Mack And Crack Auto by Seed Stockers – High-Yielding Sativa-Dominant Autoflower with Citrus-Diesel Aroma

Mack And Crack Auto by Seed Stockers is a high-yielding, sativa-dominant autoflowering strain that delivers massive harvests of frosty, aromatic buds in just 11 weeks, making it a top choice for growers seeking potency, speed, and ease.

Worried your autoflower won’t deliver big buds or strong effects?

It’s frustrating when you invest time and space only to end up with airy colas, weak potency, or plants that barely make a dent in your stash jar. Many autoflowers promise big yields but fall short when it counts.

What if you keep growing weak or underperforming plants?

You’ll waste precious grow cycles, nutrients, and electricity on underwhelming results. Worse, you might lose confidence in autos altogether and go back to photoperiods—missing out on their speed and simplicity. The cycle of disappointment continues: germinate, wait, harvest little, repeat.

Mack And Crack Auto delivers massive, resin-rich yields with minimal fuss

This sativa-leaning powerhouse combines the legendary potency of The MAC with the fast, robust nature of Green Crack Auto. It grows vigorously, handles beginner mistakes, and rewards you with dense, trichome-covered buds that pack up to 28% THC. Whether you're growing indoors or outdoors, this strain finishes strong in just 11 weeks—no light cycle changes needed.

Why Mack And Crack Auto is your next high-performance autoflower

With genetics rooted in Miracle Alien Cookies and Green Crack, this strain strikes the perfect balance between elite potency and grower-friendly resilience. It’s ideal for those who want a fast turnaround without sacrificing quality. Whether you're a novice looking for a forgiving plant or a seasoned grower stacking harvests, Mack And Crack Auto offers a rare combo: beginner ease, massive yields, and a cerebral, energizing high that lasts.

Key features and benefits

• Reaches up to 28% THC for a strong, uplifting, and relaxing effect that’s perfect for daytime use.
• Produces massive yields—up to 300g per plant outdoors and 550 g/m² (1.83 oz/ft²) indoors under optimal conditions.
• Finishes in just 11 weeks from seed to harvest, allowing for multiple outdoor cycles per season.
• Thrives both indoors and outdoors, showing strong resistance to mold and pests thanks to its robust genetics.
• Emits a bold citrus-herbal aroma with diesel and creamy undertones, turning heads when dried and cured.
• Stretches significantly during flowering, developing long colas perfect for SCROG or SOG setups.
• Requires minimal training—just light defoliation to boost airflow and light penetration to lower buds.

Common doubts—clear answers

Let’s tackle the real questions you might have before hitting “add to cart”.

• You think that autos can’t be potent. In reality, Mack And Crack Auto reaches up to 28% THC, rivaling top photoperiod strains.
• You think that high yield means high maintenance. In reality, it’s forgiving and thrives with basic care and standard nutrients.
• You think that sativa-dominant autos get too tall. In reality, while it stretches, its structure is manageable indoors with early topping or LST.
• You think that complex genetics mean instability. In reality, Seed Stockers ensures consistent, stable phenotypes across batches.

How to grow Mack And Crack Auto successfully

Maximize your harvest with these simple, proven steps for strong growth and dense buds.

1. Start in the final pot (18–27 L) to avoid transplant stress—ideal for autoflowers.
2. Use a well-aerated soil or coco mix; consider Monkey Coco from Monkey Soil for excellent drainage and root development.
3. Provide 18–20 hours of light daily throughout the entire cycle.
4. Water when the top inch of soil feels dry; avoid overwatering, especially in early stages.
5. Apply Athena Pro Line Core from the start to support vigorous growth and nutrient uptake.
6. Lightly defoliate large fan leaves during early flowering to improve light penetration.
7. Boost resin and calyx size in mid-flowering with a PK booster like Monster PK 58/60.
8. Harvest when trichomes turn milky to amber for a balanced cerebral and physical effect.

Technical specifications

• Breeder / Brand: Seed Stockers
• Type: Autoflowering
• Dominance: Sativa-dominant hybrid (60% sativa / 40% indica)
• Genetics: Green Crack Auto × The MAC (Miracle Alien Cookies)
• Life cycle: 11 weeks (germination to harvest)
• Indoor yield: 450–550 g/m² (1.50–1.83 oz/ft²)
• Outdoor yield: 150–300 g/plant (5.29–10.58 oz/plant)
• Indoor height: 80–110 cm (2.62–3.61 ft)
• Outdoor height: 100–130 cm (3.28–4.27 ft)
• Difficulty: Low to medium
• Structure: Long internodal spacing, vigorous stretch in pre-flowering
• Ideal climate: Temperate, Mediterranean; tolerates mild humidity
• Resistance: Moderate resistance to mold and pests
• Training: Suitable for LST, SCROG, and light defoliation; avoid topping after week 3
• Recommended pot: 18–27 L final pot from the start
• Light cycle: 18–20 h daily (entire cycle)
• Temperature: 22–26 °C (71.6–78.8 °F) in veg; 20–25 °C (68–77 °F) in flower
• Humidity: 60–70% seedling; 50–60% veg; 40–50% flowering
• pH: 6.0–6.5 (soil); 5.8–6.2 (coco/hydro)
• Smell in grow: High – use a carbon filter if growing discreetly
• THC: Up to 28% (approx.)
• CBD: Low (approx. 0.5–1%)
• Aromatic profile: Limonene, myrcene, caryophyllene
• Flavour: Citrus, herbal, diesel, creamy
• Effect: Cerebral, uplifting, relaxing – ideal for daytime use

Frequently Asked Questions

Is Mack And Crack Auto good for beginners?

Yes, it’s very beginner-friendly. It’s forgiving of minor mistakes, grows fast, and doesn’t require advanced techniques to produce impressive results.

Does it smell strongly during flowering?

Yes, it has a high odor profile with pungent diesel and citrus notes. If discretion is key, use a carbon filter like those in our Ventilation and anti-odour section.

Can I grow it outdoors in a rainy climate?

Yes, it has moderate resistance to mold, but avoid overly humid environments. Ensure good airflow and consider using Fungone Concentrate as a preventive measure.

How many seeds should I germinate for a full tent?

In a 120x120 cm tent, 4–6 plants work well. Due to its stretch, give each plant enough space or use LST to control width.

Does it need special nutrients?

No, it performs well with standard cannabis nutrients. Use a balanced base like Athena Pro Line Core and add a PK booster in mid-flowering for bigger buds.

Personal Experience of Pevgrow’s CEO (Alan)

I was skeptical at first—another 'high-THC auto' claim. But Mack And Crack Auto surprised me. I grew five seeds, and three turned into stretchy powerhouses, nearly hitting 1.30 m (4.27 ft) indoors. I used SCROG to manage them, and the yield was insane: over 500 g/m² without hydroponics. The aroma during drying? Like sour pineapple and diesel—unique and unforgettable. The high is clean, uplifting, and lasts for hours. My only tip: don’t over-prune. These plants need their leaves to fuel those massive colas. If you want a fast, potent, and reliable auto, this one’s a no-brainer.