Sour Blueberry Feminized Seeds – Legendary Sour Diesel & Blueberry Cross

Sour Blueberry feminized seeds by Humboldt Seeds offer you a masterful fusion of two legendary strains, delivering a Sativa-dominant experience that's both explosively cerebral and mouth-wateringly delicious. This is your ticket to growing a plant that combines the iconic fuel-like punch of Sour Diesel with the sweet, berry-rich depth of Blueberry, resulting in a truly premium and memorable harvest.

Ever planted a seed only to end up with a finicky, low-yielding plant that smells nothing like the breeder promised? That disappointment is real. You invest weeks of care, only to harvest airy buds with a weak high and a bland taste that doesn't justify the effort. It's frustrating, wastes your time and resources, and leaves you wondering if those glowing reviews were even real. But what if you could skip the guesswork and grow a proven champion? Sour Blueberry is the solution. It's a vigorous, resin-packed plant bred for reliability, delivering the intense flavour and powerful effect you're chasing, every single time.

Quick spec sheet of Sour Blueberry

• Breeder: Humboldt Seeds
• Type: Feminized Photoperiod
• Genotype: 40% Indica / 60% Sativa
• Genetics: Blueberry x Sour Diesel #2
• Indoor Flowering: 60–65 days
• Indoor Yield: 400–600 g/m² (approx. 11.7–17.5 oz/ft²)
• Outdoor Harvest: Mid-October (Northern Hemisphere)
• Outdoor Yield: 1000–2000 g/plant (approx. 35.3–70.5 oz/plant)
• Outdoor Height: 1–3 m (3.28–9.84 ft)
• THC: Approx. 14%
• CBD: Approx. 0.1%

Key advantages over more basic options

This isn't just another berry strain. Sour Blueberry brings a level of genetic stability and predictable performance that cheaper, untested genetics simply can't match.

• Legendary Parentage: Born from the iconic Blueberry and Sour Diesel #2, guaranteeing a flavour and effect profile that's both classic and exceptional.
• Vigorous & Forgiving: Its robust growth makes it suitable for growers of various skill levels, tolerating minor mistakes without sacrificing yield.
• Fast Flowering for a Sativa: A 9-week flowering period is relatively quick for a Sativa-dominant plant, getting you to harvest faster.
• High Yield Potential: Whether indoors under a light or outdoors soaking up the sun, this plant is known to produce heavy, rewarding harvests.
• Resin Production: It develops hard, elongated buds absolutely brimming with sticky trichomes, perfect for extraction or just enjoying incredibly potent flowers.

Real benefits you're going to notice

Beyond the specs, Sour Blueberry transforms your grow space and your sessions. You'll experience a plant that stretches just enough to fill a screen or bush out beautifully, responding well to simple LST techniques. The aroma during the late flowering stage is a complex mix of sour citrus and wild berries, a sure sign of the quality to come. After a proper cure, the smoke delivers a clear, cerebral, and invigorating high that's perfect for creative sessions or socializing, followed by a deeply satisfying physical relaxation. The flavour is a true highlight—a tangy, fruity explosion that makes every puff a pleasure.

How to grow Sour Blueberry: A straightforward guide

Get your Sour Blueberry seeds off to a strong start for the best results.

1. Germination & Seedling: Germinate in a warm (22–25°C / 71–77°F), humid environment. Once sprouted, provide mild light and avoid overwatering. A product like Mykos WP can be added to the root zone to encourage explosive early growth.
2. Vegetative Growth: Maintain an 18/6 light cycle. This plant can show vigorous stretch, so consider low-stress training (LST) to manage height and promote multiple colas. It thrives in temperate to Mediterranean climates outdoors.
3. Flowering Transition: Switch lights to 12/12 to induce flowering. You'll see a noticeable stretch (pre-flowering) in the first few weeks. Reduce humidity gradually to 40-50% to protect the dense buds.
4. Flowering & Nutrition: Feed a balanced diet, tapering off nitrogen in favour of phosphorus and potassium in the mid-to-late stages. Ensure good airflow around the buds to prevent moisture issues.
5. Harvest & Cure: Harvest when trichomes are mostly milky with some amber for a balanced effect. Dry slowly in a dark space at 16-20°C (60-68°F) and 50-60% RH. Cure in jars for at least 2-4 weeks to perfect the flavour and smoothness.

Frequently Asked Questions

Is Sour Blueberry good for beginners?

Yes, its vigorous nature and good resistance make it a forgiving choice for novice growers who follow basic guidelines.

How strong is the smell during growth?

The aroma is pronounced, especially in late flower, with strong sour and fruity notes. Using a carbon filter in indoor setups is highly recommended for discretion.

Can I grow Sour Blueberry outdoors in cooler climates?

It prefers temperate or Mediterranean climates. In cooler regions, a greenhouse is ideal to ensure it finishes fully by mid-October and to protect it from early frosts.

What's the best way to maximize yield with this strain?

Employ training techniques like LST or SCROG to create an even canopy. Providing consistent nutrition and plenty of light during flowering is key. A bloom booster like Brutal Bloom during peak flowering can help increase bud density and resin production.

Personal Experience of Pevgrow's CEO (Alan)

I've run Sour Blueberry in both my personal and test gardens, and it consistently stands out. Outdoors, it's a beast—reaching over 2.5 meters (8.2 ft) easily and producing massive, colas that turn stunning shades of purple when the nights get cool. The structure is excellent for outdoor growing, with strong branches that support the weight. Indoors, it responds brilliantly to SCROG, filling the net with solid, resinous buds. Compared to more unstable "hype" strains, this is a workhorse. The high is exactly as advertised: a soaring, creative Sativa lift that doesn't induce anxiety, followed by a gentle, relaxing body effect. The flavour after a proper cure is incredible—like a tart blueberry pie with a diesel-fueled finish. My pro tip? Don't harvest too early. Let those trichomes get nice and cloudy for the full effect.