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Serious Seeds: Legendary Dutch Seedbanks
Discover the legendary Dutch Seedbanks Serious Seeds which has stood for 100% quality, scientific breeding work and exceptionally stable genetics since the 1990s. Behind the brand is Simon, an Amsterdam-trained biologist who discovered the benefits of pure, unadulterated cannabis without tobacco during a trip to Africa and began collecting special seeds. Back in Holland, he devoted himself to growing and crossing his best plants. This resulted in a small, highly stable selection of varieties that discerning growers have relied on for decades.
✓ All Buy cannabis seeds from Serious Seeds order now in our seed store.
AK-47
| Gender | Feminized | ||
| Crossbreeding | Colombian x Mexican x Thai x Afghan | ||
| Variety | Sativa dominant | ||
| Cultivation | Indoor, Outdoor | ||
| Flowering time indoor | 8–9 weeks | ||
| Flowering time outdoor | until end of October | ||
| Outdoor yield | high | ||
| Indoor yield | 350–600 g/m² | ||
| Harvest time | mid to end of October | ||
| THC | 21.5% | ||
| CBD | 1% | ||
| Effect | Strong, long-lasting, physical & mental | ||
| Taste & Aroma | Spicy, sweet, citrus | ||
| Characteristics | Easy to grow, large compact flowers, high flower/leaf ratio | ||
| Effect | Relaxing, euphoric, one-hit wonder |
AK-47 Auto
| Gender | Feminized | ||
| Variety | Hybrid, Ruderalis | ||
| Cultivation | Indoor, Outdoor | ||
| Flowering time | 70–80 days from seedling to harvest | ||
| Indoor yield | 40–75 g/plant | ||
| Indoor height | 75–100 cm | ||
| Outdoor height | 75–100 cm | ||
| THC | Very high | ||
| CBD | Low | ||
| Effect | Strong, long-lasting | ||
| Taste & Aroma | Sweet, fruity, lemony, spicy | ||
| Characteristics | Crystal-covered buds, compact | ||
| Effect | Chronic pain, anxiety, mood enhancer |
Auto White Russian
| Gender | Feminized | ||
| Hybridization | White Widow x Ruderalis | ||
| Variety | Sativa, Indica Dominant, Ruderalis | ||
| Cultivation | Outdoor, Indoor, Glasshouse | ||
| Flowering time - Harvest | 70 - 80 weeks from germination to harvest | ||
| Outdoor Yield | 25 - 80 g per plant | ||
| Indoor Yield | 400 - 450 g/m2 | ||
| Height | 70 - 90 cm |
Bubble Gum (Serious Seeds)
| Gender | Feminized | ||
| Variety | Sativa, Indica | ||
| Cultivation | Outdoor, Indoor, Greenhouse | ||
| Flowering | 56 - 63 days | ||
| Indoor yield | 300 - 450 g/m2 | ||
| Harvest time | October 15 - 31 | ||
| Flavor & Aroma | Legendary for its sweet smell | ||
| Effect | Euphoric High |
CBD Enriched Warlock
| Gender | Feminized | ||
| Hybridization | Warlock x Cannatonic | ||
| Variety | Sativa, Indica Dominant | ||
| Cultivation | Outdoor, Indoor, Glasshouse | ||
| Flowering time | 55 - 60 days | ||
| Outdoor Yield | 1000 g per plant | ||
| Indoor Yield | 400 - 500 g/m2 | ||
| Harvest time | September | ||
| THC | 4% | ||
| CBD | 4% | ||
| CBD/THC: | 1:1 |
CBD-Chronic
| Gender | Feminized | ||
| Crossbreeding | Chronic x Remedy CBD | ||
| strain | Sativa, Indica | ||
| Cultivation | Outdoor, indoor, greenhouse | ||
| Flowering time indoor | 56 - 63 days | ||
| Outdoor yield | 800 g per plant | ||
| Indoor yield | 350 - 600 g/m2 | ||
| Harvest time | October | ||
| THC | 5.8% | ||
| CBD | 5.4% | ||
| CBD:THC | 1:1 |
Why choose this breeder?
