Auto Big Mac Feminized Seeds – DNA Genetics | Potent Hybrid Auto with High Yields

Auto Big Mac by DNA Genetics delivers a fast, potent, and high-yielding autoflowering experience with minimal effort and maximum discretion.

Are you tired of autoflowers that promise big yields but deliver weak plants or inconsistent results? What if your grow space is limited, your time is tight, or you just want a strain that performs reliably every single time?

Auto Big Mac solves these frustrations by combining legendary Big Mac genetics with a stable autoflowering backbone, giving you a compact, resilient plant that finishes fast and packs a serious punch—every single grow.

Why Auto Big Mac gives you consistent, high-quality results

DNA Genetics stabilized the original Big Mac (itself a cross of Big Bud and Mac 1) into a robust autoflowering version that maintains its potency, flavor, and yield potential. The result is a plant with predictable growth patterns, uniform flowering times, and reliable resin production. Because it’s autoflowering, it’s not dependent on light cycles, so you get the same outcome whether you’re growing indoors under LEDs or outdoors on a balcony.

Factors that influence your results and how to control them

• Pot size: Use a final container of 18–27 L (4.8–7.1 gal) from the start to avoid transplant shock and ensure full root development.
• Light schedule: Provide 18–20 hours of light daily throughout its entire life—no need to switch to 12/12.
• Watering: Water lightly but frequently; autos hate overwatering. Let the top 2–3 cm (0.8–1.2 in) dry between sessions.
• Nutrients: Start with mild feeding; autos are sensitive to nutrient burn. Use a balanced formula like Autoflower SuperMix for steady growth.
• Training: Avoid heavy pruning—only gentle LST (low-stress training) is recommended to open the canopy without stunting growth.
• Climate control: Keep temps between 20–26°C (68–79°F) and humidity at 50–60% during veg, dropping to 40–50% in flower.
• Harvest timing: Monitor trichomes—milky with some amber means peak balance of effect and flavor.
• Discreet drying: Dry in a dark, ventilated space at 18–22°C (64–72°F) and 50–60% RH to preserve terpenes and minimize odor.

Recommended routine for reliable, repeatable success

1. Germinate seeds in a moist paper towel or directly in a light, airy substrate like Monkey Coco Lite.
2. Transplant into your final pot (18–27 L / 4.8–7.1 gal) within 5–7 days of sprouting.
3. Provide 18–20 hours of light daily from seed to harvest—no changes needed.
4. Feed lightly with an autoflower-specific nutrient schedule; increase gradually during peak veg.
5. Support branches in late flower if colas become heavy—use soft ties to avoid damage.
6. Flush for 7–10 days before harvest to ensure a smooth, clean smoke.
7. Record your start date, feeding, and harvest day to replicate your best results.

Advantages and benefits of that consistency

• Confidence: Know exactly when you’ll harvest—no guessing games.
• Less waste: Fewer failed grows mean more value from every seed.
• Faster learning: Repeat the same conditions to refine your technique quickly.
• Full control: You’re in charge—not the plant’s unpredictable genetics.
• Multiple harvests: Run 4–5 cycles per year indoors or 2–3 outdoors in warm climates.

Frequently Asked Questions

What if my Auto Big Mac isn’t flowering on schedule?

Autos flower based on age, not light. If it’s past 5–6 weeks and no flowers appear, check for light leaks (if growing in darkness) or stress from overfeeding. Most likely, it’s just a slightly slower phenotype—give it time.

How do I know I’m feeding correctly?

Healthy leaves are deep green and upright. Yellowing or curling tips usually means overfeeding. Start at ¼ strength and increase only if growth slows. Autos need less food than photoperiods.

Can I top or FIM Auto Big Mac?

Not recommended. Autoflowers have a fixed life cycle, and aggressive pruning can stunt growth or reduce yields. Stick to gentle bending (LST) if needed for light penetration.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown Auto Big Mac three times now—in a tent, on a terrace, and in a closet—and it’s one of the most consistent autos I’ve tested. The first run, I harvested at 58 days with dense, frosty buds that smelled like sweet diesel with a hint of citrus. The second, I pushed it to 63 days for more amber trichomes, and the effect was noticeably more relaxing. Both times, yield was nearly identical: around 450 g/m² (14.8 oz/ft²). What I love is how it stays compact (under 90 cm / 35.4 in) but still produces heavy colas. I use Liquid Weight in the last two weeks of flower to boost density, and it responds beautifully. Just don’t overfeed—this plant thrives on simplicity.

Technical specifications

• Breeder: DNA Genetics
• Type: Autoflowering, feminized
• Dominance: Indica-dominant hybrid (approx. 60% indica / 40% sativa)
• Genetics: Big Mac (Big Bud × Mac 1) × Ruderalis
• Cycle: 8–9 weeks from seed to harvest
• Indoor yield: 450–550 g/m² (14.8–18.1 oz/ft²)
• Outdoor yield: 60–100 g/plant (2.1–3.5 oz/plant)
• Height: 70–90 cm (27.6–35.4 in)
• Difficulty: Low – ideal for beginners
• Structure: Compact, bushy, with strong lateral branching
• Ideal climate: Temperate to Mediterranean; tolerates mild fluctuations
• Resistance: Good resistance to common molds and pests
• Training: Suitable for LST only; avoid topping or heavy pruning
• Recommended pot: 18–27 L (4.8–7.1 gal) final container from start
• Light: 18–20 hours daily throughout entire cycle
• Temperature: Veg: 22–26°C (72–79°F); Flower: 20–25°C (68–77°F)
• Humidity: Seedling: 60–70%; Veg: 50–60%; Flower: 40–50%
• pH: Soil: 6.0–6.5; Coco/hydro: 5.8–6.2
• Smell in grow: Medium—use carbon filter in late flower if discretion is key
• THC: Approx. 20–24%
• CBD:
• Aromatic profile: Dominant terpenes: myrcene, limonene, caryophyllene
• Flavour: Sweet, earthy, and citrusy with diesel undertones
• Effect: Balanced euphoria and physical relaxation—great for evening use