Subcool Seeds Jack the Ripper F3

Strain Overview

Jack the Ripper F3 Regular Cannabis Seeds by Subcool Seeds represent the next evolution of one of the most legendary citrus-heavy Sativa hybrids in modern cannabis breeding. Reconstructed as a preservation project after Subcool’s passing, Jack the Ripper F3 seeds were created to honor the original vision of this iconic strain — stabilizing its sharp lemon-cleaner aroma, crystal-coated resin production, and vigorous growth pattern. These seeds deliver the classic Jack the Ripper experience in a more uniform, grower-friendly form that captures the essence of Subcool’s pioneering genetics.

Genetics and Lineage

The genetic foundation of Jack the Ripper F3 seeds is built upon Jack’s Cleaner and Space Queen, the same cross that defined the original. For this generation, preserved Jack the Ripper F2 stock from Irie Genetics was paired with another JTR F2 selection to ensure genetic consistency and long-term preservation. This approach allowed the breeders at Subcool Seeds to strengthen key characteristics such as structural stability, terpene expression, and resin coverage. The result is a 70/30 Sativa-leaning hybrid that perfectly balances its parent strains while remaining unmistakably true to Subcool’s vision.

Appearance and Growth Characteristics

Jack the Ripper F3 plants exhibit a classic Christmas tree structure with a sturdy central cola and strong lateral branches. Growth is medium to tall, with consistent internodal spacing and impressive stacking as flowering progresses. Dense colas develop heavy resin coverage, giving the buds a glassy, frosted appearance that reflects the strain’s powerful trichome production. Growers can expect above-average yields for a Sativa-dominant hybrid, as the colas swell late in flower and may require support to prevent branch sagging. Jack the Ripper F3 seeds thrive both indoors and outdoors, showing exceptional vigor and uniformity across phenotypes.

Flowering Time and Cultivation

The flowering period for Jack the Ripper F3 seeds typically lasts between 9 and 10 weeks. Indoors, the strain performs best under strong lighting conditions with early topping and training to manage canopy height. It responds well to controlled environments and benefits from low-stress training or netting to maintain even light distribution. Outdoors, it flourishes in warm, sunny climates where its full potential can be realized. Subcool Seeds recommends early training to optimize yield, as the plant naturally develops into a tall, wide structure with dense, stacked colas that ripen quickly toward harvest.

Flavor and Aroma Profile

Jack the Ripper F3 seeds produce plants with a remarkably sharp and vibrant lemon aroma that defines this legendary line. The dominant terpene profile blends lemon-cleaner brightness with underlying notes of citrus rind, hash, and subtle spice. Some phenotypes display a faint fuel undertone that adds depth to the overall scent. When cultivated and cured properly, the buds release an unmistakable mix of lemon zest and earthy hash that fills the room instantly. The flavor is equally striking — bright lemon upfront, followed by a deep, hashy citrus exhale with faint hints of pine and spice that linger on the palate.

Breeder Information

Subcool Seeds has long been recognized for its groundbreaking contributions to modern cannabis breeding, and Jack the Ripper F3 seeds continue that legacy with precision and respect for the original line. After Subcool’s passing, this project was developed as a faithful preservation effort, incorporating Irie Genetics’ safeguarded Jack the Ripper F2 material to ensure authenticity and continuity. The result is a stabilized, resin-heavy hybrid that maintains the unmistakable lemon-cleaner aroma and vigorous growth pattern that made Jack the Ripper a household name among cultivators and connoisseurs worldwide.