Jack Herer Seeds from Other Seedbanks

Best Auto-flowering Jack Herer Seeds

Best Auto-Flowering Jack Herer Crosses

Best Jack Herer Crosses

About Jack Herer

True to its Haze heritage, Jack Herer is not cannabis for the uninitiated. Newbie smokers may find themselves overwhelmed by the powerful cerebral high that whisks them away after the first puffs. The soaring, giggly and often trippy mental effects are accentuated by a buzzing body stone for a package that is pure medicine for both mind and body.

In the grow room this strain is well-known for being difficult, yet Sensi swears it is no tougher to handle than any Sativa dominant strain. It is true that getting the very best from Jack Herer with good yields and high quality buds requires an expert touch, but anyone with some grow experience should be able get decent results. Those with experience cloning will have the best results with Jack Herer.

If you have a long, hot growing season like that of Southern Spain, Jack Herer will grow into a veritable cannabis tree and produce stunning yields outdoors.

Despite the difficulties it presents, a Jack Herer grow should be on every Sativa lover’s bucket list. The process is joyful as you watch the four distinct Jack Herer phenotypes develop in your grow room, and the resultant richly flavored buds with their unique hit are more than reward enough for your efforts.

History of Jack Herer Cannabis

Jack Herer cannabis has simple and touching history. It was bred by Ben Dronkers of Sensi Seeds in honor of his friend and famous marijuana activist, Jack Herer. Dronkers worked carefully over several years to produce this Sativa dominant strain. While Sensi declines to release the exact parentage of the original Jack Herer, it is speculated with some certainty that it is a 55% Sativa cross of Haze, Shiva Skunk and Northern Lights #5.

Since the original Jack Herer release in 1994, many other seedbanks have grown and bred Sensi’s strain. The end result is a large collection of strains going by the name Jack Herer. Many of these such as the strains from Vision and Green House are strikingly similar to the original, while others, like those from Bull Dog and BC Bud Depot have varied more widely.

Sensi holds the vast majority of the awards for this strain, and is widely acknowledged not only as the originator of Jack Herer, but also as the seedbank with the highest quality JH seeds.

“Hemp will be the future of all mankind; or there won’t be a future.” Jack Herer

The man who inspired the exceptional Jack Herer strain was a pioneer of cannabis activism. He spent his life promoting the benefits of marijuana, not just in terms of its effects on the physical and mental health of smokers but its potential as a source of textiles, fuel and even food. Herer believed cannabis could literally save the planet.

Jack Herer celebrated many of facets of marijuana. He knew it as a mind-expanding drug which had the power to remind people of their creativity, humanity and their relationship to the rest of life on the planet, as a medicine with the power to ease pain and heal disease, as a renewable fiber to replace trees in the production of paper and as a fuel to eliminate our reliance on oil. In its last manifestation, as a source of relief from dependence on fossil fuels, cannabis would also put an end to conflict and bloodshed related to oil in the Middle East.

Industrial growing of hemp, distinct from medicinal and recreational marijuana plants in that is very low in THC, was outlawed under the U.S. Controlled Substances Act of 1970 because of its relationship to THC laden marijuana. While the current American government’s fear of recreational drug use prompted this ban, our nation’s forefathers strongly supported the growth of hemp:

“Hemp is of first necessity to the wealth and protection of the country.” Thomas Jefferson

“Why use up the forests which were centuries in the making and the mines which required ages to lay down, if we can get the equivalent of forest and mineral products in the annual growth of the hemp fields?” Henry Ford

Fortunately the efforts of cannabis activists such as Jack Herer are beginning to see fruition. Yet while medicinal and even recreational cannabis use has begun to be legalized in several states, it remains illegal to grow hemp commercially. Each year bills come before congress to legalize the industrial growth of this valuable and versatile plant, but they have yet to be signed into law.

Jack Herer argued that the reason for the industrial hemp ban and the other laws prohibiting the growing and use of marijuana are intentional acts by the United States Government in support of large-scale commercialization and as a source of power. If hemp is the wonder plant Herer believed it to be, legalizing marijuana in all its forms could be the impetus for a much larger revolution which could change the way we think, move and interact with the world around us.

Growing Jack Herer

Jack Herer is not easy in the grow room, mostly because of its massive size which is challenging to control and requires greater inputs of light and water. Unless you are an experienced grower who has handled large Sativa dominant or Haze strains before, you may choose to start off with a more manageable auto-flowering Jack Herer variety.

