Jack Herer

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Lineage Seeds Jack Herer

Jack Herer is a sativa-dominant hybrid, 40% Indica / 60% Sativa, born from crossing Haze, Northern Lights #5 and a secret Skunk. It carries the Berry, Fruity, Sweet and Tropical flavors listed for it over a strong, cerebral head high drawn from its Super silver haze Haze heritage.

With a Medium THC of 20%, it is a great choice for anyone after a happy, uplifting experience with a good dose of energy.

Origin

Jack Herer was hybridized in the 1990s by Amsterdam seed banks and named after the famous American cannabis activist. It quickly gained popularity for its remarkable qualities and has collected numerous cannabis-competition awards across Europe and the USA. Known for its prestigious origins, Jack Herer stands as a testament to the expertise of Dutch breeders.

Jack Herer seeds can be found through both American and European sources. Its genetics combine Haze, Northern Lights #5 and Skunk into a sativa-dominant hybrid with a rich heritage and a short flowering time. Whether your seeds come from the USA or Europe, you can expect high-quality plants with exceptional potency and flavor.

Jack Herer Strain Sativa or Indica?

Jack Herer is a predominantly sativa strain, a 40% Indica / 60% Sativa split. Its genetics deliver a stimulating cerebral high that suits creative work and daytime use, and while it keeps some indica traits, the sativa dominance leads to an energizing experience. That balance sharpens focus and lifts the mood, which has made it a favorite among those seeking mental clarity and inspiration.

Jack Herer Strain Effects

Jack Herer is celebrated for its uplifting effects. Its sativa dominance delivers an immediate cerebral buzz that leaves users feeling creative, energetic and focused, while a gentle underlying ease keeps it suitable for social settings.

Effects vary from person to person.

Jack Herer Seeds Flowering Time

Jack Herer has a moderate flowering period of around 8 to 10 weeks. This efficient cycle lets cultivators plan their harvests and keeps the process timely and productive.

Whether you are an experienced grower or a beginner, that manageable flowering time, paired with the strain’s potent, invigorating effects and consistent genetics, makes Jack Herer a valuable addition to any garden for growers and consumers alike.

How To Grow Jack Herer Seeds?

Jack Herer seeds can be grown indoors or outdoors under optimal conditions. The plants are moderately easy to grow and hardy, though it is always worth guarding against pests. A few methods help retain and enhance the terpenes and flavors of your feminized Jack Herer buds:

• Use a quality substrate. Perlite, peat or coco coir are ideal for moisture retention.
• In our customers’ experience, good technique can increase yields by up to 20%.

Indoors, use wide, vertical space and the ScrOG method for a uniform canopy and larger lower flowers. If you prefer to grow outdoors, our grow guide covers optimal cultivation anywhere in the world. Feed proper nutrients through the seedling, vegetative and flowering stages, and indoors set up good tents, fabric pots, LED lighting, an air extractor and a carbon filter. Keep daytime temperatures between 68 and 80 ℉, and night temperatures 7 to 9 ℉ cooler than the day.

These feminized plants prefer low humidity: keep relative humidity at 55 to 60% in the vegetative phase, around 40% in flowering, and down to 30% by harvest.

Outdoors in the northern hemisphere, sow in April for a mid-October harvest, at about 19.4 to 22.93 oz per plant (550 to 650 g). Indoors, the flowering time runs 8 to 10 weeks with yields of 1.97 oz/ft² (600 g/m²).

Ideal Climate for Cultivating

Jack Herer flourishes in a temperate climate of long, sunny summers and mild, wet winters. The sweet spot for growth sits between 70 and 85 ℉ (21 to 29 ℃), which supports strong germination and development. The seeds adapt to various elevations, but abundant, consistent sunlight is ideal, along with a yearly rainfall of 15 to 30 inches (380 to 760 mm) and well-draining soil to avoid root problems.

In the United States, Jack Herer does best in states with similar weather, such as California, Oregon, Washington, Nevada, New Mexico, Arizona, Texas, Florida, Southern Georgia and Hawaii. These regions offer the climate that Jack Herer feminized seeds need for a successful, bountiful harvest, and in the right environment the strain’s genetic qualities truly come through, making it a worthy choice for novice and experienced growers alike.

What Does the Strain Smell Like?

The buds of Jack Herer are rock-hard, soaked in resin and often carry a crystalline sheen from the sheer amount of trichomes. On the palate Jack Herer backbone of spicy pine, Haze incense, sour lemon and an earthy skunk background.

Jack Herer makes for a smooth, soft smoke with a happy, energetic character. Thanks to its heavy resin production, it is also an ideal strain for high-quality extracts and concentrates that preserve its spicy, pine-forward aroma.

Experiencing The Strain

With a Medium THC of 20%, Jack Herer brings a happy, clear-headed state that lifts the mood and sharpens concentration, leaving most users cheerful and energized. Many also turn to it for help with fatigue and low spirits during the day.

A mostly sativa plant with a sturdy main stem that supports its satellite branches, it grows well indoors or outdoors, with a higher yield when it gets full outdoor sunshine.

As a feminized strain, Jack Herer has a flowering period of 8 to 10 weeks, and feeding the right nutrients at each stage helps develop resinous buds and trichomes.

You can also find this seed in our Amsterdam Legends Pack.

Jack Herer Strain Terpenes

Jack Herer’s aroma is driven by a fresh, pine-forward terpene profile, and four terpenes do most of the work behind its spicy, herbal character and its energetic, clear-headed effect.

Terpinolene is the signature of Jack Herer, a fresh, piney, herbal note with a citrus edge. It is the terpene most tied to an uplifted, bright mood and mental energy, and it anchors the strain’s reputation for lifting low spirits and sharpening the day.

Alpha-Pinene brings a crisp, pine-sap sharpness linked to alertness and clear breathing. It is the terpene behind the strain’s focused, energizing character, helping to cut through fatigue and mental fog.

Completing the profile, Gamma-Terpinene, P-Cymene and Alpha-Phellandrene add herbal and citrus sharpness, Terpineol a soft floral lift, and Nerolidol with Trans-Nerolidol a faint woody calm that balances the energetic core.

Cannabis seeds are sold for collection and genetic preservation. Check the law in your country before germinating them.

Sold by Blimburn Seeds. European orders ship from Spain and are invoiced in euros. Prices on BudBid are converted from Blimburn’s US dollar prices at the European Central Bank rate of 19 October 2026, so the final price at checkout may differ slightly. Adults only.