A sativa-leaning hybrid bred from Black Domina x Jack Herer.

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Black Jack Feminized Seeds

Q: What THC level should I expect?

Plan for 18 to 24 percent THC in a finished dry sample.

Q: How long is flowering?

Flowering takes eight to ten weeks under 12/12 lighting.

Q: How do I train Black Jack for higher yield?

Use topping at week three, low-stress training during stretch, and a short SCROG to keep the canopy even.

Q: What nutrient schedule works best?

Higher nitrogen in veg. Switch to higher phosphorus and potassium in bloom. Reduce nitrogen after week four of flowering.

Q: When should I harvest?

Harvest when trichomes are mostly cloudy with 20 to 30 percent amber for balanced effect.

Q: How does Black Jack handle pests?

Maintain cleanliness and monitor daily. Use neem or biological controls at first sign of infestation.

Q: What is the typical yield indoors?

Expect around 350 to 500 grams per square meter under good light and ventilation.

Q: Is Black Jack suitable for beginners?

This strain fits intermediate growers. You need basic training and attention to humidity and nutrients.

Q: What curing approach works best?

Dry slowly for seven to ten days. Cure in glass jars, burp daily for two weeks, then weekly for at least four weeks.

Black Jack Feminized Seeds by Captain Seeds - Sativa-dominant hybrid with clear energy, pine spice flavor, and solid yields.

Sharp focus effect
Earthy pine flavor
Reliable indoor yield

Black Jack offers a clear-headed, focused high with mild body relaxation. You get earthy pine and spicy citrus notes. Flowering runs eight to ten weeks indoors. Use topping and low-stress training to maximize the canopy. Feed higher nitrogen in veg and boost phosphorus and potassium in bloom. Harvest when trichomes reach mostly cloudy with 20 to 30 percent amber. Cure slowly for best aroma and smooth smoke.

Black Jack Feminized Seeds Quick Facts

All the essential strain details at a glance for growers and users.

Property	Value	Description
Type	Hybrid (Sativa-dominant)	Black Jack is a sativa-dominant hybrid.
THC Content	18-24%	THC runs high, typically between 18 and 24 percent.
CBD Content	0.2-0.8%	CBD stays low, around 0.2 to 0.8 percent.
Grow Difficulty	Moderate	Growing demands moderate skill and attention to training.
Flowering Time	8-10	Flowering takes eight to ten weeks indoors.
Yield	Medium to high (350-500 g/m2 indoor; 400-600 g/plant outdoor)	Expect medium to high yields with proper feeding and light.
Height	Medium (80-140 cm indoor; 1.5-2.5 m outdoor)	Plants stay medium in size indoors and can reach 2 meters outdoors.
Environment	Indoor and outdoor	You can grow Black Jack indoors or outdoors in temperate zones.
Effects	Clear-headed euphoria, Focused energy, Mild body relaxation	Expect clear-headed euphoria, steady focus, and mild body relaxation.
Flavor Profile	Earthy, Pine, Spicy citrus	Flavors lean earthy with pine and a spicy citrus top note.
Genetics	Black Domina x Jack Herer	Genetics read Black Domina x Jack Herer.
Seed Type	Feminized Seeds	Seeds are sold feminized for stable female crops.
Climate	Temperate, Mediterranean	Black Jack performs best in temperate and Mediterranean climates.

Frequently Asked Questions

Answers to Common Questions About Growing Black Jack Cannabis Seeds

What is Black Jack?

What THC level should I expect?

How long is flowering?

How do I train Black Jack for higher yield?

What nutrient schedule works best?

When should I harvest?

How does Black Jack handle pests?

What is the typical yield indoors?

Is Black Jack suitable for beginners?

What curing approach works best?

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