Black Widow Seeds
South American Fire, 28% THC, Zero Compromise
Black Widow is a potency-forward hybrid built on South American and South Indian Sativa genetics, delivering THC levels that range from 15% to a ceiling of 28% depending on phenotype and grow conditions. That wide THC band means buyers should pay close attention to which seedbank sources their stock from verified breeders, since phenotype consistency varies significantly across the five retailers carrying this strain. With indoor yields hitting 400-500g/m² and outdoor plants pushing 500-600g per plant over an 8-9 week flower, Black Widow is one of the more productive sativa-leaning hybrids available in both Regular and Feminized formats.
| Seed Type | Flowering Time | Yield | Best For |
|---|---|---|---|
| Regular | 8-9 weeks | 400-500g/m² (indoor) / 500-600g/plant (outdoor) | Breeders, phenotype hunters, outdoor growers preserving genetics |
| Feminized | 8-9 weeks | 400-500g/m² (indoor) / 500-600g/plant (outdoor) | Yield-focused growers, indoor cultivators, medical users verifying CBD content |
Black Widow Regular seeds are only available through Seedsman, making that retailer the sole option for breeders looking to work with the South American and South Indian Sativa lineage for phenotype selection or breeding projects. Regular seeds from this cross can throw a range of phenotypes, which is actually an asset for anyone hunting the upper end of that 15-28% THC range across multiple plants.
Feminized Black Widow seeds are carried by four seedbanks: ILGM, Crop King Seeds, Herbies Seeds, and Seed City. For indoor growers focused on maximizing that 400-500g/m² yield target, feminized is the practical choice. Medical buyers verifying the 0.1-0.5% CBD content should note that CBD certification varies by seedbank, so requesting lab documentation before ordering is worth doing specifically with this strain given its sativa-dominant lineage and phenotype variability.
Where to Buy Black Widow Seeds
Compare prices from verified seedbanks
| Seedbank | Score | Seed Types | Price | |
|---|---|---|---|---|
| Crop King Seeds | 7.2/10 | Feminized | From $13.00/seed | View at Crop King Seeds → |
| ILGM | 7.4/10 | Feminized | From $14.80/seed | View at ILGM → |
| Seed City | Feminized | From $18.37/seed | View at Seed City → | |
| Herbies Seeds | Feminized | From $18.82/seed | View at Herbies Seeds → |
Also available at: Seedsman
Links go directly to seedbank product pages.
| Attribute | Value |
|---|---|
| Strain Type | Hybrid |
| Lineage | South American x South Indian Sativa |
| THC Content | 15-28% |
| 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 Seed Types | Regular, Feminized |
Black Widow Seeds FAQ
What's the difference between Black Widow Regular and Feminized seeds?
Black Widow Regular seeds are exclusively available through Seedsman and are the right choice for breeders working with the South American and South Indian Sativa lineage who want to select across a range of male and female phenotypes. The 15-28% THC range in this strain means phenotype hunting across Regular seeds can yield plants that hit significantly different potency levels, which is valuable for selective breeding. Feminized Black Widow seeds, available from ILGM, Crop King Seeds, Herbies Seeds, and Seed City, are the better fit for growers focused on hitting that 400-500g/m² indoor yield target without running multiple plant selections.
What THC level can I expect from Black Widow seeds?
Black Widow seeds carry a verified THC range of 15-28%, which is one of the wider potency bands among hybrid strains in this category. The lower end of 15% reflects less favorable phenotypes or suboptimal growing conditions, while the 28% ceiling is achievable from top-performing phenotypes under dialed-in conditions. Buyers focused on high-end potency should compare lab test documentation across the five seedbanks carrying this strain, since phenotype consistency at the upper THC range varies between Seedsman's Regular stock and the feminized offerings from ILGM and Crop King Seeds.
Is Black Widow a good strain for beginner growers?
Black Widow is rated Moderate difficulty, which places it above entry-level strains like Northern Lights or Blue Dream but well below demanding sativa-dominant crosses that require precise environmental control. The sativa lineage from South America and South India means the plants can stretch during flower, requiring some canopy management. For buyers who are newer to growing and want to buy Black Widow seeds, choosing feminized from ILGM (7.4/10 customer score) with their documented germination guarantee reduces the risk associated with the Moderate difficulty rating compared to starting with Regular seeds from Seedsman.
Where can I buy Black Widow seeds online?
You can buy Black Widow feminized seeds online from ILGM, Crop King Seeds, Herbies Seeds, and Seed City. If you specifically need Regular seeds, Seedsman is the only stockist. ILGM holds the highest customer review score among the five at 7.4/10 for this strain, and Crop King Seeds follows at 7.2/10. For buyers outside North America, Herbies Seeds and Seed City offer international shipping options that may be more practical depending on your location. All five retailers carry verified Black Widow genetics, but pack size options and pricing differ, so comparing before ordering is worthwhile given the five-source availability.
