The Leaf Index
Vol. IA field guide to cannabis cultivarsleafly.cc
No. 6450Hybrid

Simple Jack

Jack Herer × Unknown Indica Hybrid

Simple Jack is a sativa-leaning hybrid cultivar that often draws comparisons to the famed Jack Herer. It is recognized for its bright, invigorating aroma and energetic effects, making it a popular choice for daytime use. While its exact lineage can vary due to breeder selection, it generally offers a consistent and uplifting experience.

EffectsEnergetic Uplifting Stimulating
AromaCitrusPineFloralSweetPepperyHerbalLemonOrange

Appearance

Simple Jack flowers typically present as medium to large, elongated spear shapes with well-developed calyxes and moderate density. The buds are often lime to forest green, accented by vibrant orange pistils that may deepen to copper as the plant matures. A coating of glandular trichomes gives the flowers a frosty, silvery appearance and a sticky texture when properly cured.

As is common with sativa-leaning hybrids, some buds may exhibit slightly open bracts, particularly in warmer growing conditions. This characteristic can promote airflow, but careful trimming is often needed for a refined finish. Under cooler temperatures late in the flowering cycle, some varieties may display subtle lime or olive hues.

Aroma & Flavor

The aroma of Simple Jack is characterized by a bright top note of pine resin and citrus peel, often accompanied by a sweet, floral layer. A subtle peppery and herbal undertone, hinting at beta-caryophyllene, adds complexity. When freshly ground, the scent is often described as clean and invigorating, with a noticeable freshness.

On the palate, Simple Jack typically delivers flavors of fresh pine, lemon-lime zest, and a clean herbal note reminiscent of green tea. The inhale is crisp and aromatic, while the exhale can leave a slightly peppery and woody finish. The flavor is known for its persistence, often lingering for a considerable time after consumption.

Effects

Simple Jack is predominantly known for its energetic and clear-headed effects. It provides an uplifting experience that is well-suited for daytime activities. Consumers often report feeling invigorated and mentally stimulated without the heavy sedation sometimes associated with other hybrids.

Terpenes & Cannabinoids

This strain typically exhibits moderate to high THC levels, ranging from 18-28%, with minimal CBD content (<1%). The terpene profile is often dominated by terpinolene and limonene, contributing to its signature citrus and pine notes. Other terpenes like caryophyllene and ocimene may also be present, adding floral, peppery, and herbal dimensions.

Growing

Simple Jack is generally described as a moderately tall plant with an upright growth habit and narrow leaves, traits often seen in its Jack Herer heritage. It tends to stretch significantly after the transition to flowering. Growers note that topping and trellising can help manage its height and create a more uniform canopy for optimal light exposure.

The plant typically produces elongated, spear-shaped colas. While generally resilient, growers may observe mild foxtailing under high-intensity lighting and elevated temperatures late in the flowering period. Phenotype stability can vary depending on the source, with verified cuttings from reputable nurseries recommended for consistent results.

Origins & Lineage

Simple Jack is considered a modern cultivar with a lineage that strongly favors Jack Herer. It is frequently described as a cross between Jack Herer and an unspecified indica-leaning hybrid. Some anecdotal reports suggest crosses with Skunk or Haze genetics, aligning with the classic heritage of Jack Herer itself.

The strain emerged in the mid-to-late 2010s, particularly on the U.S. West Coast, during a period of renewed interest in uplifting, terpinolene-forward daytime cultivars. Its popularity grew as it offered a more straightforward expression of the Jack Herer profile, fitting a niche for sativa-leaning hybrids with modern potency.

Frequently asked questions

What is the THC content of Simple Jack?
Simple Jack typically has a THC content ranging from 18% to 28%.
What are the dominant terpenes in Simple Jack?
The dominant terpenes are often terpinolene and limonene, contributing to its citrus and pine aroma.
Is Simple Jack a sativa or indica?
Simple Jack is generally classified as a sativa-leaning hybrid.
What are the typical effects of Simple Jack?
Users commonly report energetic, uplifting, and clear-headed effects, making it suitable for daytime use.