Feeding Jack Herer

Like many Sativa dominant hybrids, Jack Herer is sensitive to over-feeding. Limit her nutrients to about 80% of the recommended amount and you shouldn’t have problems. Remember to balance your nutrients for each stage of growth: during vegging you should use half as much phosphorus and potassium as nitrogen, while during flowering the plants will need extra phosphorus to produce resinous buds. Keep the potassium level at half that of nitrogen to avoid nutrient lockout.

It is important to thoroughly flush your Jack Herer plants by giving them only plain water the last week before harvest. Residual nutrients can cause your buds to develop a chemical tang during curing and reduce their potency. For more information check out our Using the Right Nutrients page here.

Dealing with Massive Cannabis Trees

Jack Herer’s size is perhaps her most challenging quality in an indoor grow. You will do best to grow her in a room with tall ceilings and allowing her to stretch as much as she wants. If you have the right space you may actually find you can fit more Jack Herer plants than Skunk or Indica plants in the same space. These girls grow upward, stretching their many flowered fingers towards the sky, a shape which allows you to pack more in as long as you have the space for upward growth. The shorter, bushier Indica varieties require more horizontal growing space.

A few pieces of advice to handle giant Jack Herer plants:

1. Use big pots.

It is critical that the roots have room to grow. If they run into the edges of your pots too soon the growth of the plant will be stunted and your yields will suffer greatly. Some growers use pots as big as 25-35 liters and see yields of 500 g/plant as a result.

2. Check your Lights.

Make sure you have ample room to raise your lights, especially if you are using HID lights. You can easily burn your plants if you don’t keep them a respectable distance from the lights, especially as they hit the 2 meter mark during flowering. Consider growing Jack Herer under full spectrum LED Lights like the Spectrum King to avoid this problem.

3. Flower soon after rooting.

By limiting the time the plant spend in veg you can control their height, somewhat. They will still stretch massively during flowering, but you can limit their final height this way.

4. Take clones as soon as possible.

If you are set up to handle clones, start taking them from each plant as soon as it hits 25 cm. Put the clones straight to flower. Not only will this allow you to identify the males early on, it will also reveal the phenotype of each plant. If height is a concern, you can choose to keep the ones showing the shorter, stockier Indica phenotype rather than the leggy Sativas.

The Four Jack Herer Phenotypes

Growers should not expect to see uniformity in their Jack Herer plants. They grow in four distinct phenotypes:

Phenotype A: A strongly Sativa dominant pheno, these plants will reach record heights in the grow room, stretching up to five times once flowering begins. But they also produce what are arguably the most potent of the Jack Herer buds. Identify them by their irregular, oversized calyxes, which will cover the top half of each stem and branch by the end of flowering.

Phenotype B: The most Indica-esque of the four Jack Herer phenos, B still doubles or triples its vegetative height during flowering. Yet it is the fastest phenotype, with a more compact growth pattern and heavy, resinous buds which cluster around the nodes. They do run partway along the stem. Typically the upper branches of this pheno will combine with the main stem, forming a large central cola. While all the Jack Herer phenos have the creative, soaring cerebral high, this one has a stronger physical component than the phenos A or C.

Phenotype C: This pheno is very similar to A, and many growers may not be able to distinguish the two, though Sensi lists them separately. These plants are strongly Sativa dominant, growing tall and slender with productive branches. The calyxes are not as long as those of A, but they grow outwards in a stringy fashion that gives the buds a spiky appearance. This trait means they generally produce the largest buds of the four phenotypes, though not necessarily the highest yields. The flavor is delicious- creamy, sweet and a little spicy. The high has a little extra energy to it.

Phenotype D: These plants produce dense, Indica like buds at each node but gain massive height during flowering. Since the calyxes don’t run up the stems like in phenos A and C this creates gaps in between nodes. This pheno makes up for it by producing ridiculous amounts of resin, and it offers a stronger physical body stone than the other phenos. There is considerably less branching in these plants as well, allowing them to be grown closer together. They also finish flowering quickly, making them easier to grow and manage.

Use the Right Lights for Jack Herer

Odds are you don’t have the long, hot summers necessary to grow Jack Herer outdoors, so you will need to choose the proper lights for your indoor grow. The two best options for Jack Herer are full spectrum LEDs or HID lights. There are pros and cons to both choices:

1. Full Spectrum LED Grow Lights

2. HID Lights

We advise not to use HID lights with your Jack Herer plants unless you have a very tall space and are able to keep the lights well above the tops of the plants, even after they reach 6-7 feet in height. Jack Herer stretches quickly during flower. You may find yourself adjusting your lights every couple of days to keep the distance right. While HID lights are less expensive to initially purchase, they cost more in electricity over time than full spectrum LED lights. If you choose them, manage your grow carefully! Many experienced cultivators have burned their Jack Herer plants just when they were about to reap the harvest of months of hard work.

