Auto Amnesia XXL by Advanced Seeds – Sativa-Dominant Autoflower with High THC & Citrus-Spice Flavor

Auto Amnesia XXL by Advanced Seeds is a powerhouse sativa-dominant autoflower that delivers massive yields, intense citrus-spice flavor, and a long-lasting cerebral buzz — all in just 10–11 weeks from seed to harvest.

Are you stuck with small, weak autoflowers that barely scratch the surface?

You’ve tried autos before — short, bushy, low-yielding plants that fizzle out before they really get going. You end up with a few sad nugs and a buzz that doesn’t last. It’s frustrating when you want big, energetic highs but your plants just can’t keep up.

Imagine waiting weeks only to harvest mediocre buds with zero kick?

That’s the reality for most autoflower growers. You invest time, space, and nutrients, only to get bland smoke and lackluster effects. The worst part? You’re stuck with it — no topping, no training, and no second chances. It feels like you're always halfway there, never fully satisfied.

Auto Amnesia XXL changes everything — big size, big flavor, big brain buzz.

This isn’t your average auto. It grows tall — up to 1.70 m (5.58 ft) outdoors — with thick, resin-coated colas that stretch like a photoperiod. You get the ease of an autoflower with the presence of a sativa legend. Citrus and spice explode on the inhale, followed by a clear, creative high that lifts your mood and keeps you sharp all day.

What you get with Auto Amnesia XXL

Bred from elite Auto Amnesia and high-THC Auto Haze, this strain combines vigor, potency, and flavor into one unstoppable package. No compromises.

• Sativa-dominant autoflowering seeds — fast, powerful, and easy to grow
• THC up to 14% — strong cerebral effects with lasting energy
• Indoor yield: 550–600 g/m² (1.94–2.12 oz/ft²)
• Outdoor yield: up to 250 g (8.82 oz) per plant
• Harvest in just 70–80 days from germination
• Height: 0.80–1.00 m (2.62–3.28 ft) indoors, 1.10–1.70 m (3.61–5.58 ft) outdoors
• Intense citrus and spicy aroma — bold and unmistakable

How your grow routine transforms

With Auto Amnesia XXL, you stop settling. You don’t need advanced techniques or risky training — just give it light, space, and good soil. It grows fast and tall, filling your grow room or balcony with dense, trichome-rich buds. No more guessing if it’ll be enough — this strain delivers harvests that last.

And when it’s time to enjoy? You’ll taste the sharp lemon zing and warm spice, feel the mental clarity kick in, and realize you’ve finally found an auto that doesn’t hold back.

Advantages and benefits you’ll notice from day one

• Massive yields without the long wait — harvest in under 11 weeks
• Minimal feeding needed — thrives even with basic care
• Resin-heavy buds that sparkle like diamonds
• Perfect for social moments or creative sessions
• Great for beginners — forgiving and consistent
• Discreet start, explosive finish — small seedling, giant plant
• Fills your space with a rich, spicy-citrus scent

Grow tips for maximum performance

Auto Amnesia XXL is built for success, but a few smart moves unlock its full potential. Start strong and stay consistent.

• Use 18–20 hours of light daily — no need to switch
• Plant in 18–27 L (5–7 gal) pots for best root development
• Train gently with LST — avoid topping or FIM
• Provide strong airflow to prevent mold in dense buds
• Support heavy colas with stakes or trellis netting
• Harvest when trichomes turn milky to amber for peak effect

Pair it with these Pevgrow favorites

Boost your results by combining Auto Amnesia XXL with premium nutrients and root boosters from our grow shop.

• Start with RootStimulator HY-PRO for faster germination and stronger roots
• Feed with Bio Bloom BioBizz to maximize flower density and resin
• Use B’Cuzz Silic Boost Atami for thicker stems and stress resistance

Frequently Asked Questions

What is the THC level of Auto Amnesia XXL?

Auto Amnesia XXL has a THC content of up to 14%, delivering a strong, long-lasting cerebral effect ideal for daytime use.

Is this strain suitable for beginners?

Yes, it’s very beginner-friendly. It grows fast, handles minor mistakes well, and doesn’t require complex training or feeding schedules.

Can I grow Auto Amnesia XXL in cold climates?

It prefers warm, sunny conditions. In cooler areas, grow it in a greenhouse or during peak summer months to ensure full development.

How tall does Auto Amnesia XXL get?

Indoors: 0.80–1.00 m (2.62–3.28 ft). Outdoors: 1.10–1.70 m (3.61–5.58 ft), making it one of the tallest autoflowers available.

Does it need a lot of nutrients?

No, it’s efficient. Use moderate feeding — overfeeding can harm the plant. A simple coco or soil mix works great.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Auto Amnesia XXL on my rooftop in Murcia last summer, and damn — it went wild. I planted five seeds in 20 L pots, gave them 20/4 light, and let nature do the rest. By week 8, they were over 1.50 m (4.92 ft) tall, each covered in frosty trichomes. The smell? Like lemon peel and incense — thick enough to catch attention two balconies over.

I didn’t top them — autos don’t like that — but I did low-stress training to spread the canopy. Yield was insane: over 580 g/m² in my tent, and one outdoor plant gave me 260 g (9.17 oz). The high is pure sativa — uplifting, creative, keeps you moving. I wouldn’t smoke it before bed unless you like staring at the ceiling for hours. If you want a no-nonsense, high-impact auto that actually impresses, this is it.