Thin Mint x Sour Pinot Auto by Barneys Farm – 26% THC Autoflowering Hybrid with Diesel & Mint Flavor

Thin Mint x Sour Pinot Auto by Barneys Farm is a high-THC autoflowering hybrid that delivers a potent 26% THC punch, a rich terpene profile, and a fast 70–75 day seed-to-harvest cycle — perfect for growers who want quality, speed, and flavor without compromise.

Are you stuck with boring, low-impact autoflowers?

Most autoflowering strains promise fast harvests but leave you with bland flavors, weak effects, or spindly yields. You end up waiting weeks only to harvest small, airy buds that barely spark a buzz.

And let’s be real — if you’re investing time, space, and energy, you want something that actually hits. Something that smells like a dispensary shelf and feels like a real sativa spark. Not just green filler.

Thin Mint x Sour Pinot Auto flips the script. This isn’t just another fast grow — it’s a high-performance autoflower that packs the complexity of a classic with the convenience of a modern machine. From the first sniff to the final puff, it’s built to impress.

Before growing with Thin Mint x Sour Pinot Auto

Without this strain, your grow might lack excitement — predictable genetics, average yields, and forgettable effects. You’re either stuck with slow photoperiods or autos that don’t deliver on their promises.

• Choose a final pot size of 18–27 L early to avoid transplant stress
• Use well-aerated soil or coco for strong root development
• Start with a pH of 6.0–6.5 in soil or 5.8–6.2 in hydro
• Set up 18–20 hours of light daily — no light cycle changes needed
• Keep temperatures between 22–26 °C and humidity at 50–60% during veg

During cultivation: watch it thrive

This 60% sativa-dominant hybrid grows medium-tall with strong branching and a solid stretch during pre-flowering. It develops dense, trichome-coated buds with hints of purple under cooler temps.

It’s resistant to mold and pests, making it ideal for both indoor and outdoor grows. The aroma builds quickly — expect a punchy mix of mint, diesel, and ripe grapes.

Use low-stress training (LST) gently to open up the canopy, but avoid topping or FIM — this is an auto, not a project.

After harvest: flavor, yield, and satisfaction

After just 70–75 days, you’ll harvest up to 450–500 g/m² indoors or 180–250 g per plant outdoors. The buds are frosty, compact, and bursting with terpenes.

Minimal maintenance needed — just dry slowly at 18–22 °C and 50–60% RH, then cure for 2–4 weeks to unlock the full minty-diesel depth.

Short- and long-term advantages and benefits

• Harvest in under 11 weeks with no light cycle changes
• Enjoy a complex flavor of mint, grape, and diesel with every puff
• Feel a creative, euphoric high that lifts mood without sedation
• Grow confidently with mold-resistant, vigorous plants
• Maximize space with medium height: 0.90–1.20 m (2.95–3.94 ft) indoors
• Yield like a photoperiod with the ease of an auto
• Perfect for daytime use or social creativity sessions
• Stable genetics from a legendary breeder — no guesswork

Technical specifications

• Breeder / Brand: Barneys Farm
• Type: Feminized autoflowering
• Dominance: 60% sativa, 40% indica
• Genetics: Thin Mint Auto × Sour Pinot Auto
• Life cycle: 70–75 days from seed to harvest
• Indoor yield: 450–500 g/m² (14.96–16.61 oz/ft²)
• Outdoor yield: 180–250 g/plant (6.35–8.82 oz/plant)
• Indoor height: 90–120 cm (35.43–47.24 in)
• Outdoor height: 100–140 cm (39.37–55.12 in)
• Difficulty: Low to medium
• Structure: Medium internodal spacing, strong branching
• Ideal climate: Temperate, Mediterranean, continental
• Resistance: High resistance to mold and pests
• Training: Suitable for LST, not for topping or aggressive pruning
• Final pot size: 18–27 L recommended
• Light cycle: 18–20 hours daily throughout life cycle
• Flowering time: Autoflowers in 70–75 days
• THC: 26%
• CBD: Low (approx. 0.1%)
• Aromatic profile: Limonene, caryophyllene, linalool
• Flavor: Diesel, grape, mint, sweet, earthy
• Effect: Creative, euphoric, uplifting, social
• Smell in grow: High — use a carbon filter if needed

How to grow Thin Mint x Sour Pinot Auto seeds

Get the most out of this high-THC auto with a simple, effective grow plan tailored to its genetics.

Quick overview

Autoflowering hybrid from Barneys Farm, 70–75 days total, low to medium difficulty, ideal for indoor or outdoor grows in temperate climates.

Safe start

Launch your grow with strong roots and healthy seedlings.

• Germinate seeds at 21–32 °C in a dark, moist environment
• Transplant when the taproot is 1–2 cm (0.4–0.8 in) long
• Use airy soil or coco to prevent root rot
• For faster rooting, Clon Fix boosts early development
• Keep humidity at 60–70% for the first week

Directed growth

Keep your plants vigorous and on track during veg.

• Maintain 18–20 hours of light daily
• Water when the top inch of soil feels dry
• Use Bio Heaven BioBizz for organic growth and strong structure
• Apply low-stress training (LST) to spread the canopy
• Avoid aggressive pruning — autos don’t recover well

Efficient flowering

Maximize bud density and terpene production.

• Keep RH at 40–50% to prevent mold
• Ensure strong airflow with oscillating fans
• Switch to bloom nutrients with higher PK
• Use Bud Factor X Advanced Nutrients in mid-flower for resin boost
• Monitor trichomes: harvest when milky with slight amber

Harvest and refinement

Nail the final steps for premium quality.

• Flush plants 7–10 days before harvest
• Cut branches and hang dry at 18–22 °C and 50–60% RH
• Dry for 10–14 days, then cure in jars for 2–4 weeks
• Open jars daily to release moisture and prevent mold
• Enjoy the full depth of mint, diesel, and grape on the nose

Frequently Asked Questions

Is Thin Mint x Sour Pinot Auto indica or sativa?

It’s a 60% sativa-dominant hybrid, offering a balanced effect that’s uplifting and creative with a gentle body relaxation.

How long does it take to grow this strain?

From seed to harvest, it takes just 70–75 days, making it one of the fastest high-THC autos on the market.

What does it taste like?

You’ll taste a bold mix of diesel, ripe grapes, sweet mint, and earthy undertones — complex, bold, and unforgettable.

Can I grow it outdoors?

Absolutely. It thrives in temperate to Mediterranean climates and yields 180–250 g per plant with minimal issues.

Does it smell strong during flowering?

Yes, it has a high odor profile. Use a carbon filter if growing indoors for discretion.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Thin Mint x Sour Pinot Auto in my 1.2 x 1.2 m tent under a 600W LED. I started with a 20 L pot and a soil-coco mix. Germination was fast — all seeds popped in 36 hours.

I used LST early to control height and open up bud sites. No topping — I’ve learned the hard way that autos hate it. I fed lightly, focusing on root health with Bio Nova FreeFlow in week 2.

The smell hit hard by week 4 — minty diesel with a wine-like twist. I ran a carbon filter, no complaints from the neighbors.

Flowering started automatically, no stress. By week 9, trichomes were milky with a hint of amber. I flushed for 7 days, dried for 12, cured for 3 weeks.

Yield was 472 g/m² — dense, frosty, purple-tinged buds. The high is clean, creative, and social. I took it to a friend’s jam session — everyone asked what strain it was. Now it’s a staple in my rotation.