Full spectrum LEDs are the safest choice for a Jack Herer indoor grow, especially if you are a less experienced grower. These efficient lights can save you up to 50% on your electric bill, reduce the need for ventilation and don’t require reflectors. Choosing full spectrum LED lights will simplify one aspect of an already complicated grow.

Training Jack Herer

You may choose to apply some training techniques to your Jack Herer plants to try to control their growth or to increase yields.

Jack Herer will often defy all your attempts to limit her growth, but there are a couple of techniques she responds well to:

• Topping– Lightly clipping the tops of your plants can make single kola into 2 or even 4.
• Fimming– By taking Topping a step further, Fimming quickly multiplies your flowering heads from 1 to 4 at each site.
• Low Stress Training (LST)– In this technique you are basically tying the branches of the plant down. This works well to limit the height of Jack Herer plants, though you will need to do it several times and they will take up more horizontal growing space.
• Super Cropping– Without doing any actual trimming you can still stress your plants to increase their strength, growth and yields. This is the most effective way to boost yields in most Jack Herer plants.

If you have Jack Herer in your grow room you have chosen a marijuana monster that will reward you with some of the tastiest buds and most mind-blowing highs you have ever experienced. Respect her size in the grow room and give her the space she wants, and you may find yourself converted. Once they learn how to handle Jack Herer, many growers never go back to other strains again.

Growing Jack Herer Outdoors

If you have a warm, dry climate with a long growing season Jack Herer can be grown outdoors. She needs 2-3 months of warm, long days to veg to her full potential, plus at least 10 weeks of heat to finish flowering. Don’t try to hide these plants. They will become trees outdoors, easily topping 2 meters and defying any attempts to conceal them. If you plant several be sure to give them ample room for their roots to grow. They should not be spaced closer than 1.5 meters apart. If your climate cooperates you could see some truly amazing yields from Jack Herer outdoors.

Awards

Jack Herer is one of the most highly awarded strains on the market. In the world of cannabis competition it grows on a pedestal alongside the famous White Widow, Northern Lights and Super Silver Haze.

Sensi Seeds can claim nearly all of the original Jack Herer cannabis competition prizes. While other seedbanks have bred and made slight alterations to Jack Herer, the awards don’t lie: Sensi’s original strain is a power-house of near perfection that needs no alterations.

• 2006: 2^nd – High Life Cannabis Cup (Seed Bank Hydro Haze), 2^nd – High Life Cannabis Cup (Grow Shop Hydro Haze)
• 2005: 1^st – High Life Cannabis Cup (Coffeeshop Hydro)
• 2004: 1^st – High Life Cannabis Cup (Coffeeshop Hydro), 1^st – High Life Cannabis Cup (Seeds Haze Hydro)
• 2003: 1^st – High Life Cannabis Cup (Seeds Hydro), 1^st – High Life Cannabis Cup (Grow Shop Bio), 3^rd – High Life Cannabis Cup (Coffeeshop Hydro)
• 2002: 3^rd – High Life Cannabis Cup (Coffeeshop Hydro)
• 1999: 1^st – High Times Cannabis Cup (Sativa Cup)
• 1994: 1^st – High Times Cannabis Cup (Overall)

To check out more award-winning strains look at our Best Cup Winners page.

Jack Herer from Sensi Seeds

Many seedbanks have bred Jack Herer, but it is only Sensi Seeds who can claim to have the original.

#1 Sensi – Jack Herer Seeds

Best For: Crystal Clear High

Jack Herer from Sensi is one of the most popular strains of all time. It is the clear, clean cerebral high coupled with a peaceful humming body stone that made this strain a favorite of the man Jack Herer, as well as an easy choice for smokers and judges alike.

The original from Sensi grows in four distinct phenotypes, the development of which is a joy to observe in the grow room. The first three have strong Sativa characteristics. Think carefully before starting your seeds, as some of these girls have been known to reach over 10 feet in height. The fourth phenotype has an Indica growth pattern. She stays short, squat and flowers quickly compared to her leggy sisters. All four phenotypes deliver the same quality high that made this strain so well loved.

