Jack Herer

Jack Herer

Jack Herer, also known as The Jack, Platinum Jack, JH, and Premium Jack, is a renowned cannabis strain with a balanced composition of 55% sativa and 45% indica. This unique blend results in a harmonious mix of cerebral and bodily effects. Believed to be a cross between a Haze hybrid and a Northern Lights #5 and Shiva Skunk hybrid, Jack Herer boasts a THC content ranging from 15% to 24%, coupled with a CBD content of approximately 0.7%-1.0%.

Named in honor of the late Jack Herer, a prominent cannabis rights advocate affectionately known as "The Hemperor" or "The Emperor of Hemp," this strain has gained popularity for its uplifting effects and potential in managing anxiety, depression, and chronic pain.

The strain's aroma, highly valued when properly cured, exhibits a citrus bouquet, while the burning of Jack Herer releases an herbal scent reminiscent of sage. Users often describe the smoke as having an herbal taste, akin to potpourri.

Originating in the Netherlands in the 1990s, Jack Herer has become a staple in the cannabis community globally, earning nine Cannabis Cup titles, including first place for sativa in 1999. Its genetics have been utilized to create various strains, such as Pineapple Jack, Jack's Cleaner, Critical Jack, Jack Skellington, and Jack Flash.

Overview

Cannabinoids

THC: 15%-24%
CBD: 0.7%-1%

Strain Types

Indica: 55%
Sativa: 45%

Terpenes

Beta-Caryophyllene
Limonene
Myrcene
Pinene
Terpinolene
Phellandrene

Flavonoids

While rarely tested for in cannabis plants, Jack Herer's flavor profile suggests the presence of cannflavins, naringin, quercetin, and kaempferol.

Effects

Jack Herers has been reported to have the following side effects:

  • Creativity

  • Energizing

  • Euphoria

  • Focus

The following adverse effects have also been reported:

  • Dry Eye

  • Dry mouth

  • Paranoia

Medical Applications

Medicinally, Jack Herer has been reported to alleviate stress, depression, and anxiety. Dutch pharmacies have even distributed it as a medicinal-grade cannabis. It is recommended for morning use due to its energizing properties, though prolonged use may induce relaxing effects beneficial for sleep.

 
Dosing

Caution is advised, with a recommended dosage below 5 mg THC, especially with edibles or tinctures. If inhaling, start with a few puffs and wait 20 minutes before redosing, increasing in 2.5 mg increments.

Growing

Jack Herer plants have dark green leaves, dark orange pistils, and produce ample trichomes and sticky resin. It is versatile, suitable for both indoor and outdoor cultivation. Resistant to diseases, molds, and pests, it thrives in a Mediterranean-type climate. Silica-based foods are recommended for robust stem growth. Expect a yield of up to 18 ounces per square meter indoors and per plant outdoors.

Height

 Jack Herer plants exhibit a distinctive growth pattern, reaching heights of up to 6.5 feet (2 meters), surpassing many other cannabis strains. This towering stature makes them taller than average, necessitating consideration for indoor cultivation. To manage height, growers often employ a technique known as topping, involving the pruning of the main stem's top to encourage lateral branch growth. This process not only controls height but also promotes a bushier overall plant structure.

Humidity and Temperature

Jack Herer thrives in specific environmental conditions, favoring a growing temperature range between 70 and 80 degrees Fahrenheit (21-27 degrees Celsius). This strain is particularly well-suited to a Mediterranean-type climate. Maintaining optimal humidity levels is crucial for successful cultivation, and growers should aim for conditions that mirror its native habitat. Careful attention to temperature and humidity ensures that Jack Herer plants develop robustly, producing the desired trichomes and sticky resin.

Flowering

Jack Herer typically flowers in eight to 10 weeks when cultivated indoors and between late September and early October when grown outdoors.

FAQ’s

  • Jack Herer stands out for its balanced composition of 55% sativa and 45% indica, resulting in a unique blend of cerebral and bodily effects. Named after the famed cannabis rights advocate Jack Herer, this strain has gained global recognition for its uplifting qualities and potential therapeutic benefits, including the management of anxiety, depression, and chronic pain. Its versatile genetics have also contributed to the development of several other popular strains.

  • Caution is advised when dosing Jack Herer, whether through edibles, tinctures, or inhalation. It is recommended to start with a dosage below 5 mg THC, monitoring its effects before considering redosing. For inhalation, a few puffs should be taken, followed by a 20-minute observation period before deciding on additional doses. This cautious approach helps users avoid potential overwhelming effects and anxiety associated with higher doses.

  • Jack Herer is a resilient strain that can be cultivated both indoors and outdoors. When grown indoors, its height, which can reach up to 6.5 feet (2 meters), may require management techniques like topping to control growth. The strain thrives in a Mediterranean-type climate, preferring temperatures between 70 and 80 degrees Fahrenheit (21-27 degrees Celsius). Adequate humidity levels are crucial for optimal development. Silica-based nutrients are recommended to support sturdy stem growth, and growers can anticipate a bountiful yield of up to 18 ounces per square meter indoors or per plant outdoors.

Headshot of Steven Fiore, MD

This article has been reviewed by Steven Fiore, MD.

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