Jack's Critical Autoflower Feminized Cannabis Seeds

Genetics & strain profile

Jack’s Critical Autoflower is a feminized autoflowering strain bred by Quebec Cannabis Seeds. It comes from Jack Herer and Critical Mass, crossed with Ruderalis to make it an autoflower. It has 20% THC and 8% CBD, and the page describes it as easy to grow and highly productive, for novice and experienced growers alike. It carries our beginner-friendly and compact, balcony-friendly badges.

It has no reviews yet, so what you read here comes from the breeder’s description and not from customer grows, and we will not claim results beyond that. Autoflowers are forgiving, but forgiving is not the same as maintenance-free: water and feed with care and check the plants regularly. Our seeds are guaranteed, so if a seed does not come up, contact us.

How Jack’s Critical Autoflower grows

Because it is an autoflower, it flowers on its own schedule without a change in light hours, so you can run the same long-day lighting from start to finish. It flowers in 60 to 70 days. The plant stays compact, which suits indoor spaces of all sizes. It gives up to 500 g/m² indoors; the page gives no outdoor figure.

Sow directly into the final pot, because autoflowers dislike being transplanted, and keep the medium damp but not soaked at about 22 to 25 °C until the seedling breaks the surface. Keep the room steady, with consistent temperature and humidity, because stress can slow an autoflower and cut the yield. Water gently, feed lightly and harvest by the trichomes rather than by the calendar. Outdoors, sow after the last frost so the plant has the whole warm season. Yields are best cases under good conditions, not promises. Check your local rules before you plant.

Taste, aroma and effect

Citrus, pungent and skunky, with a strong diesel note on the inhale. The effect begins with a wave of euphoria that lifts the mood; the Critical Mass side adds relaxation, and the CBD softens the high. At 20% THC, newer consumers should start with a small amount, since effects vary from person to person. Any flowering cannabis gives off a smell, so plan for odour control indoors. For related autoflowers, see OG Jack Autoflower, Jack Afghan Autoflower and Northern OG Autoflower.