• Type Sativa Dominant
• Height Tall and Big
• Flowering time 9-11 weeks
• Awards won 11 Cannabis Cup Awards
• Yield 400 g/m²
• Feminized Yes
• Autoflowering No
• Growth difficulty Difficult
• THC level High

For Similar Strains check out:

• AC Genetics Turbo Jack Seeds

• Dinafem Critical Jack Seeds

• Advanced Seeds Auto Jack Herer

• Royal Queen Royal Jack Automatic Seeds

Jack Herer from Other Seedbanks

While Sensi has won the bulk of the Jack Herer awards and offers some of the highest quality seeds available, other seedbanks have made some interesting changes and adjustments. You may choose to grow a Jack Herer from a different seedbank because it has qualities you desire, or simply because it is less expensive than the seeds offered by Sensi.

#1 Light of Jah Feminized Seeds

Best For: The Same Plant by a New Name

Light of Jah deserves a mention here, because you will see it as you are shopping for Jack Herer seeds. This is simply a Jack Herer X Jack Herer, or another name for the Jack Herer plants we know and love. Many seeds from many seedbanks are sold under this name, so you will find its statistics for yield, THC content and flowering time as variable as those of the many Jack Herer strains listed here. Do your research and choose a reliable seedbank when shopping for Light of Jah seeds, just as you would for any Jack Herer strain.

• Type Sativa Dominant
• Height Medium
• Flowering time 8 weeks
• Awards won Same as Jack Herer
• Yield Variable
• Feminized Yes
• Autoflowering No
• Growth difficulty Moderate
• THC level 15-22%

For Similar Strains check out:

• AC Genetics Turbo Jack Seeds

• Advanced Seeds Auto Jack Herer

• Light of Jah Feminized Seeds

• Nirvana Jock Horror Seeds

#2 Vision – Jack Herer Seeds

Best For: True to the Original Jack Herer

Similarities to Sensi’s Original JH:

In the case of Jack Herer Vision made very few alterations to the original. This is a potent Sativa strain with the clear, creative high and grow room sensitivities of Sensi’s strain..

Differences:

The JH from Vision tends to stay a little smaller than that from Sensi, and her THC levels can be slightly higher.

Tips for the Grow Room:

Vision’s Jack Herer is touchy in the grow room. While she requires a lot of nutrients she doesn’t tolerate either over or under fertilization, so watch her carefully for signs of improper feeding. She needs room to stretch during flowering. Consider either SOG or Super Cropping, both of which she responds to well. She will need support during flowering. This is a strain that should not be attempted by an amateur grower, though experts will get great joy and a potent product in reward for their attentive care in the grow room.

Comments:

Vision is a good choice if you are looking for decent Jack Herer seeds at a lower price than Sensi. The plants are not as consistently mind-blowing as the original’s, but they are about as close as possible.

• Type Sativa 80%, Indica 20%
• Height 2 meters
• Flowering time 8-9 weeks
• Awards won none
• Yield 500 g/m²
• Feminized No
• Autoflowering No
• Growth difficulty Expert
• THC level 20%+

For Similar Strains check out:

• AC Genetics Turbo Jack Seeds

• Advanced Seeds Auto Jack Herer

• Light of Jah Feminized Seeds

• Royal Queen Royal Jack Automatic Seeds

   

#3 Green House – Jack Herer Feminized Seeds

Best For: Fast Flowering, True JH High

Similarities to Sensi’s Original JH:

Strong mental and physical effects. This strain offers the fast-hitting, long-lasting and complex high that makes it worthy of the Jack Herer name.

Differences:

This JH strain has a little stronger Indica influence than the original. It finishes flowering in only 8 weeks, and stays to a more moderate size.

Tips for the Grow Room:

Try SOG or SCOG to boost the already ample yields and control the size of these plants. This strain does well outdoors, and does not require as warm a climate as some JH strains. Grown in fertile soil yields outside can reach 1200g/plant.

Comments:

Green House’s Jack Herer is a cross of Haze and Red Skunk.

• Type Sativa 60%, Indica 40%
• Height Medium
• Flowering time 8 weeks
• Awards won 2013 San Francisco Cannabis Cup 2^nd & 3^rd (Best Medical Sativa) 2010 San Francisco Cannabis Cup 3^rd (Overall) 2009 San Francisco Cannabis Cup 2^nd (Overall)
• Yield 800 g/m²
• Feminized Yes
• Autoflowering No
• Growth difficulty Moderate
• THC level 20%+

For Similar Strains check out:

• AC Genetics Turbo Jack Seeds

• Advanced Seeds Auto Jack Herer

• Sensi Jack Flash Seeds

• Nirvana Jock Horror Seeds

#4 White Label – Jack Herer Seeds

Best For: F2 of Original Jack Herer

Similarities to Sensi’s Original JH:

Mostly Sativa dominant phenotypes, these are tall, large plants with high yields. The high is powerfully cerebral, often nearing psychedelic.