This Dutch seedbank has followed the principle of “quality over quantity” from the very beginning. Instead of releasing dozens of new names every year, a deliberately small range of around twenty strains is selected and stabilized over years. The lines are bred to produce homogeneous, easy-to-control plants – ideal if you value reliable results and harvests you can plan easily. Production takes place in small batches, which are tested for germination rate and uniformity before release, so you start out working with as uniform a stock as possible.
Genetics with history and a scientific approach
The responsible breeder brings his biological training directly into the breeding work. Since the 1980s, he has been collecting genetics from various regions of the world and refining them step by step. These collections have produced hybrids that are known for clearly defined growth structures, intense aromas and a powerful, well-balanced spectrum of effects. Independent laboratory tests have confirmed the strains of this brand for many years to have high active ingredient values and reproducible profiles – an important factor if you want to plan your projects precisely.
Awards, Magus genetics and full transparency
The list of prizes this seedbank has won over the decades is impressive: numerous trophies at international competitions and cups underline its reputation as a reliable supplier of top-class genetics. An important chapter in the story is the integration of the small, iconic Magus Genetics brand. Charismatic strains like Warlock, Double Dutch, Exile, Biddy Early and Biddy Sister were added to the range and continued according to the same strict quality criteria. So today you benefit from a combination of proven classics and selected specialist strains all under one roof.
- Deliberately small range with carefully selected strains instead of an overloaded catalog
- Stable, homogeneous genetics – suitable for beginners and experienced growers
- Small, fresh production batches with hand-selection and germination testing
- Independent lab tests with high active ingredient values and distinct profiles
- Individually numbered packaging and transparent traceability of every pack
Your advantages at Mr. Hanf
In the online shop at Mr. Hanf you’ll find a carefully selected range of these premium breeding lines – from high-yielding hybrids to aroma-intensive classics and robust outdoor strains. Thanks to clear descriptions, fair prices and discreet, reliable processing you can easily compare and pick the genetics that match your setup. This way, you combine the decades of experience of a Dutch seedbank from the 90s with the service of a specialist retailer and lay the groundwork for your next successful grow project.
Awards as Best Seedbank and Seeds
3rd prize - High Times Cannabis Cup, Category: Seeds Cup, (Cerebral Seeds, predecessor of Serious Seeds) 1994
2nd prize - High Times Cannabis Cup, Category: Seeds Cup, 1995
3rd prize - High Times Cannabis Cup, Category: Seeds Cup, 1996
1st prize - Expogrow Cup, Category: Best Seedbank 2016
Frequently Asked Questions (FAQ)
- What makes Serious Seeds special?
- Since the 1990s, Serious Seeds has represented 100% quality over quantity. The Dutch seedbank focuses on a deliberately small range of about twenty carefully selected strains, stabilized over years. All seeds are produced in small batches and are tested for germination rate and uniformity before release. The packaging is individually numbered to allow transparent traceability of each pack.
- What strains does Serious Seeds offer?
- Serious Seeds offers a selection of about twenty stable strains, including high-yielding hybrids, aroma-intensive classics and robust outdoor strains. Additionally, the iconic strains of the Magus Genetics brand – Warlock, Double Dutch, Exile, Biddy Early and Biddy Sister – have been integrated into the line and are further bred to the same strict quality standards.
- Are Serious Seeds suitable for beginners?
- Yes, Serious Seeds are suitable both for beginners and experienced growers. The lines are bred for homogeneous, easy-to-control plants that give reliable results and harvests you can plan for. The stable genetics and high germination rates make them an ideal choice for newcomers.
- What awards has Serious Seeds won?
- Over the decades, Serious Seeds has won numerous prizes at international competitions. These include 3rd prize at the High Times Cannabis Cup in 1994 (as Cerebral Seeds), 2nd prize in 1995, 3rd prize in 1996 in the Seeds Cup category, and 1st prize as Best Seedbank at the Expogrow Cup 2016. These awards underscore its reputation as a reliable supplier of top-class genetics.
