SAME-DAY DISPATCH WEEKDAYS • GERMINATION GUARANTEE • FREE SEEDS WITH ALL ORDERS (t&c's)

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Summary
Details
Cultivation
About Humboldt Seed Organization
Flowering Time
Short
Indoor Flowering
8-9 weeks
THC %
14 %
CBD %
0.1 %
Sativa %
60 %
Indica %
40 %
Indoor Yield
400-600 g/m2
Outdoor Yield
1000-2000 g/plant
Plant Height
100-300 cm
Effects
Euphoric, Head, Long-lasting, Potent
Aroma & Flavors
Berry, Citrus, Fruit

Humboldt Seed Organization


Founded in 2009 in Humboldt County, California, Humboldt Seed Organization (HSO) brings together a team of veteran breeders with over 25 years of hands-on cannabis experience. Their mission is to combine deep-rooted cultivation knowledge with scientific innovation to produce elite, stable genetics for growers of all sizes—from home enthusiasts to commercial operations.

HSO’s catalog features premium regular and feminized seeds developed through rigorous selection and phenotyping. Each strain is bred with a strong focus on quality, terpene expression, and performance in various environments.

What sets HSO apart is its commitment to regenerative agriculture and sustainability. The team promotes organic, closed-loop practices that respect nature and reduce environmental impact. This ethos extends to their global partnerships, including collaborations with ISO- and GMP-certified pharmaceutical labs and leading universities in the U.S. and Spain.

Now distributed in over 50 countries, HSO is internationally respected for pushing the boundaries of cannabis breeding while preserving the plant’s natural integrity. Overgrow is proud to offer these renowned genetics to South African growers seeking exceptional cannabis from the heart of California’s Emerald Triangle.

Environment
Indoor, Outdoor, Greenhouse
Skill Level
Beginner
Harvest Month
September (NH) | March (SH)
Yield
Xl
Flowering
Photoperiod
Photoperiod
Full Term
Sex
Feminized
Variety
Hybrid
Genetics
Blueberry X Sour Diesel #2
THC Levels
Medium
CBD Levels
Low
Sour Blueberry is a feminised hybrid named after her exquisitely tangy, fruity flavour and scent, simply put, she smells like sour fruit. Flavour-wise, Sour Blueberry delivers a sweet-and-sour blend of wild berries and tangy citrus. This sativa-leaning hybrid produces the most spectacular, uplifting sense of euphoria that will get sativa fans weak at the knees.

Sour Blueberry was born from the cross of two cannabis heavyweights, Sour Diesel #2 and Blueberry. She grows strongly and can reach up to 3m in optimal outdoor conditions.

Her flowers are elongated, incredibly solid and overflowing with gorgeous, gooey resin.

Simply put, she smells like sour fruit. Flavour-wise, Sour Blueberry delivers a sweet-and-sour blend of wild berries and tangy citrus.

Her effect is very cerebral-dominant, typical of Sativa. Expect a long-lasting, extremely potent, energising and uplifting psychoactive experience.

Sour Blueberry grows vigorously and flowers quickly, without much effort at all. She has the potential to stretch, so limiting indoor veg growth may be advisable. Outdoors, she loves the sun and will thrive best in warmer conditions or a cosy greenhouse.