Mimosa Bruce Banner XL Auto by Sweet Seeds – 8th Gen Autoflower with Citrus-Sweet Aroma & Euphoric High

Mimosa Bruce Banner XL Auto by Sweet Seeds is an 8th generation autoflowering powerhouse that delivers big yields, explosive aromas, and a creative, long-lasting high—all in just 8 weeks from seed to harvest. This strain combines the best of two legendary US lineages for a truly next-level experience.

Struggling to find an autoflower that actually delivers on flavor, potency, and yield without needing a PhD in plant science? You’re not alone. Most autos fizzle out with weak effects, bland taste, or mold-prone buds. And when you’re investing time and space, settling for mediocrity isn’t an option.

Here’s the truth: many autoflowers are rushed, unstable genetics that leave you with sparse, stretchy plants and underwhelming harvests. You end up wasting lights, nutrients, and patience—only to get a few grams of harsh, flavorless bud. Worse, some strains are so sensitive that a slight humidity spike turns your canopy into a botrytis buffet.

Enter Mimosa Bruce Banner XL Auto. This isn’t your average auto. Bred by Sweet Seeds from an elite Mimosa clone and their own Bruce Banner Auto®, it’s been stabilized over 8 generations for maximum performance. You get a vigorous, compact plant with dense, resin-drenched colas that explode with a sweet-citrus aroma—think fresh mandarin, ripe strawberry, and a hint of cypress with cheesy depth. With THC levels between 18–26%, the high is uplifting, euphoric, and deeply creative, perfect for daytime inspiration or evening flow states. Indoors, expect 450–550 g/m²; outdoors, plants can produce up to 170 g each. At 50–130 cm (1.70–4.27 ft), it fits perfectly in tight spaces and handles temperature swings like a pro. Plus, its resistance to mold and pests means fewer headaches and more peace of mind. This is what a premium autoflower should be: fast, fearless, and full of flavor.

Why This Strain Delivers Big Flavor and Bigger Yields

Bred from two US legends, Mimosa Bruce Banner XL Auto inherits the best traits of both parents: the aromatic complexity of Mimosa and the power and resilience of Bruce Banner Auto®. The result? A plant that grows fast, smells incredible, and produces heavy, trichome-coated buds without needing advanced techniques. Whether you're growing in soil or coco, this strain responds well to light training and thrives under strong light. Its sativa-dominant structure (64.4% Sativa) promotes strong vertical growth and excellent branching, while its autoflowering nature keeps the cycle short and predictable. No more guessing when to flip—just plant and harvest in 8 weeks.

Key Features and Benefits at a Glance

• 8-week harvest cycle – get from seed to smoke faster than almost any other high-THC strain
• 450–550 g/m² indoors – massive yields for an auto, rivaling many photoperiods
• 18–26% THC – potent, euphoric, creativity-boosting effects that last
• Sweet-citrus aroma with mandarin, strawberry, cypress, and smoked cheese notes – a true sensory delight
• 50–130 cm (1.70–4.27 ft) height – compact enough for stealth grows, tall enough for great yields
• High resistance to mold and pests – fewer worries, more successful harvests
• Stable 8th generation genetics – consistent performance, plant after plant

How to Grow Mimosa Bruce Banner XL Auto for Best Results

For a strong start, germinate seeds in a moist, dark environment at 22–25 °C. Once the taproot is about 1 cm (0.39 in) long, transplant carefully into a well-aerated substrate. Given its size and vigor, use a final pot of 18–27 L to allow full root development. For optimal growth, consider using Humushemp Root Stimulator during transplant to boost root establishment and reduce stress. Keep light at 18–20 hours daily throughout the cycle. Water when the top layer of soil feels dry, and avoid overfeeding—this strain is nutrient-hungry but can show deficiencies if pushed too hard. In mid-flowering, support heavy colas with soft ties to prevent breakage. Maintain humidity at 40–50% during flowering to prevent mold, and ensure strong airflow with a good exhaust system. For maximum resin and flavor, flush nutrients 7–10 days before harvest. Dry slowly at 18–20 °C and 50–60% RH, then cure for 2–4 weeks in glass jars for peak aroma and smoothness.

Frequently Asked Questions

How long does Mimosa Bruce Banner XL Auto take to harvest?

From germination to harvest, this strain takes just 8 weeks, making it one of the fastest high-THC autos available.

What kind of yields can I expect outdoors?

Outdoors, each plant can produce between 50 and 170 grams (1.76–6.00 oz), depending on climate and care.

Is this strain good for beginners?

Yes, its stable genetics and resistance to stress make it suitable for growers of all levels, though it does require attention to feeding and humidity.

Does it smell during grow?

Yes, it has a strong, sweet-citrus aroma, especially in late flowering. Use a carbon filter like hemp-based odor absorbers or an active filter to stay discreet.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Mimosa Bruce Banner XL Auto in my 1.20 x 1.20 m (3.94 x 3.94 ft) tent under a 600W LED. I started three seeds directly in 20L pots—no pre-potting. They popped in 36 hours, and by week 3, they were already showing that classic sativa stretch. I used light LST to spread the canopy and kept them on 18/20 light. I fed them a balanced coco schedule, ramping up PK in week 5. The smell hit hard by week 6—like walking into a candy store mixed with a pine forest. No mold, no pests, no issues. Harvested at 57 days, dried for 10 days, cured for 3 weeks. Yield was 512 g/m², and the high? Pure creative fire. I’ve smoked a lot of autos, but this one stands out. It’s not just potent—it’s elegant. If you want flavor, yield, and speed in one package, this is it. I’ve already re-ordered.

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Autoflowering
• Genetics: Mimosa (Clementine x Purple Punch) × Bruce Banner Auto® (SWS91)
• Dominance: Sativa-dominant hybrid (64.4% Sativa, 35.5% Indica, 0.1% Ruderalis)
• Full cycle: 8 weeks from germination to harvest
• Indoor yield: 450–550 g/m² (15.87–19.42 oz/ft²)
• Outdoor yield: 50–170 g/plant (1.76–6.00 oz/plant)
• Indoor height: 50–130 cm (1.70–4.27 ft)
• Outdoor height: 50–130 cm (1.70–4.27 ft)
• THC: 18–26%
• CBD: 0.1%
• Flavor: Citrus, sweet, mandarin, strawberry, cypress, smoked cheese
• Effect: Creative, euphoric, stimulating, long-lasting
• Difficulty: Medium
• Structure: Tall, vigorous, good branching
• Resistance: High resistance to mold and pests
• Training: Suitable for LST and low-stress techniques; avoid topping or FIM
• Recommended pot size: 18–27 L final pot
• Light cycle: 18–20 hours daily throughout the entire cycle
• Smell during grow: High – carbon filter recommended