Sensi Seeds
Jack Herer

Jack Herer :: Cannabis Strain Infos

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Official Information / Basics about Jack Herer from Sensi Seeds

Strain Name
Jack Herer
Sensi Seeds
~60 days
Normal or female seeds.

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.

Short flowering period (50 - 70 days)
55% Sativa / 45% Indica

High Times about the lineage:
While Sensi say the exact lineage is a closely-guarded secret, it is accepted that Jack Herer is a 3-way hybrid of Skunk #1, Northern Lights #5 and Haze. The precise lineage is probably Haze x [Northern Lights #5 x (Northern Lights #5 x Skunk #1)] which suggests that Sensi began by selecting a male from their NL5 x SK1 seedline (AKA Shiva Skunk) and backcrossing him to the NL5 female cutting. As Sensi purchased Neville's breeding plants, they had both the Haze A and C males, so it is likely that they then chose a female NL5 x (NL5xSK1) plant and pollinated it with one of the Haze males to create Jack Herer., this would make Jack 50% Haze, 37.5% NL5 and 12.5% SK1. This gives Jack Herer a similar composition to Super Silver Haze and Mango Haze which are 50% Haze, 25% NL5 and 25% SK1.

User-Generated Strain-Profile

Known Phenotypes:
beta version - add an other phenotype
1.: long, stretched, slowly blossoming, sativa-dominant Phenotype #2

For this strain we got input by 9 user(s). Here a short overview:

Flowering Time Indoor: 55 - 64 days (~59 days)
Yield / Quantity Indoor: The crop of this strain is high.
General Impression Indoor: is all together extremely good and very recommendable.
Harvest Time Outdoor: Middle of September +/- 2 Weeks in BmShβ climates.
Strength / Lasting Effect: The weed is strong and long lasting.
Yield / Quantity Outdoor: The crop of this strain is slightly above average.
General Impression Outdoor: is all together a quite good strain.
Votings of our users: Jack Herer gets 7.63 of 10 possible Points in the average!

Medicinal Properties you will find info about effects and dosages for this strain.

Strain VS. Strain :: Direct Comparisons

Please click here to display a list of all direct comparisons (currently 1 varieties) with Jack Herer.

Where to buy Jack Herer cannabis seeds?

Jack Herer from Sensi Seeds is available as regular and feminized seeds. In 16 seedbanks, we found 44 offers between EUR 18.94 for 1 regular seed and EUR 692.69 for 40 feminized seeds. If you are looking to buy Jack Herer Cannabis Seeds from Sensi Seeds somewhere - have a look to our Jack Herer Price Comparison page with all current offers from all the connected seedbanks and shops - or visit one of the following tested, trustworthy and recommended seed-shops directly to check out their current Jack Herer offers: Sensi Seeds,, Herbalist, Chu Majek,, Amsterdam Seed Center, Mary's Seeds, Cannapot Hanfshop, Indras Planet GmbH, Zamnesia, Herbies Head Shop, Alchimia Grow Shop, Discreet Seeds, Linda Seeds | Linda Semilla, and Canna-Seed Seed Shop.

Strain Lineage / Genealogy

Crossbreeds and hybrids with "Jack Herer"

User-Comments about this strain:

at the 23.10.2017, 07:09:This comment is connected to a Plant-Profile!

Put 5 seeds into earth, all germinated. Three feminin, two men had to go. Raised below a 125W ESL, this must be considered when reading my report! Good harvest for this equipment. Harvested the first a bit too early, but the high was excellent! As far as I can say, it was a fantastic Mix of a sativa and an indica-High. The two others I will harvest soon. Explicit recommendation! Will report more, when the others are done.

17.05.2016 Have taken a little bud and put it into the oven to dry it fast. Not the best method, so even more updates may follow. Two characteristics must be mentioned. Number one, which happened both times is, that it is very euphoric! Had to laugh a lot and even my wife asked me to take it again. Second: it relieves pain! I had a broken rip, very intense pain. So, after vaporizing a little piece the pain did not vanish, but it was softer, a lot softer! That was an enormous relieve which I enjoyed deeply. Cool, a DEFINITE recommendation! Maybe I give another update when trying the finished version of my buds. A night later I tried a differnet strain: EasyBud. There was no comparison, Jack Herer from SensiSeeds is a special one! Two thumbs up!

