Do-Si-Dos Seeds
GSC Lineage, OG Power, 30% THC Ceiling
Do-Si-Dos seeds deliver one of the most potent hybrid genetics available today, combining GSC and Face Off OG into a strain that regularly tests between 20-30% THC. That lineage pairing is not a coincidence; GSC brings the sweet, earthy complexity while Face Off OG anchors the body effect with serious OG weight. If you are shopping for Do-Si-Dos seeds for sale, you are looking at a strain with 400-500g/m² indoor yields and an 8-9 week flowering window that rewards moderately experienced growers with dense, resin-coated harvests.
Do-Si-Dos Seed Types: Feminized vs. Regular vs. Autoflower
| Seed Type | Flowering Time | Yield | Best For |
|---|---|---|---|
| Feminized | 8-9 weeks | 400-500g/m² / 500-600g/plant | Growers maximizing canopy efficiency and yield consistency |
| Regular | 8-9 weeks | 400-500g/m² (females) | Breeders preserving or crossing Do-Si-Dos genetics |
| Autoflower | 8-10 weeks from seed | 350-450g/m² | Growers in short seasons or running perpetual harvests |
Choosing Between Feminized and Regular
Feminized Do-Si-Dos seeds are the dominant format across most seedbanks carrying this strain, and for good reason. The GSC x Face Off OG cross produces phenotypes that vary noticeably in structure and resin output, so eliminating males from the equation lets you run more plants and select the best female expressions without wasting space. Regular seeds from MSNL are the only option if you are working on a breeding project, particularly if you want to cross the Face Off OG terpene profile into another line.
When Autoflower Makes Sense for Do-Si-Dos
Royal Queen Seeds carries the autoflower version, which completes its cycle in 8-10 weeks from seed regardless of light schedule. The trade-off is a modest yield reduction compared to the photoperiod feminized version, but the compressed timeline makes it a practical choice for outdoor growers in northern climates where the photoperiod version's 8-9 week flower window could be cut short by early frosts. The 20-30% THC potential carries over to the auto version, so potency is not the compromise here.
Where to Buy Do-Si-Dos Seeds
Compare prices from verified seedbanks
| Seedbank | Score | Seed Types | Price | |
|---|---|---|---|---|
| MSNL | Regular | From $7.90/seed | View at MSNL → | |
| Crop King Seeds | 7.2/10 | Feminized | From $13.00/seed | View at Crop King Seeds → |
| Royal Queen Seeds | 6.9/10 | Autoflower | From $13.00/seed | View at Royal Queen Seeds → |
| Seedsman | Feminized | From $13.32/seed | View at Seedsman → | |
| Herbies Seeds | Feminized | From $14.42/seed | View at Herbies Seeds → | |
| Homegrown Cannabis Co | Feminized | From $17.50/seed | View at Homegrown Cannabis Co → | |
| ILGM | 7.4/10 | Feminized | From $18.80/seed | View at ILGM → |
Also available at: Seed City
Links go directly to seedbank product pages.
Do-Si-Dos Seed Specs
| Strain Type | Hybrid |
| Lineage | GSC x Face Off OG |
| THC Content | 20-30% |
| CBD Content | 0.1-0.5% |
| Flowering Time | 8-9 weeks |
| Indoor Yield | 400-500g/m² |
| Outdoor Yield | 500-600g/plant |
| Growing Difficulty | Moderate |
| Available Formats | Feminized, Regular, Autoflower |
Do-Si-Dos Seeds: Frequently Asked Questions
What's the difference between Do-Si-Dos Feminized, Regular, and Autoflower seeds?
The feminized version, carried by six of the eight seedbanks stocking this strain, runs an 8-9 week flower cycle and produces 400-500g/m² indoors. Regular seeds from MSNL are the only format suitable for breeding, since they carry both male and female genetics from the GSC x Face Off OG cross. The autoflower from Royal Queen Seeds finishes in 8-10 weeks from seed with no light schedule changes required, making it the practical pick for short outdoor seasons, though yields come in slightly lower than the photoperiod feminized version. For most buyers looking to simply grow and harvest Do-Si-Dos, feminized is the straightforward choice.
What THC level can I expect from Do-Si-Dos seeds?
Do-Si-Dos tests between 20-30% THC depending on phenotype and growing conditions. The Face Off OG side of the lineage is largely responsible for pushing the upper range toward 30%, while the GSC genetics stabilize the resin production across phenotypes. If hitting the upper end of that range matters to you, compare lab test results between seedbanks before purchasing. ILGM (7.4/10) and Crop King Seeds (7.2/10) both have published customer scores for this strain, which gives you some basis for comparing genetic consistency across sources. CBD content stays low at 0.1-0.5%, so this is not a balanced-ratio strain.
Is Do-Si-Dos a good strain for beginner growers?
Do-Si-Dos is rated moderate difficulty, which means it is not the right first-time grow. The GSC x Face Off OG cross produces noticeable phenotype variation, and the plants can be sensitive to environmental swings during the 8-9 week flower period. Beginners who still want to buy Do-Si-Dos seeds would be better served starting with the autoflower version from Royal Queen Seeds, since the fixed 8-10 week seed-to-harvest timeline removes the light schedule variable. If you are set on feminized, ILGM's germination guarantee (reflected in their 7.4/10 score) provides some insurance against seed failure on a strain that rewards careful environmental management.
Where can I buy Do-Si-Dos seeds online?
Do-Si-Dos seeds are available from eight seedbanks: Seedsman, ILGM, Crop King Seeds, Homegrown Cannabis Co, Herbies Seeds, MSNL, Royal Queen Seeds, and Seed City. Feminized seeds are the most widely available format across six of those eight. MSNL is the only source for regular seeds, and Royal Queen Seeds is the only source for autoflower. Among seedbanks with published review scores, ILGM scores highest at 7.4/10 for their Do-Si-Dos feminized offering. If you want the autoflower format specifically, Royal Queen Seeds is your only option, so check their current pack sizes and pricing before committing.
