Critical Auto by Blimburn Seeds – Fast 8–10 Week Autoflowering Indica Hybrid

Critical Auto by Blimburn Seeds is a fast, resilient autoflowering hybrid that delivers potent, resin-rich buds in just 8–10 weeks, perfect for growers who want quick, high-quality results without the hassle.

Still stuck with slow-growing photoperiods that take forever to harvest? You know the drill: months of waiting, constant light cycle changes, and the stress of timing everything just right. It’s exhausting, and honestly, it kills the joy of growing.

Now imagine harvesting top-shelf buds in under 10 weeks—no light switches, no guesswork. That’s the reality with Critical Auto. This strain cuts through the complexity and delivers consistent, relaxing harvests faster than almost anything else out there.

Why Critical Auto Ends the Wait for Real Results

Critical Auto isn’t just fast—it’s smart. Bred from Critical Mass and Lowryder, it inherits rock-solid structure, rapid flowering, and a rich terpene profile. Whether you're growing in a closet or a backyard, this strain adapts quickly and starts rewarding you early. No more 4-month marathons. Just plant, feed, and watch it explode into dense, trichome-covered colas.

Key features you’ll notice from the very first grow

• Ready to harvest in just 8–10 weeks from seed—no light cycle changes needed.
• Produces up to 700 g/plant (24.69 oz) outdoors and 400 g/m² (1.31 oz/ft²) indoors under optimal conditions.
• Compact height of 1.3 m (4.27 ft), ideal for stealth grows and small spaces.
• Rich in myrcene, limonene, and caryophyllene—delivers herbal, lemon, and woody flavors with relaxing effects.
• 70% indica dominance ensures a calming body high, perfect for unwinding after a long day.
• Low THC (10–14%) makes it accessible for beginners and those sensitive to strong psychoactive effects.
• Thrives in temperate climates and handles minor stress, pests, and humidity swings like a pro.

Who this strain is especially interesting for

Whether you're new to growing or a seasoned cultivator looking for a reliable, no-fuss autoflower, Critical Auto fits like a glove. It’s especially valuable for those who want:

• Growers who prioritize speed and simplicity over complex training routines.
• Users looking for a smooth, relaxing experience without heavy sedation.
• Medical users seeking relief from stress, insomnia, or muscle tension—thanks to its balanced terpene profile.
• Outdoor growers in temperate zones like California, Colorado, or Spain who want multiple harvests per season.
• Discreet cultivators who need a short, bushy plant that won’t draw attention.

How to integrate Critical Auto into your grow routine without overcomplicating things

Start with a 20L pot and quality soil—no need to transplant. Use a simple nutrient schedule and keep light at 18/6 from seed to harvest. Water when the top inch of soil feels dry, and avoid topping or aggressive pruning. For stronger roots, consider adding BioTabs Tablets at planting. During flowering, boost resin production with Liquid Weight Green Planet for denser buds and enhanced flavor.

Technical specifications

• Breeder / Brand: Blimburn Seeds
• Type: Autoflowering
• Dominance: 70% Indica / 30% Sativa
• Genetics: Critical Mass × Lowryder
• Life cycle: 8–10 weeks (seed to harvest)
• Indoor yield: 350–400 g/m² (1.15–1.31 oz/ft²)
• Outdoor yield: 600–700 g/plant (21.16–24.69 oz/plant)
• Indoor height: 1.3 m (4.27 ft)
• Outdoor height: 1.3 m (4.27 ft)
• Difficulty: Low – ideal for beginners
• Structure: Compact, bushy, short internodal spacing
• Climate: Temperate – thrives in 21–27°C (70–80°F)
• Resistance: High resistance to mold, pests, and stress
• Training: Suitable for LST – avoid topping or FIM
• Recommended pot: 18–27 L final pot from the start
• Light: 18–20 hours daily throughout the cycle
• Humidity: 55–60% veg, 40% flowering
• pH: 5.5–6.5
• THC: 10–14%
• CBD: Low
• Terpenes: Myrcene, Limonene, Caryophyllene, Linalool, Alpha-Pinene
• Flavor: Herbal, Lemon, Woody
• Effect: Relaxed, Happy, Talkative – best for evening use

How to grow Critical Auto – Fast & Foolproof Guide

Quick overview: autoflowering · Blimburn Seeds · 8–10 week cycle · low difficulty · ideal for indoor closets or outdoor patios in temperate climates.