Differences:

As Sensi explains, if their Jack Herer is the Champagne of strains this is the “Me´thode Champagnoise of top-class cannabis hybrids.” It is not quite the stunning smoke as the original, but it is superior to many copy strains.

Tips for the Grow Room:

White Label Jack Herer has the potential to get huge. There are a variety of phenotypes that will appear. Keep your eye out for a plant with high yields, strong Sativa characteristics and a more maneagable size. This is the one to save for your mother plant and make future clones from.

Comments:

White Label is a branch of Sensi Seeds. This Jack Herer is an F2 variation of Sensi’s original F1 Jack Herer strain. The parent plants were chosen to maximize the award-winning Jack Herer traits.

• Type Sativa 50%, Indica 50%
• Height 5-1.8 meters
• Flowering time 8-10 weeks
• Awards won none
• Yield 100 g/plant
• Feminized No
• Autoflowering No
• Growth difficulty Moderate
• THC level High

For Similar Strains check out:

• Advanced Seeds Auto Jack Herer

• Sensi Jack Flash Seeds

• Light of Jah Feminized Seeds

• Royal Queen Royal Jack Automatic Seeds

#5 Homegrown Fantaseeds – Jack Herer Feminized Seeds

Best For: Easier to Grow, Sativa Cerebral High

Similarities to Sensi’s Original JH:

Bright, crisp and energetic mental high. Sativa dominant effects with some subtle and mellow body buzzing.

Differences:

This strain is more tolerant of errors and is more beginner friendly than the original Jack Herer.

Tips for the Grow Room:

While this strain is a little kinder to grow errors, you should still do your best to carefully monitor nutrients and look for signs of nutrient burn or deficiency.

Comments:

Homegrown Fantaseeds has growing reputation as a quality breeder who produces stable seeds with good germination rates. While they can’t quite match the stunning effects of the original Jack Herer, they did manage to create an easier-to-grow version that still packs a solid Sativa punch.

• Type Sativa Dominant
• Height Medium
• Flowering time 8 weeks
• Awards won None
• Yield Moderate
• Feminized Yes
• Autoflowering No
• Growth difficulty Easy-Moderate
• THC level High

For Similar Strains check out:

• Light of Jah Feminized Seeds

• Nirvana Jock Horror Seeds

• Royal Queen Royal Jack Automatic Seeds

#6 Seedsman – Jack Herer Feminized Seeds

Best For: Fast Flowering, True JH High

Similarities to Sensi’s Original JH:

Giggly, trippy high that relieves depression, anxiety and headaches. Pleasant body tingle to balance out the mental effects.

Differences:

This strain flowers a little faster than the original and shows a bit more Indica influence in the smoke, though not in the grow room.

Tips for the Grow Room:

Don’t grow this strain unless you have ample room for upward growth. Expect your flowering plants to shoot to an easy 6 feet in height. Training techniques like topping and super cropping can help to manage size, but don’t expect to make her a medium sized plant. No matter what you do, this strain will need her space.

Comments:

While often listed and sold under the Seedsman name, this is the Green House Jack Herer, a hybrid cross of Haze and Red Skunk.

• Type Sativa 60%, Indica 40%
• Height Medium
• Flowering time 8 weeks
• Awards won Won as Green House Jack Herer: 2013 San Francisco Cannabis Cup 2^nd & 3^rd (Best Medical Sativa) 2010 San Francisco Cannabis Cup 3^rd (Overall) 2009 San Francisco Cannabis Cup 2^nd (Overall)
• Yield 800 g/m²
• Feminized Yes
• Autoflowering No
• Growth difficulty Moderate
• THC level 20%+

For Similar Strains check out:

• AC Genetics Turbo Jack Seeds

• Advanced Seeds Auto Jack Herer

• Light of Jah Feminized Seeds

• Nirvana Jock Horror Seeds

#7 Sannie’s – Jack Feminized Seeds

Best For: Easier Grow, Intense High and Flavor

Similarities to Sensi’s Original JH:

The same brain and body tingling high as the original. Upbeat and energetic.

Differences:

This strain is a little easier to grow, and responds to SOG and SCOG much better than the Sensi strain. The flavor has a more intense citrus note.

