The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 7912Sativa

Jack Herer F2

Haze × Northern Lights #5 × Skunk

Jack Herer F2 is a sativa-dominant strain that continues the legacy of its legendary predecessor. This second filial generation offers breeders and consumers a chance to explore a wider range of phenotypes from the original Jack Herer genetics. It is celebrated for its uplifting and clear-headed effects, making it a popular choice for daytime use.

EffectsCerebral Uplifting Energizing Motivating
May help withStress Lack of appetite Pain Depression Headaches
AromaCitrusFloralHerbalLemonOrangePineSweet

Appearance

Jack Herer F2 plants typically grow to medium-tall heights with a sativa-like structure, exhibiting strong apical dominance. They possess moderately spaced internodes and spear-shaped, somewhat narrow leaves, indicative of Haze genetics. The flowers often develop elongated colas with a high calyx-to-leaf ratio and can be generously covered in trichomes, sometimes showing slight foxtailing under intense conditions. Coloration usually ranges from lime to forest green, with occasional anthocyanin development in cooler temperatures.

Aroma & Flavor

This strain is recognized for its classic terpene profile, often featuring notes of pine and citrus. Depending on the phenotype, consumers may experience a bouquet that includes floral, sweet, and herbal undertones. The flavor often mirrors the aroma, offering a complex profile that can range from lemony and orange-like to a more pronounced pine essence.

Effects

Jack Herer F2 is primarily known for its cerebral and uplifting effects, promoting a clear-headed experience. It is often described as energizing and motivating, making it suitable for creative pursuits or daytime activities. Users typically report feeling productive and focused without significant sedation.

Terpenes & Cannabinoids

Cannabinoid content in Jack Herer F2 commonly falls between 17-24% THC, with CBD levels below 1%. Minor cannabinoids like CBG may be present in small percentages. The terpene profile is diverse, with phenotypes often expressing dominant notes of terpinolene, myrcene, and limonene, alongside pinene and caryophyllene. This contributes to its characteristic aroma and effects.

Growing

Cultivating Jack Herer F2 requires careful selection due to the genetic diversity within the F2 generation. Plants generally exhibit sativa-leaning growth patterns. While specific yield and flowering times can vary significantly between phenotypes, growers can expect a treasure hunt for standout plants. Modern cultivation techniques can refine the expression of its classic traits.

Origins & Lineage

Jack Herer F2 is a second filial generation derived from the original Jack Herer strain, created by Sensi Seeds in the mid-1990s. The original is widely believed to be a cross involving Haze, Northern Lights #5, and a Skunk lineage. The F2 generation is produced by crossing two F1 Jack Herer plants or stable F1 parents, leading to increased genetic recombination and a broader spectrum of potential phenotypes.

Frequently asked questions

What is the THC content of Jack Herer F2?
Jack Herer F2 typically tests between 17-24% THC.
What are the dominant terpenes in Jack Herer F2?
Common dominant terpenes include terpinolene, myrcene, and limonene, contributing to its pine and citrus aroma.
What effects can I expect from Jack Herer F2?
Users often report cerebral, creative, uplifting, and energizing effects, making it suitable for daytime use.
What is the difference between Jack Herer F1 and F2?
F2 generations offer greater genetic diversity and a wider range of phenotypes compared to the more uniform F1 generation.