Jack the Ripper F2
Also known as: JTR F2
What is the Jack the Ripper F2 strain?
Jack the Ripper F2 is a hybrid cannabis strain with up to 25.0% THC, known for its energetic effects and citrus and diesel flavor profile.
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.
What are the effects of Jack the Ripper F2?
What are the medical benefits of Jack the Ripper F2?
- 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 side effects of Jack the Ripper F2?
- 💧 Dry Mouth
- 👁️ Dry Eyes
- 😰 Anxiety
- 😨 Paranoia
- Dry mouth
- Dry eyes
- Possible anxiety in high doses
- Potential paranoia
- May cause dizziness
How do you grow Jack the Ripper F2?
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.
How should you use Jack the Ripper F2?
Jack the Ripper F2 is a hybrid strain with 25.0% THC, which is considered high potency. As a hybrid, it offers versatility for both daytime and evening use.
Beginners
Start with 1-2 small inhalations or 2.5-5mg if using edibles. Wait 15 minutes before taking more. This strain is potent — start very low.
Regular Users
A standard session of 3-5 inhalations or 5-15mg edible dose. Effects typically onset within 5-15 minutes when inhaled, 30-90 minutes for edibles.
Experienced Users
Adjust to personal tolerance. At 25.0% THC, even experienced users should respect this strain's potency.
Start low and go slow. This is not medical advice — consult a healthcare professional before using cannabis.
What is the genetic lineage of Jack the Ripper F2?
What are Jack the Ripper F2's parent strains?
Frequently Asked Questions
How does Jack the Ripper F2 make you feel?
Jack the Ripper F2 is a hybrid strain that primarily produces energetic effects, followed by euphoric. Users report the dominant effect at 85% intensity. With 25.0% THC, this strain is considered potent and best suited for experienced users.
Is Jack the Ripper F2 good for medical use?
Jack the Ripper F2 has been reported by users for users report relief from depression, may help with anxiety, often used for stress management, users report pain relief, may help with fatigue. As a hybrid, it offers a balanced profile that may work throughout the day.
This is not medical advice. Consult a healthcare professional.
Are there side effects with Jack the Ripper F2?
Some users have reported dry mouth, dry eyes, anxiety, paranoia, dry mouth, dry eyes, possible anxiety in high doses, potential paranoia, may cause dizziness when using Jack the Ripper F2. Starting with a low dose and staying hydrated can help minimize these effects.
What does Jack the Ripper F2 taste and smell like?
Jack the Ripper F2 features a flavor profile of citrus, diesel, lemon, lime, pine, skunk, spicy. The dominant terpenes are Caryophyllene and Pinene, which contribute to its distinctive aroma.
What do users say about Jack the Ripper F2?
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What does the research say about Jack the Ripper F2?
Jack the Ripper F2 is a hybrid cannabis strain containing up to 25.0% THC, with a terpene profile dominated by Caryophyllene and Pinene. Below are authoritative resources for understanding the compounds in this strain.
Cannabinoid Information
Cannabis Regulations & Safety
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