Tips for the Grow Room:

Training techniques work well on Sannie’s Jack. While it is a leggy Haze style Sativa, it still responds well in SOG and SCOG set-ups.

Comments:

Many will argue that this is the highest quality and most affordable Jack Herer strain currently on the market. Is it really better than the Sensi strain? Is that even possible? Let us know you experience in the comments below. Devendra please link to the comments section.

• Type Sativa Dominant
• Height Medium
• Flowering time 11-12 weeks
• Awards won None
• Yield 750 g/m²
• Feminized Yes
• Autoflowering No
• Growth difficulty Moderate
• THC level 22%

For Similar Strains check out:

• AC Genetics Turbo Jack Seeds

• Advanced Seeds Auto Jack Herer

• Light of Jah Feminized Seeds

• Nirvana Jock Horror Seeds

#8 Bull Dog – Jack Herer Feminized Seeds

Best For: Intense Mental High

Similarities to Sensi’s Original JH:

Powerful cerebral high hits quickly and lasts a long time.

Differences:

With so much extra Indica, we would expect to see some distinct differences in the grow room. The buds are heavy and resinous with good yield, and flowering finishes in a manageable 8 weeks.

Tips for the Grow Room:

The branching structure of this strain makes it favorable for a SOG or SCOG grow.

Comments:

Bull Dog has spent several years breeding and refining Jack Herer. They have added a significant amount of Indica genetics, making this the only Indica dominant Jack Herer strain available.

• Type Sativa 30%, Indica 70%
• Height Medium
• Flowering time 8 weeks
• Awards won None
• Yield 500-600 g/m²
• Feminized Yes
• Autoflowering No
• Growth difficulty Easy
• THC level 5%

For Similar Strains check out:

• Dinafem Critical Jack Seeds

• Sensi Jack Flash Seeds

• Nirvana Jock Horror Seeds

• Royal Queen Royal Jack Automatic Seeds

#9 BC Bud Depot – Jack Herer Feminized Seeds

Best For: Similar to original Jack Herer

Similarities to Sensi’s Original JH:

BC Bud Depot tells us their Jack Herer has the bright, open cerebral high and mellow body stone that made the original a pioneer of hybridized cannabis.

Differences:

BC Bud Depot says this strain shares all the same desirable qualities as the original… but we don’t know anyone who can confirm that! If you have smoked or grown Jack Herer by BC Bud Depot tell us about it. DEVENDRA PLEASE LINK TO THE COMMENTS SECTION AT THE END OF THE ARTICLE.

Tips for the Grow Room:

True to its Sativa dominance, this strain gets tall. Consider training techniques to control her size. In addition to Topping and LST you could use Super Cropping.

Comments:

Not much information is available for Jack Herer from BC Bud Depot. If you have grown these seeds, please let us know in the comments below.

• Type Sativa Dominant
• Height Tall
• Flowering time 8-10 weeks
• Awards won None
• Yield Moderate
• Feminized Yes
• Autoflowering No
• Growth difficulty Moderate
• THC level High

For Similar Strains check out:

• Sensi Jack Flash Seeds

• Light of Jah Feminized Seeds

• Nirvana Jock Horror Seeds

• Royal Queen Royal Jack Automatic Seeds

#10 Nirvana – Jock Horror Seeds

Best For: Uplifting High, Huge Heavy Buds

Similarities to Sensi’s Original JH:

Clear, trippy and upbeat cerebral high with a mellow, relaxing physical effect. The plants are huge.

Differences:

This strain finishes flowering a little faster than the original, but is otherwise very similar.

Tips for the Grow Room:

The heavy buds of Jock Horror will require support at the end of flowering.

Comments:

Jock Horror is Nirvana’s own mix of Haze, Skunk and Northern Lights. They did not work from the Sensi original, but rather sought to create their own version. The similarities between this strain and Sensi’s Jack Herer are striking.

• Type Sativa 70%, Indica 30%
• Height Very Tall
• Flowering time 9-11 weeks
• Awards won none
• Yield High
• Feminized No
• Autoflowering No
• Growth difficulty Moderate
• THC level Very High

For Similar Strains check out:

• Advanced Seeds Auto Jack Herer

• Sensi Jack Flash Seeds

• Light of Jah Feminized Seeds

• Royal Queen Royal Jack Automatic Seeds

Best Auto-Flowering Jack Herer Seeds

Ruderalis genetics worked wonders on this notoriously difficult to grow strain, putting that delicious pine-scented bud in within the reach of many amateur growers.
For more great auto-flowering strains, check out our Best Auto’s page here.

