Jack the Ripper F2
Also known as: JTR F2
Jack the Ripper F2 Strain Overview
Jack the Ripper F2 is a second-generation hybrid cannabis strain created by Irie Genetics as a tribute to the late breeder Subcool. As a second-generation cross, it is bred from the original Jack the Ripper strain, which itself is a combination of Jack Herer and Space Queen. More specifically, the original Jack the Ripper was created by crossing a Jack's Cleaner clone with a vigorous Space Queen male known as Space Dude. The F2 generation was produced through selective breeding where Irie Genetics chose a Jack the Ripper male with beautiful structure and great flower clusters with purple colors, then pollinated multiple Jack the Ripper females. This mostly sativa strain can be cultivated both indoors and outdoors with a flowering time of approximately 70 days. The breeder has released multiple phenotypes including #2, #4, and #5, each with distinct characteristics ranging from tall potent plants to more manageable commercial varieties.
Jack the Ripper F2 Strain Effects
Jack the Ripper F2 Strain Positive Effects
- Users report relief from depression
- May help with anxiety
- Often used for stress management
- Users report pain relief
- May help with fatigue
This is not medical advice. Consult a healthcare professional.
Jack the Ripper F2 Strain Possible Negative Effects
Jack the Ripper F2 Strain Growing Information
For a sativa-dominant hybrid, Jack the Ripper F2 #2 flowers fast at 60 to 70 days with moderate difficulty, meaning eager beginners can still succeed if they're detail-oriented. The #2 phenotype produces tall and skinny plants with thinner leaves that double or triple in size through flower, while the #4 phenotype has a more classic Christmas tree structure and doubles in size before finishing. Cultivation requires adequate airflow, humidity control, and full-spectrum lighting with ample vertical headspace due to stretching. The strain performs well indoors or outdoors but benefits from topping, LST, or SCROG for maximum yield, and requires support stakes during flowering. The #2 phenotype has longer flowering than other JTR phenotypes and can be challenging for beginner growers, while the #4 phenotype finishes more quickly and is more forgiving to mistakes, making it suitable for new growers. Outdoor harvest timing is around early October, and while the plant doesn't require extensive care, growers should watch for mold development during the growing cycle.
Jack the Ripper F2 Strain Genetics
Jack the Ripper F2 Strain Parent Strains
Frequently Asked Questions
How does Jack the Ripper F2 make you feel?
Jack the Ripper F2 is known to produce the following effects:
- Energetic: 85%
- Euphoric: 80%
- Uplifted: 80%
- Creative: 75%
- Focused: 70%
- Psychedelic: 60%
What are the positive effects of Jack the Ripper F2?
Jack the Ripper F2 has these reported positive effects:
- Users report relief from depression
- May help with anxiety
- Often used for stress management
- Users report pain relief
- May help with fatigue
This is not medical advice. Consult a healthcare professional.
What are the negative effects of Jack the Ripper F2?
Possible negative effects include:
- Dry Mouth
- Dry Eyes
- Anxiety
- Paranoia
- Dry mouth
- Dry eyes
- Possible anxiety in high doses
- Potential paranoia
- May cause dizziness
What does Jack the Ripper F2 taste like?
Jack the Ripper F2 has the following flavor profile:
- Citrus
- Gas
- Lemon
- Lime
- Pine
- Skunk
- Spicy