The Upsetter Feminized Seeds by Humboldt Seed Company – Fast-Flowering Sativa with Tropical Punch

The Upsetter feminized seeds from Humboldt Seed Company are your ticket to a fast, flavorful, and frustration-free harvest of top-shelf Sativa-dominant cannabis. This strain is engineered for growers who want a heavy resin producer with a dazzling tropical aroma and a high that sparks creativity without the crash.

Ever started a grow only to watch your prized plants succumb to mold or produce a disappointing yield? It’s a gut punch, wasting months of care and leaving you with subpar buds. The Upsetter was bred specifically to avoid that heartache. It’s a resilient, fast-finishing plant that shrugs off humidity and pumps out dense, frosty colas loaded with the kind of terpenes that make every session a tropical vacation.

Why The Upsetter is actually worth it for you

If you’re looking for a strain that balances high performance with manageable cultivation, The Upsetter hits the sweet spot. It’s not just another pretty plant; it’s a workhorse designed for real-world growing. Whether you’re tight on space indoors or battling a short outdoor season, its quick 55-60 day flowering time and mold-resistant genetics mean you get a reliable, high-quality harvest without the usual headaches. The payoff is a smoke that’s equally impressive: a clear-headed, energizing buzz perfect for daytime adventures or creative sessions, all wrapped in a flavor profile of ripe mango, tangy citrus, and sweet guava.

Most important features and benefits

• Fast Flowering (55-60 days): Get from seed to harvest faster, allowing for more grows per year or a perfect fit for short outdoor seasons.
• High Mold & Botrytis Resistance: Grow with confidence in humid climates without constantly worrying about bud rot ruining your crop.
• Intense Tropical Terpene Profile: Enjoy a sensory explosion of mango, guava, and citrus flavors and aromas that make every jar opening a delight.
• Potent, Uplifting Sativa Effect (25-30% THC): Experience a clean, creative, and motivating high ideal for daytime use without anxiety or couch-lock.
• High Resin Production: Perfect for making concentrates like hash, rosin, or live resin, maximizing the value of your harvest.
• Beginner-Friendly Growth: Its forgiving nature and robust structure make it an excellent choice for first-time growers.

Typical objections and clear answers

We know you might have doubts before choosing a new strain. Here’s the real deal on The Upsetter.

• You think that fast-flowering strains lack potency. In reality, The Upsetter packs a serious punch with 25-30% THC, proving speed doesn’t mean sacrificing strength.
• You’re worried it won’t handle your humid grow space. In reality, its genetics are specifically selected for high resistance to fungi like botrytis, making it a champion in damp conditions.
• You believe Sativa-dominant plants are too tall and lanky for indoor tents. In reality, while it has a Sativa structure, it responds very well to simple training techniques like LST (Low Stress Training) to keep it manageable and maximize yield.
• You fear the flavor won’t live up to the hype. In reality, the cross of Squirt, Tangie, and Humboldt Dream creates a uniquely complex and fruity terpene profile that consistently earns rave reviews.

How to grow it safely and effectively

To unlock The Upsetter’s full potential, follow this straightforward guide. It’s a forgiving plant, but a little care goes a long way.

1. Start Strong: Germinate seeds in a warm (22-25°C / 71-77°F), moist environment. Once sprouted, transplant into a final pot of 11-20 L (2.9-5.3 gal) to avoid stunting its growth.
2. Veg for Structure: During the vegetative stage under 18/6 light, provide a balanced nutrient regimen. This is the time for gentle LST to encourage bushier growth and more bud sites.
3. Trigger Flowering: Switch lights to 12/12. The plant will stretch, then focus on bud production for the next 55-60 days.
4. Manage the Environment: Maintain lower humidity (40-50%) during flowering to further protect those dense buds. Ensure good airflow around the canopy.
5. Feed for Flowers: As buds form, switch to a bloom-focused nutrient formula higher in phosphorus and potassium to support dense, resinous development.
6. Harvest at Peak: Watch the trichomes. Harvest when most are milky white for a more energetic high, or wait for some amber for a more relaxed effect.
7. Dry & Cure Properly: Dry slowly in a dark space at 18-22°C (64-72°F) and 50-60% RH for 10-14 days, then cure in jars for at least 2 weeks to perfect the flavor and smoothness.

Frequently Asked Questions

Is The Upsetter good for beginners?

Absolutely. Its mold resistance, forgiving nature, and relatively straightforward nutrient needs make it an excellent choice for novice growers looking for a high-quality, high-yielding strain without extreme difficulty.

What does The Upsetter smell like while growing?

The aroma is pronounced and deliciously fruity. Expect strong scents of tropical mango, sweet guava, and zesty citrus that will fill your grow space, so using a carbon filter is highly recommended for discretion.

How tall does The Upsetter get?

Indoors, with some training, you can expect a manageable height of 0.80–1.20 m (2.62–3.94 ft). Outdoors, it can stretch taller, potentially reaching 1.50–2.00 m (4.92–6.56 ft) if given the space and support.

Can I grow The Upsetter outdoors?

Yes, it thrives outdoors in Mediterranean or similar climates. It's ready for harvest in late September to early October in the Northern Hemisphere. Its mold resistance is a huge advantage for outdoor growers.

What's the yield like for The Upsetter?

Yields are generous. Indoors, you can expect approximately 500–600 g/m² (1.61–1.93 oz/ft²). Outdoors, a healthy plant can produce 600–800 g/plant (1.32–1.76 lb/plant) or more under ideal conditions.

Technical specifications

• Breeder / Brand: Humboldt Seed Company
• Type: Feminized Photoperiod
• Dominance: Sativa-dominant Hybrid
• Genetics: Squirt x Tangie x Humboldt Dream
• Indoor Flowering Time: 55–60 days
• Outdoor Harvest (Northern Hemisphere): Late September – Early October
• Indoor Yield: Approx. 500–600 g/m² (1.61–1.93 oz/ft²)
• Outdoor Yield: Approx. 600–800 g/plant (1.32–1.76 lb/plant)
• Indoor Height: Approx. 0.80–1.20 m (2.62–3.94 ft)
• Outdoor Height: Approx. 1.50–2.00 m (4.92–6.56 ft)
• Difficulty: Low to Medium
• THC Level: Approx. 25–30%
• CBD Level: Low (
• Aromatic Profile: Dominant terpenes: Limonene, Pinene, Myrcene
• Flavor: Mango, Guava, Citrus, Tropical Fruit, Herbal Undertones
• Effect: Uplifting, Creative, Happy, Motivated, Calm (non-sedative)

Personal Experience of Pevgrow’s CEO (Alan)

I’ll be honest, when I first saw "The Upsetter," I thought, "Another fast-flowering Sativa that’s all hype and no bite." But this strain genuinely upset my expectations. The vigor from seedling stage is impressive—it just wants to grow. I’ve run it in a semi-humid indoor tent and outdoors in a not-so-perfect Spanish autumn, and both times it laughed at conditions that would stress other plants. The mold resistance is real; those dense buds stayed clean right to the end.

The real magic happens at harvest. The terpene profile is insane—like cracking open a bag of tropical candy. The high is exactly what I look for in a daytime strain: it clears the mental fog, sparks ideas, and puts a smile on my face without any jitters or crash. It’s become a go-to for when I need to be productive but also want to truly enjoy the process. For any grower, beginner or pro, who wants a reliable, heavy-yielding plant that delivers exceptional flavor and a perfect functional high, The Upsetter is a no-brainer.