#1 Zambeza – Jack Herer Auto-Flowering Feminized Seeds

Best For: Easy, Great for Stealth Grow

Jack Herer Auto from Zambeza makes growing this famous strain a breeze, but you have to have patience. It can take up to 12 weeks to finish flowering, but remember flowering starts just days after germination in auto-flowering strains.

Despite the lengthy flower period, this is an Indica heavy Jack Herer strain. The plants stay to a short 40-90 cm in height, making them a good option for a grow box or cabinet. The buds are extremely resinous and look like they are coated with a dusting of morning frost. The plants grow strongly indoors and out, though you need to have a long enough summer to allow them to fully flower.

The Indica influence shows up in the effects of this strain as well. It hits hard and fast, with a strong body buzz that melts pain and eases sore muscles. Don’t worry; it still has the characteristic soaring head high you expect from a Jack Herer bud.

• Type Sativa 20%, Indica 50%, Ruderalis 30%
• Height 40-90 cm
• Flowering time Finishes 10-12 weeks from seedling
• Awards won None
• Yield 30-80 g/plant
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level Medium

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Advanced Seeds Auto Jack Herer

• Green House Jack Herer Auto-Flowering Seeds

#2 Green House – Jack Herer Auto-flowering Feminized Seeds

Best For: 9 Week Finish, Balanced High

The Auto Jack Herer from Green House only takes 7 weeks to flower, though it takes a little longer than some auto strains to begin flowering, needing 9 weeks in total from germination to finish.

The plants are sturdy, and at an average 3 feet in height this is not a tiny auto for stealth grows. You can try SOG growing to up the already considerable yields, though this strain is very happy when left alone in the grow room.

The final result is a bud that is very similar to that of Green House’s original Jack Herer. The high is balanced and comes in waves of physical relaxation coupled with high speed, racing brain activity that keeps you bright and social all night long.

• Type Sativa 50%, Indica 30%, Ruderalis 20%
• Height 80-100 cm
• Flowering time Finishes 9 weeks from Seedling
• Awards won None
• Yield 80-100 g/plant
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level High

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Auto Hijack Feminized Seeds

• Original Sensible Auto Black Jack Seeds

• Advanced Seeds Auto Jack Herer

#3 Advanced – Auto Jack Herer Feminized Seeds

Best For: Psychedelic High

Advanced Seeds auto-flowering Jack Herer strain is another big auto variety. If grown outdoors it can soar to a height of nearly 5 feet! Yields are decent and the bud is all quality.

Expect at least 350 g/m², ready for harvest 10 weeks from germination. THC levels are a little lower than in the original Jack Herer, but you wouldn’t know it from the high. This strain is so powerful that many users describe the experience as trippy and psychedelic. If you are a novice smoker, toke with care. The racing effects of the first few puffs will level out quickly, leaving you with a peaceful, euphoric mental high that will keep you coming back for more.

• Type Hybrid
• Height 120 cm
• Flowering time Finishes 10 weeks from seedling
• Awards won None
• Yield 350-400 g/m²
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level 15%

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Original Sensible Auto Black Jack Seeds

• Green House Jack Herer Auto-Flowering Seeds

#4 Royal Queen – Royal Jack Auto-Flowering Feminized Seeds

Best For: Easy Grow, Balanced High

Royal Queen crossed Jack Herer with their stock Ruderalis to produce this auto-flowering variety. Like the others, it is easy to grow, strong and handles minor errors in care with grace.

The smell is a woodsy, lemon scent that carries over into the smoke. The high is that beautiful blend of mental and physical effects that Jack Herer smokers seek. As a bonus, it is has a respectably high CBD content making it a good option for medicinal users. This is another quality option from Royal Queen Seeds.

• Type Sativa, Indica, Ruderalis
• Height 70-80 cm
• Flowering time Finishes 9-10 weeks from seedling
• Awards won None
• Yield 350-400 g/m²
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level 16%

For Similar Strains check out:

• Advanced Seeds Auto Jack Herer

• Green House Jack Herer Auto-Flowering Seeds

• Auto Hijack Feminized Seeds

• Original Sensible Auto Black Jack Seeds

Best Auto-Flowering Jack Herer Crosses

In addition to the straight Jack Herer X Ruderalis hybrids, there is a wide variety of Jack Herer crosses available in auto-flowering form that growers seeking the creative mental high of JH in a more manageable package should consider.