Safe start
Germinate in a warm, dark place at 21–26°C (70–79°F) with high humidity.

• Use the paper towel method—avoid touching seeds with bare hands.
• Plant taproot-down when it reaches ~1 cm (0.4 in).
• Start in final 20L pot to avoid transplant stress.
• Add BioTabs Tablets for stronger root development.
• Keep soil moist but never soggy—overwatering kills seedlings.

Stable seedling
First true leaves appear in 5–7 days—keep conditions steady.

• Use 18–20 hours of light daily—no changes needed.
• Water lightly with pH-balanced water (5.5–6.5).
• Ensure good airflow to prevent mold.
• Avoid nutrients for first 10–14 days.
• Apply Raziel - Root Bio-Stimulant to boost early growth.

Directed growth
Veg phase is short—focus on structure, not size.

• Use low-stress training (LST) to open the canopy.
• Feed with mild nutrients—avoid nitrogen overload.
• Keep temperatures between 22–26°C (72–79°F).
• Upgrade to Kit Top Grow Box Bio Plagron for organic growth.
• Monitor for pests—this strain is resistant but not immune.

Efficient flowering
Flowers automatically—no light switch required.

• Reduce humidity to 40% to prevent mold.
• Switch to bloom-focused nutrients after week 4.
• Support heavy colas with soft ties if needed.
• Use Liquid Weight Green Planet for denser buds.
• Flush with plain water 7–10 days before harvest.

Harvest and refinement
Harvest when 70–80% of trichomes turn milky-white.

• Cut branches and hang upside down in a dark, cool room.
• Dry at 18–22°C (64–72°F) and 50–60% RH for 7–10 days.
• Cure in glass jars for 2–4 weeks, burping daily.
• Store in airtight containers away from light and heat.
• Enjoy the full flavor and smooth smoke after proper cure.

Frequently Asked Questions

Is Critical Auto good for beginners?

Yes, Critical Auto is perfect for beginners. It’s forgiving, fast, and doesn’t require complex training or light cycle changes. Just plant, water, and harvest in under 10 weeks.

How much yield can I expect from Critical Auto?

Indoors, expect 350–400 g/m² (1.15–1.31 oz/ft²). Outdoors, you can harvest 600–700 g/plant (21.16–24.69 oz), especially in sunny temperate climates.

Does Critical Auto smell strong during grow?

Yes, it has a medium to strong skunky-lemon aroma. If you're growing discreetly, use a carbon filter like those found in Tent Set Pro Aptus to control odor.

Can I grow Critical Auto outdoors in colder climates?

It prefers temperate zones, but with protection (like a greenhouse), it can handle mild cold. Avoid frost and prolonged rain, as wet buds can develop mold.

What’s the best way to maximize resin production?

Use bloom boosters like Liquid Weight Green Planet, keep humidity low in flowering, and harvest at peak trichome maturity.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown dozens of autoflowers, but Critical Auto stands out for its reliability. I used to grow photoperiods that took 4 months—way too long for my patience. With Critical Auto, I get two harvests in that time. I grew it in a 20L pot with Plagron soil, 18/6 light, and minimal feeding. By week 8, the trichomes were milky, and the buds were rock-hard. The smoke is smooth, with a lemony herbal punch and a deep body buzz. It’s my go-to for evening relaxation. I’d recommend it to anyone who wants quality without the wait.