Sweet Amnesia Haze XL Auto by Sweet Seeds – 4th Gen Autoflowering Sativa Power

Sweet Amnesia Haze XL Auto by Sweet Seeds delivers a powerful sativa experience in a fast, reliable autoflowering package, offering complex incense-citrus aromas and an uplifting, energizing high that keeps you creative and alert.

Stuck in a rut with strains that barely scratch the surface of what sativa can be? You’re not alone. Many growers settle for weak highs, bland flavors, or plants that barely survive.

That limited approach means missing out on vibrant energy, rich sensory experiences, and the satisfaction of harvesting dense, resinous buds in record time. You end up with less flavor, less potency, and less joy from your grow.

Sweet Amnesia Haze XL Auto breaks that cycle. This fourth-gen autoflower packs the legendary 'Cordobesa' Amnesia Haze genetics into a fast, resilient plant that thrives in any setting—delivering big yields, intense aromas, and a clear-headed high, all in just 8–9 weeks from seed.

Indoor Powerhouse: Big Yields in Tight Spaces

Even in a small grow tent, this sativa stretches tall and proud, reaching up to 1.20 m (3.94 ft) under strong lighting. It fills the space with a deep, incense-like aroma—sweet, musky, with zesty lemon and woody undertones—that tells you something special is happening.

You’ll love how it responds to gentle LST (low-stress training), letting you shape the plant for maximum light exposure. With yields hitting 400–600 g/m² (14–21 oz/ft²), you get serious production without the wait. Just keep humidity under control in flowering, and you’ll be rewarded with frosty, trichome-covered colas.

Pro tip: Start in its final 18–27 L pot to avoid transplant stress and let those roots fly. Pair it with a quality Sweet Seeds nutrient line for optimal resin development.

Outdoor Freedom: Fast, Discreet & Flavorful Harvests

Take this strain outside and it becomes your stealthy summer weapon. Whether you're growing on a balcony, rooftop, or in a remote garden, it finishes fast—perfect for beating autumn rains or avoiding attention.

It handles Mediterranean and temperate climates like a champ, producing 50–200 g/plant (1.76–7.05 oz/plant) of aromatic bud. The tall, sativa structure loves sunlight, and with a little wind protection, it develops thick, resinous flowers.

Its resistance to mold and pests makes it ideal for less-than-perfect conditions. For extra root strength in soil, consider using Sweet Seeds’ recommended root boosters to maximize uptake and resilience.

How to Choose the Best Use for You

Whether you're a home grower, a traveler, or someone who values discretion and speed, this strain adapts to your rhythm.

• If you’re more of a home cultivator, its indoor yield and aroma will blow you away.
• If you’re more of an outdoor adventurer, its fast cycle and resilience make it your go-to.
• If you want creative energy without sedation, its sativa high is perfectly balanced.
• If you’re short on time, its 8–9 week turnaround is a game-changer.

Advantages and benefits that show up in every case

• Harvest in just 8–9 weeks—no long waits, no seasonal stress
• Produces dense, resin-heavy buds with a complex, incense-citrus aroma
• Delivers a clear, uplifting high perfect for daytime creativity
• Easy to grow with high resistance to mold and pests
• Consistent genetics from a trusted breeder—few surprises
• Saves space and time without sacrificing potency or flavor

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Autoflowering
• Dominance: Sativa (75%) / Indica (25%)
• Genetics: Amnesia Haze 'Cordobesa' × S.A.D. Sweet Afgani Delicious Auto (SWS24)
• Life cycle: 8–9 weeks from germination to harvest
• Indoor yield: 400–600 g/m² (14–21 oz/ft²)
• Outdoor yield: 50–200 g/plant (1.76–7.05 oz/plant)
• Indoor height: 60–120 cm (23.62–47.24 in)
• Outdoor height: 60–120 cm (23.62–47.24 in)
• Difficulty: Low to medium
• Structure: Tall, vigorous, good branching
• Climate: Temperate, Mediterranean
• Resistance: High resistance to mold and pests
• Training: Suitable for LST, SCROG; avoid topping
• Recommended pot: 18–27 L final pot
• Light: 18–20 h throughout cycle
• Temperature: 22–26 °C (veg), 20–25 °C (flowering)
• 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 carbon filter if needed
• THC: 15–20%
• CBD: 0.5%
• Aromatic profile: Incense, lemon, musk, wood, citrus, sweet
• Flavour: Citrus, sweet, musky, woody
• Effect: Energetic, creative, uplifting – ideal for daytime use

How to grow the Sweet Amnesia Haze XL Auto

Fast, sativa-dominant autoflower from Sweet Seeds. Ideal for beginners and experts wanting quick, flavorful harvests. Resilient and high-yielding in 8–9 weeks.

Safe start: Germinate in dark, moist environment at 22–25 °C.

• Use starter cubes or paper towels for best results
• Transplant when taproot is ~1 cm long
• Handle gently to avoid root stress
• Start in final 18–27 L pot to prevent shock
• Sweet Seeds recommends root stimulants for faster establishment

Stable seedling: Protect from overwatering and light stress.

• Water lightly until 2–3 nodes appear
• Keep humidity at 60–70%
• Use low-intensity light (CFL or LED)
• Introduce mild nutrients after first true leaves
• Mycorrhizae boost root resilience naturally

Directed growth: Maximize structure and light exposure.

• Apply 18–20 h light throughout the cycle
• Use LST to spread canopy and increase yield
• Avoid topping or FIM—autoflowers don’t recover well
• Ensure airy substrate: coco or light soil mix
• Support tall stems early with soft ties

Flowering by stages: Focus on resin and aroma development.

• Expect stretch in first 1–2 weeks of flowering
• Lower humidity to 40–50% to prevent mold
• Boost PK in mid-flowering for denser buds
• Ensure strong airflow around colas
• Watch trichomes: harvest when milky with slight amber

Harvest, drying and curing: Lock in flavor and smoothness.

• Flush 7–10 days before harvest to improve taste
• Cut branches and hang upside down
• Dry at 18–22 °C and 50–60% RH for 7–10 days
• Cure in jars, burping daily for 2–4 weeks
• Final product is smooth, aromatic, and potent

Frequently Asked Questions

How long does Sweet Amnesia Haze XL Auto take to grow?

From seed to harvest, it takes just 8–9 weeks, making it perfect for quick, successive grows or beating bad weather outdoors.

Is this strain good for beginners?

Absolutely. It’s forgiving, resistant to pests and mold, and doesn’t require advanced techniques—just consistent light and proper watering.

What kind of high does it produce?

An uplifting, cerebral sativa high—energizing, creative, and great for daytime use. It won’t lock you to the couch, but heavier doses may bring mild relaxation.

Can I grow it indoors and outdoors?

Yes! It thrives in both environments. Indoors, expect high yields under strong lights. Outdoors, it loves sun and finishes fast, ideal for Mediterranean climates.

Does it smell strong during flowering?

Yes, it has a powerful incense-citrus aroma. Use a carbon filter indoors to stay discreet, especially in the final weeks.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown a lot of autos, but Sweet Amnesia Haze XL Auto stands out. I ran it in my 60x60x160 cm tent under a 250W LED, and it stretched to 1.10 m (3.61 ft) in just 8 weeks. The smell was incredible—like walking into a headshop in Amsterdam.

What surprised me was the resin. The buds were so sticky they gummed up my scissors. I got 580 g/m² (20.46 oz/ft²) on my second try, using a Sweet Seeds nutrient regimen. For flavor and effect, it’s my go-to for daytime sessions. If you want fast, potent, and aromatic—this is it.