24.03.2017 After growing some Indica-weed I have to underline that Jack Herer is special. A wonderful plant, I do appreciate the turn so much! Still my highest recommendation.
24.07.2017 2 more seeds that sprouted all - nice quality. One was a cripple but now looks good. Today week 8 hast started, since a week light is in flowering mode.

03.08.2017 Because of lice everything seems to delay. Nearly three weeks flowering and still no gender.

16.08.2017 I'm so lucky, both are females. So another two Jacks will be harvested in - lets say: two months plus/minus two weeks. GREAT! :)

20.10.2017 Harvest 5 and 4 days ago. Drying is in process. Test and report will follow soon.

23.10.2017 Tested the first harvested one. Very nice turn, with a slight plus on the sativa turn. Still my recommendation!


at the 26.01.2016, 21:26:This comment is connected to a Plant-Profile!

Ich hab die Jack vor 10 jahren gehabt und es war Das Stärkste (psychedelisch) Weed, bis heute.
Ich hab in den ganzen jahren des kiffens , selbst in Amsterdam keine So Starke Pflanze Mehr geraucht.
Es ist einfach Die Königin unter den Haze Dominanten Pflanzen und jeder Kiffer von Paris bis timbuktu sollte sie min. einmal in seinem Leben Probieren dürfen.

Das Zeug macht ganz klar Haluzinationen und
ist für Medizinische Zwecke in allen Gebieten Geeignet

soll nochmal einer Sagen des das Graß fürher Schwächer war, eher anderst rum!


at the 19.11.2014, 00:11:

First of all. This is an expensive strain so the seeds are mostly lying around some time in some shop hopefully in the fridge.
Bought the seeds online at the sensi seeds shop at the beginning of the year and told them i want freshest stock they have got.
Germinated 5 seeds all sprout 4-males 1 very nice girl. With a real haze smell fat calyx and fast growth and 10 weeks bloom. Very nice.
Next 5-seeds 2-girls 3-males. 1 girl with extreme long flowering maybe 16-20 weeks was cut down because of it is unpractical for indoor.
The second is a nice girl with small calyx but fat buds and a good production of bud-mass.
The smell on the two girls is nearly the same just the structure is complete the opposite.
Overall a nice strain for the grower who knows what to expect.


at the 07.10.2013, 01:52:

Jack Herer/Super Silver Haze - Amnesia cut

Understandable why the original breeder(s), whomever that is, might wish to hold back some information, and indeed may wish to hide their best creations within a sizeable gene pool to ensure a degree of exclusivity.


at the 01.02.2009, 03:36:This comment is connected to a Plant-Profile!

Schon beim Ansehen dieser Pflanze weiss man, dass sie eine Königin ist. Sattgrün steht sie im Anbauraum und lässt alle anderen blass aussehen. Stecklinge (Österreich) sind wärmstens empfohlen, da die Samen ja leider fast unbezahlbar sind.

Trotzdem wäre sie in meinen Augen sogar diesen Preis wert, denn abgesehen von einem aussergewöhnlichen High besitzt sie noch sehr viele andere lobenswerte Eigenschaften.

So scheint sie gegen echten Mehltau nahezu vollständig resistent zu sein (Ja, ich hab zu viel gegossen vorm nach Amsterdam fahren *schäm*) während der Rest der Homebox schwere Schäden davontrug, stand sie noch immer sattgrün in der Mitte und schien als wollte sie die anderen auslachen. Auch Thripse lassen sie aussergewöhnlich kalt, fast als hätten sie zuviel Respekt um von ihr zu naschen.

Was sie nicht mag ist beschneiden, in welcher Form auch immer. Sie braucht länger als jede andere Pflanze die ich bis jetzt hatte um sich vom beschneiden zu erholen und ist somit auch als Mutter nicht so leicht zu handhaben. Sie gibt einfach weniger Stecklinge her...

Einzig die leider nur durchschnittliche Erntemenge ist wohl für Kommerzfreunde nicht zu empfehlen, der Geniesser aber sollte sich diese ganz besondere Pflanze nicht entgehen lassen.

Imho der Champagner unter den Holland Sorten


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