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Jack Herer Marijuana Seeds – History, Feminized, Auto-Flowering and Crosses

Amongst famous strains, Jack Herer is one of the most beloved as well as one of the most notoriously difficult to grow. Named for late cannabis activist Jack Herer, author of The Emperor Wears No Clothes and subject of the film “Emperor of Hemp” this strain was one of the first strains to make hybrid seeds wildly popular. It is a credit to breeder Ben Dronkers of Sensi Seeds that this strain remains one of the best hybrid seeds available so many years after its 1994 release.


Jack’s persevering efforts to shine the light of truth on the medicinal and industrial benefits of herb and hemp laid the foundation of the legalization movement that has swept the world in recent decades. In fact, the progress that the world enjoys today, with many countries finally removing the cloak of shame that was cast upon cannabis, is a direct result of dear Jack’s efforts.


Jack’s controversial and groundbreaking book “The Emperor Wears No Clothes” laid the foundation of the legalization movement using common sense along with scientific data to dispel the “refer madness” consciousness that has gripped the world since the early 1900s because of the predatory aspirations of the cotton industry.

Jack Herer seeds indeed do justice in honoring “The Hemperor.” Pleasure and medicinal users celebrate this tasty, euphoric, inspiring; energizing and motivating; and yet physically relaxing strain of herb. It provides the best of all the worlds that Sativa, Indica, and Ruderalis can offer in full force.

Created with a blend of Haze, Northern Lights #5, Shiva Skunk, and Ruderalis, our feminized Jack Herer seeds provide an easy-to-grow crop with the promise of respectably hearty yields – whether grown indoors or outdoors.

Growers love Jack Herer plants because their feminized and auto-flowering traits alleviate lighting and sexing concerns in growing these crops. They are also assured of a quick growing season that will dependably bring forth a premium-quality harvest of 16% THC buds with a medium-rated potency of the healing cannabinoid CBD.

Indoor crops will reach a modest height of 40 to 80 centimeters, or 15 to 30 inches and bear a hearty yield between 350 to 400 grams per meter-squared. Outdoor crops will achieve a height of 60 to 80 centimeters, or 24 to 30 inches, and bring forth 70 to 120 grams per plant – dried.

Since our Jack Herer strain is auto-flowering, both indoor and outdoor growers can begin their harvest in 9 to 10 weeks after planting. Jack Herer plants are sturdy, weather hardy, and resistant to pests, making this strain a prime choice for first time growers.

Jack Herer is considered a daytime herb with the ability to energize and motivate the user into action while providing a relaxing effect on the nervous system and relieving feelings of anxiety.

Physicians recommend and prescribe Jack Herer herb for anxiety, migraines, ADD/ADHD, PTSD, bipolar disorder, and conditions of mental depression. Both pleasure and medical users enjoy the long-lasting and potent uplifting, joyous, inspiring, creative and euphoric properties that the Jack Herer strain provides in abundance.

This mighty little plant aptly befits The Hemperor that it was designed for and named after, Jack Herer, who’s powerful presence has left an indelible healing impression on our modern culture, and who’s undefeatable efforts have paved the way for brighter days for all who benefit from the healing properties of cannabis.

Type50% Indica / 50% Sativa
Flowering Time50-70 Days
EffectCerebral High, Body Buzz


The cream of the crops and perhaps the most exquisite ganja you will ever encounter; this strain ranks as the most awarded variety in the history of harvest festivals. Nine awards and counting would be the pinnacle of recognition for any strain, yet Jack Herer manages to go a step further and bears the distinction of being distributed under prescription by Dutch pharmacies as a recognised variety of medicinal-grade cannabis.

Sensi’s champagne of strains is named in honour of Jack Herer, author of The Emperor Wears No Clothes. Through tireless activism and his landmark book, Jack Herer can take most of the credit for reminding the world that cannabis in all its forms has always been one of humankind’s most valuable resources, and that we can literally save the planet with hemp!

The sublime blend of tropical Sativa high and monstrous Indica resin production captured in Jack Herer must be seen and sampled to be believed. At their peak, buds are so thickly smothered with clear trichomes that they appear sugar-frosted or sparkling with dew-drops. This crystal-coating extends to spear-leaves, fan leaves and even to Jack’s stems and stalks.

Plants from seed show favourable variation, due to Jack Herer’s complex background and delicate balance right at the cusp of Sativa and Indica. Enhanced features from both sides of the family are strongly evident and are expressed in different combinations, allowing growers to select mother plants tailored to their circumstances and tastes.

Three of Jack’s four main phenotypes are heavily Sativa-influenced while the fourth has a growth pattern leaning towards Indica – fast-flowering and relatively compact with a dense, expansive, rounded bud structure that’s suited to cash-cropping. Jack’s Sativa phenotypes can also produce a good per-metre or per-plant yield when cultivated skilfully, though it is rare for these crops to be sold commercially. Most growers who have watched their succulent, super-sized calyxes swell and mature will be hesitant to sell such buds, and the best Jack Herer is often passed around a select circle of friends – an example of one of those things that money just can’t buy.

The trait common to all Jack Herer phenotypes is a dazzling double-edged potency – a stratospheric cerebral high underpinned by a breathtaking body-buzz with seismic power. Smokers should be prepared to feel the earth shake beneath their feet – which can be a very pleasant feeling when your head is firmly in the clouds.

Seed strainVotesRating
Purple Power898.0
Jack Herer558.4
G13 Haze438.1
Durban Poison425.7
AK 47 Weed Seeds1888.8


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