Sweet Mimosa XL Auto® – Sweet Seeds – 4th Gen Autoflower with Citrus & Earthy Aroma, High THC 19-23% · Fast 9-Week Harvest

Sweet Mimosa XL Auto® by Sweet Seeds is a powerful 4th generation autoflower that delivers big yields, bold citrus-mandarin flavor, and a creative high—all in just 9 weeks from seed to harvest.

Feeling overwhelmed by complicated grows and underwhelming harvests? You’re not alone. Many new growers jump in without a clear plan, only to end up with weak plants, poor resin, or buds that don’t live up to the strain’s hype.

That lack of structure leads to wasted time, money, and energy. You might think the seeds are bad—when really, it’s the process that failed you. Without the right rhythm, even top genetics can fall flat.

The solution? Let Sweet Mimosa XL Auto® guide you. This isn’t just another autoflower—it’s a streamlined, high-performance grow that practically runs itself. With stable genetics, explosive vigor, and a forgiving nature, it turns chaos into clarity. Just plant, maintain, and watch it thrive.

Why This Strain Just Works

Sweet Mimosa XL Auto® was bred to simplify success. It’s the autoflowering evolution of the legendary Mimosa, crossed with Cream Mandarine Auto® for rock-solid resilience and fast flowering. No guesswork. No stress. Just consistent, high-impact results.

• Delivers 500–600 g/m² (17.6–21.2 oz/m²) indoors thanks to dense, resin-coated colas
• Reaches 0.60–1.30 m (1.97–4.27 ft) with strong branching—perfect for small spaces
• Ready in just 9 weeks from germination, no light cycle changes needed
• Thrives in soil or coco with minimal training—ideal for LST but not aggressive pruning
• Resistant to mold and pests, making it great for humid or unpredictable climates

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Autoflowering
• Dominance: Sativa-dominant hybrid (53.4% Sativa, 45% Indica, 1.6% Ruderalis)
• Genetics: Mimosa [Clementine (Tangie × Lemon Skunk) × Purple Punch (Larry OG × Grand Daddy Purple)] × Cream Mandarine Auto®
• Life cycle: 9 weeks from germination to harvest
• Indoor yield: 500–600 g/m² (17.6–21.2 oz/m²)
• Outdoor yield: 60–200 g/plant (2.12–7.05 oz/plant)
• Height (indoor): 0.60–1.30 m (1.97–4.27 ft)
• Height (outdoor): 0.60–1.30 m (1.97–4.27 ft)
• Difficulty: Low to medium
• Structure: Vigorous stretch in early flowering, long main cola, abundant side branching
• Climate: Performs best in temperate to Mediterranean climates; tolerates mild humidity
• Resistance: Good resistance to botrytis and pests
• Training: Suitable for LST and light topping; avoid FIM or aggressive pruning
• Recommended pot: 18–27 L final pot for autos
• Light cycle: 18–20 h daily throughout the entire cycle
• Temperature: 22–26 °C (71.6–78.8 °F) in veg, 20–25 °C (68–77 °F) in flower
• Humidity: 60–70% seedling, 50–60% veg, 40–50% flower
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• THC: 19–23%
• CBD: 0.1%
• Aromatic profile: Dominant terpenes include limonene, myrcene, and caryophyllene
• Flavour: Citrus, mandarin, orange, earthy
• Effect: Uplifting, creative, stimulating—perfect for daytime use

How to Grow Sweet Mimosa XL Auto® for Maximum Results

Get the most out of your Sweet Mimosa XL Auto® with this expert-backed grow guide. Simple, effective, and optimized for flavor, yield, and ease.

Quick overview

Autoflower from Sweet Seeds · 9-week cycle · Low to medium difficulty · Ideal for indoor tents or outdoor patios.

• Starts flowering automatically—no light switch needed
• Best in 18–27 L pots with well-aerated soil or coco
• Use 18–20 h light daily from seed to harvest
• Flavor peaks when cured slowly in glass jars
• Link to autoflowering seeds for more fast-growing genetics.

Safe start

Launch your grow with strong roots and zero stress.

• Germinate in moist paper towels at 22–25 °C (71.6–77 °F)
• Transplant when the taproot is ~1 cm (0.4 in) long
• Use small 1–2 L pots initially to avoid overwatering
• Add StartBooster Aptus to boost early root development
• Keep humidity high (60–70%) in the first week

Directed growth

Guide your plant to maximize structure and light exposure.

• Move to final 18–27 L pot by day 10–14
• Apply gentle LST to open up the canopy
• Water only when the top 2–3 cm (1 in) of soil is dry
• Feed lightly—autos don’t need heavy nutrients
• Ensure strong airflow to strengthen stems

Efficient flowering

Support resin production and bud density during peak bloom.

• Reduce humidity to 40–50% to prevent mold
• Boost with The Missing Link (TML) for enhanced terpene and resin production
• Avoid topping or defoliation—autos can’t recover fast
• Watch trichomes: harvest when milky with slight amber for balanced effect
• Flush 7–10 days before harvest for smoother smoke

Harvest and refinement

Lock in flavor, potency, and smoothness with proper post-harvest care.

• Cut branches and trim sugar leaves with sharp scissors
• Dry buds at 18–22 °C (64.4–71.6 °F) and 50–60% RH for 10–14 days
• Cure in glass jars, burping daily for 2–4 weeks
• Store in a cool, dark place for long-term freshness
• Enjoy the full citrus-earthy profile after proper curing

Frequently Asked Questions

How long does Sweet Mimosa XL Auto® take to grow?

From germination to harvest, it takes approximately 9 weeks. There’s no need to change light cycles—this autoflower does it all on its own.

What kind of yields can I expect outdoors?

You can expect 60–200 g/plant (2.12–7.05 oz/plant), depending on sunlight, climate, and care. Maximize results with full sun and a 27 L pot.

Does it turn purple?

Yes—some phenotypes develop striking purple and reddish hues in the leaves and flowers during late flowering, especially in cooler temperatures.

Is it good for beginners?

Absolutely. With its resilience, fast cycle, and forgiving nature, Sweet Mimosa XL Auto® is a top choice for novice growers.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Sweet Mimosa XL Auto® in my 1 m² tent with 600W HPS and a 20 L pot. From day one, it showed insane vigor—doubled in height within a week of flowering. I used a rich organic mix with bat guano, and by week 6, the smell was unreal: fresh mandarin and sweet earth. I kept it simple—no topping, just light LST. At week 9, I harvested 580 g/m² of frosty, dense buds. After a 3-week cure, the flavor exploded: citrus upfront, earthy finish, and a high that kept me creative all afternoon. No pests, no issues. This one’s a keeper.