Sensi Amnesia XXL Auto Seeds – Sensi Seeds Sativa-Dominant Autoflowering Strain for High Yields & Citrus Flavor

Sensi Amnesia XXL Auto is a sativa-dominant autoflowering strain from Sensi Seeds that delivers large, frosty buds, a sweet citrus aroma, and a powerful, cheerful high — all with minimal effort and no light cycle changes needed.

Worried your grow will be a chaotic mess? That your plant will stretch too tall, smell too strong, or underdeliver on flavor and yield? You’re not alone. Many growers start with high hopes but end up battling mold, weak buds, or plants that just won’t cooperate.

That stress builds — you lose sleep, waste time, and risk your harvest. The fear of failure makes you second-guess every move. But what if you could grow a strain that practically takes care of itself, stays compact, and still delivers a massive, aromatic harvest?

Enter Sensi Amnesia XXL Auto. This autoflowering powerhouse combines the legendary Amnesia lineage with resilient Ruderalis to give you a plant that grows strong, stays discreet, and rewards you with up to 500 g/m² of citrus-scented, euphoric bud — no green thumb required.

More Discretion, Fewer Worries

Designed for stealthy grows, Sensi Amnesia XXL Auto stays compact and manageable, making it perfect for tight spaces or low-profile setups. While it does develop a noticeable aroma during flowering, its slender structure and average height let you control the environment with ease.

Its tight internodal spacing keeps the canopy dense without excessive vertical growth, so you won’t need to worry about it hitting your lights. Indoors, it reaches 0.80–1.10 m (2.62–3.61 ft), while outdoor plants typically stay under 1.20 m (3.94 ft). Pair it with a carbon filter from our grow shop to keep odors in check and your grow truly under the radar.

Control Over the Experience

• Autoflowers in 70–85 days from seed — no light schedule changes needed
• Yields up to 500 g/m² (17.6 oz/ft²) indoors with proper care
• Produces 400 g (14.1 oz) per plant outdoors under ideal conditions
• Thrives in soil, coco, or hydro — adapts to your setup
• Low maintenance — no topping or aggressive training required
• Defoliation improves airflow and light penetration, boosting bud quality
• Delivers consistent, resin-rich harvests even for first-time growers

How to Use It Responsibly and Comfortably

Start your grow right by creating a calm, controlled environment. This strain is beginner-friendly but rewards attention to detail.

1. Germinate seeds in a dark, moist environment at 22–25 °C (71.6–77 °F)
2. Transplant carefully into a 18–27 L pot to support full development
3. Use a well-aerated substrate like Light Mix Peat Free for strong root growth
4. Keep humidity at 50–60% during veg and 40–50% in flowering
5. Ensure good airflow to prevent mold, especially in dense bud sites
6. Harvest when trichomes turn milky to amber for your preferred effect
7. Store dried buds in airtight containers away from light and heat

Benefits of Having Everything Under Control

• Enjoy a predictable grow with minimal surprises
• Feel confident in your plant’s resilience and performance
• Experience a smooth, uplifting high without anxiety
• Savor a clean, citrus-forward flavor with every session
• Share high-quality bud with friends and pride in your harvest
• Save time and energy with a low-maintenance, high-reward strain

Technical specifications

• Breeder / Brand: Sensi Seeds
• Type: Autoflowering, feminized
• Dominance: 70% sativa, 30% indica
• Genetics: Original Amnesia × Original Amnesia × Ruderalis
• From seed to harvest: 12–15 weeks
• Flowering time: 10–12 weeks
• Indoor yield: Up to 500 g/m² (17.6 oz/ft²)
• Outdoor yield: Up to 400 g/plant (14.1 oz/plant)
• Indoor height: 0.80–1.10 m (2.62–3.61 ft)
• Outdoor height: Up to 1.20 m (3.94 ft)
• Difficulty: Easy
• Structure: Slender, compact, tight internodal spacing
• Climate: Temperate / continental; tolerates mild fluctuations
• Resistance: Moderate resistance to mold and pests
• Training: Responds well to LST and light defoliation
• Pot size: 18–27 L recommended for autos
• Light cycle: 18–20 hours daily throughout life cycle
• Smell in grow: Medium to high — use carbon filtration if needed
• THC: 15–18%
• CBD: 0–1%
• Flavor: Sweet, citrus, lemon, sour notes
• Effect: Uplifting, cerebral, cheerful, long-lasting

How to Grow Sensi Amnesia XXL Auto Seeds

Optimized for simplicity and yield, this guide helps you grow with confidence.

Quick overview: Autoflowering · Sensi Seeds · 12–15 week cycle · Easy · Ideal for indoor, outdoor, or greenhouse.

Safe start: Germinate in darkness at 22–25 °C with high humidity. For faster rooting, Root It 150ml – Rooting gel boosts early development.

• Use starter cubes or moist paper towels
• Plant root-down immediately after sprouting
• Avoid overhandling — seedlings are delicate
• Keep in indirect light until first true leaves appear
• Transplant once roots are 1–2 cm long

Stable seedling: Focus on root health and steady growth.

• Use a light, airy soil mix with good drainage
• Water lightly — let topsoil dry between irrigations
• Apply mild nutrients after week 2
• Consider BN-Roots - Biomineral root system enhancer for stronger root mass
• Maintain 60–70% RH and 22–26 °C

Directed growth: Support steady development with proper light and airflow.

• Provide 18–20 hours of light daily
• Use LED or HPS with full spectrum
• Train gently with LST to expose bud sites
• Avoid topping — autos don’t recover well
• Defoliate lower leaves to improve airflow

Efficient flowering: Maximize resin and yield in the final stretch.

• Switch to bloom nutrients like Pack de Fertilizantes Top Crop Autoflorecientes
• Lower RH to 40–50% to prevent mold
• Support heavy colas with soft ties
• Flush 7–10 days before harvest
• Harvest when 70% trichomes are milky, 30% amber

Frequently Asked Questions

Is Sensi Amnesia XXL Auto good for beginners?

Yes, it’s ideal for beginners. It’s forgiving, doesn’t require complex training, and handles minor mistakes well. Just keep it fed, lit, and ventilated.

How tall does it get indoors?

Typically 0.80–1.10 m (2.62–3.61 ft), making it perfect for rooms with limited vertical space.

Does it smell strong during flowering?

Yes, it develops a noticeable citrus-pungent aroma. Use a carbon filter if discretion is a priority.

Can I grow it outdoors in a colder climate?

Yes, it tolerates temperate conditions, but performs best in warm, sunny locations. Harvest from May to August depending on your region.

What’s the best way to increase yield?

Use a flowering stimulator, ensure strong light penetration, and apply light defoliation. Avoid overwatering or overfeeding.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown dozens of autos, but Sensi Amnesia XXL Auto stands out. I planted three in my greenhouse last spring — one stayed short at 90 cm, the other two hit 1.10 m. All three were rock solid, no stretch, no stress. I used a simple LST on week 3, just to open up the canopy. By week 8, the buds were swelling like crazy — thick, dense, and covered in trichomes. I ran a small carbon filter, and the lemony-pungent smell was actually pleasant. I harvested at 11 weeks: 470 g/m² from two plants, and the high? Pure sativa joy — uplifting, creative, lasted all afternoon. If you want a no-drama, high-reward auto, this is it.