: Intermediate
• Structure: Compact, branchy, vigorous
• Resistance: High resistance to mold, pests, and cold
• Training: Suitable for LST; avoid topping or FIM
• Recommended pot: 18–27 L final pot
• Light: 18–20 h/day throughout the cycle
• THC: 20–26%
• Flavor: Fruity, candy, blueberry, caramel, citrus
• Effect: Relaxing, narcotic, euphoric, sleep-inducing

How to grow Blackberry Gum Auto seeds

Quick overview: autoflowering · Seed Stockers · 11-week cycle · intermediate difficulty · ideal for indoor tents or urban outdoor grows.

Safe start:
Germinate in a moist environment at 22–25 °C and high humidity. Transplant when the taproot is ~1 cm long. For a stronger start, Natural Clone de Trabe boosts root development and reduces stress.

Stable seedling:
Keep RH at 60–70% and provide gentle light. Water lightly but frequently. Use an airy substrate to prevent root rot and encourage early vigor.

Directed growth:
Maintain 18–20 h of light daily. Use a ¾ soil + ¼ coco coir mix for optimal aeration. Avoid pruning — her short cycle won’t allow recovery.

Flowering by stages:
From week 4, reduce RH to 40–50%. Support heavy colas with stakes if needed. Add Bio Bloom BioBizz during peak flowering to enhance resin and aroma.

Harvest, drying and curing:
Harvest when trichomes are milky to amber for maximum relaxation. Flush 7–10 days before. Dry at 18–22 °C and 50–60% RH, then cure for 3–4 weeks to deepen flavor.

Frequently Asked Questions

Can I grow Blackberry Gum Auto in a small tent?

Yes, she’s perfect for 60x60x120 cm or 100x100x200 cm tents. Her compact size and high yield make her ideal for limited spaces.

Does she need special nutrients?

No — she thrives on standard flowering formulas. Organic options like Bio Bloom enhance her terpene profile and flavor.

Is she good for beginners?

She’s labeled intermediate due to her high THC and feeding sensitivity, but with basic care, even novice growers succeed.

Can I grow her outdoors in a cold climate?

Absolutely. Her resistance to cold and fast cycle make her ideal for Nordic regions or short summers.

What does she taste like?

Sweet blueberries, ripe blackberries, caramel undertones, and a hint of citrus — like dessert in a joint.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown dozens of autoflowers, but Blackberry Gum Auto stands out. I grew her in a 120 cm tent with a 300W LED and got 130 g from a single plant — and the buds were stunning: deep purple, frosty with trichomes, and smelling like a candy store.

What I love most is how forgiving she is. I once overwatered her in week 3 — no problem. She bounced back fast. I also tried her outdoors on my rooftop in Barcelona; even with some rain, she resisted mold and finished strong.

For flavor lovers, she’s a must. For urban growers, she’s a game-changer. And for anyone tired of boring autoflowers, she’s the upgrade you’ve been waiting for. I grow her every season — and always keep a jar ready for movie nights.