Quebec Blast Cannabis Seeds Feminized 

Genetics & strain profile

Quebec Blast is one of our own strains, bred here in Quebec for short northern seasons: mostly indica, 24% THC and less than 1% CBD, with feminized seeds that give consistent plants. It carries our mould tolerant badge, has five grower diaries on GrowDiaries, and 18 reviews average 4.9 out of 5. Growers describe a vigorous, trouble-free plant: “very fast and vigorous grower with no issues”, “very resistant to mildew and rot”, and one Quebec grower says it was the only strain that survived an overly hot summer in his tent. Another found two very different plants from two seeds — one short and topped to ten even tops with bright red, golf-ball buds, her sister much taller — so expect some variation in height and colour. The one reservation comes from a grower who found it very piney and a little harsh, and missed the sweet finish others describe; he still gave it 5 stars for the yield. Our seeds are guaranteed.

How Quebec Blast grows

Indoors it reaches a medium height, compact and fairly leafy with an indica structure, and flowers in about 9 weeks with 300 g/m² or more; it is easy to clone and one grower had dense, rock-hard buds at 57 days. Outdoors it is a different animal: an untopped freebie seed in an 8-gallon pot grew into a 5-foot Christmas tree, and plants in 15- and 20-gallon pots of Pro-Mix reached 7 feet, “very frosty, stinky and sticky”, with about half a pound per plant — up to 500 g in good conditions. Those tall plants needed support, because wind broke branches on one grower’s plants in October, so stake or cage them. Harvest is typically mid-October, which suits southern Quebec, Ontario, the Maritimes and coastal BC; it tolerates common pests and mould well, though no strain is immune, and it handled heat better than anything else in one grower’s tent.

Taste, aroma and effect

Fresh pine first, then spicy, peppery herbal notes and a sweet finish — a Quebec grower calls the terpenes out of the ordinary, “spruce, pepper, spice”, and says the smell was modest in flower but exploded during curing. One reviewer found it mostly pine and a little harsh without the sweetness, so the finish can vary by phenotype. The effect is euphoric and clear-headed at the start, then relaxing and introspective: “an excellent indica buzz that does not put you to sleep”. At 24% THC it is strong, so start small. For other strains bred here, see Quebec Gold 2.0, Quebec Black Bud and Quebec Super Skunk; for another mould-tolerant indica, Critical Magic.

Grown in Canada: what growers reported

From public grow diaries written by the growers themselves, not by us. Full analysis: what 400+ grower reports told us.

• Northern Canada, outdoors: 118 g dry after the plant was hit by hail on 7 September.

Individual results, not averages or promises. How we set our numbers.