#1 Exotic – Sir Jack Auto Feminized Seeds

Best For: Quality High, Lemon Scent

Exotic’s Auto Sir Jack is a cross between Sir Jack and Skunk Auto, and is an F6 strain. While it is not a direct offspring of Jack Herer, all of its characteristics are reminiscent of that famous grandparent.

The high is a powerful cerebral experience that will leave you floating in peaceful, creative bliss for hours. This is great weed for mellow social situations, but is too powerful to be a good daytime smoke if you have work to do.

In the grow room she is big and slow for an auto-variety. Give her a full 12 weeks to finish, and make sure she has enough space as she does best without training. She is tougher than her Jack Herer ancestor, and can take more errors in feeding and watering.

The end result is worth the wait. Expect a high yield of resinous buds that have the sour lemon and incense odor of Jack Herer.

• Type Sativa, Indica , Ruderalis
• Height 100-120 cm
• Flowering time Finishes 12 weeks from seedling
• Awards won None
• Yield 500-550 g/m²
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level High

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Advanced Seeds Auto Jack Herer

• Green House Jack Herer Auto-Flowering Seeds

• Original Sensible Auto Black Jack Seeds

#2 Original Sensible – Auto Black Jack Herer Feminized Seeds

Best For: Tiny, Hybrid Stone

With the influence of Black Domina, Auto Black Jack has a heavier Indica effect than many of the JH crosses. The physical body stone settles into your body in deep waves of relaxation, though the bright mental effects are still there to keep you cheerful.

In the grow room Auto Black Jack makes growing easy. Leave your lights on 18/6 the entire growing period, and expect a solid harvest only 10 weeks after germination. This small strain is ideal for stealth growers who can hide it in a grow box or even amongst veggies in a backyard garden.

• Type Sativa , Indica, Ruderalis
• Height Very small
• Flowering time Finishes 10 weeks from seedling
• Awards won None
• Yield 350 g/m²
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level 15-18%

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Advanced Seeds Auto Jack Herer

• Green House Jack Herer Auto-Flowering Seeds

#3 Delicious – Critical X Jack Herer Auto-Flowering Feminized Seeds

Best For: Large Yield, Hybrid High

This powerhouse cross of a Critical Bilbo Auto and Jack Herer is a fast-growing strain with heavy branching and numerous flowering sites. This strain prefers to be left alone. Plant the seeds in their final site to avoid transplant stress.

For an auto-variety flowering is slow, taking up to 3 weeks from germination to begin. Expect the plants to stretch up to the 3 times their original height during flowering. Despite the late start, this strain is still ready to harvest about 10 weeks from germination.

The sticky buds have a fruity, spicy flavor with hints of coffee. The high starts out euphoric and you may find yourself unable to stop laughing. The intensity of the mental high will settle down, leaving you to enjoy a relaxed hybrid high.

• Type Sativa, Indica, Ruderalis
• Height Medium
• Flowering time Finishes 10 weeks from seedling
• Awards won None
• Yield 450-500 g/m²
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level 18%

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Advanced Seeds Auto Jack Herer

• Green House Jack Herer Auto-Flowering Seeds

• Auto Hijack Feminized Seeds

#4 Sweet – Big Devil XL Automatic Feminized Seeds

Best For: Vigorous Growth, Speed

This Sweet Seeds strain is a cross of Jack Herer and Big Devil #2 Auto. For an auto-flowering variety she is massive! You can almost see her growing by the minute, as she shoots up and branches into a small cannabis tree in a short nine weeks.

The buds are heavy, dense and there are lots of them. They are also powerfully smelly, so don’t pick this strain if you are doing a stealth grow. The odor is pleasant, a nice blend of sandalwood and citrus, but it will stick to your clothes, your furniture and everything that enters your grow room.

Sweet Seeds bred this strain for yield, speed and vigorous growth, and they succeeded on all three. The high is not as euphoric or joyous as some of the other Jack Herer blends, but it is a nice relaxing hit that eases muscle tension and can help you unwind after a long day.

• Type Sativa, Indica, Ruderalis
• Height Medium
• Flowering time Finishes 9 weeks from seedling
• Awards won None
• Yield 400-600 g/m²
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level High

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Advanced Seeds Auto Jack Herer

• Green House Jack Herer Auto-Flowering Seeds

#5 Auto – Hijack Auto-Flowering Feminized Seeds

Best For: Small Size, Stable

This strain from Auto Seeds has Jack Herer and AK47 coupled with Ruderalis genetics. The result is a stable strain that is ready for harvest only 10 weeks after germination.

The shape of this plant is somewhat unique. It is very much a Sativa with tall, perfectly shaped flowers and an open structure, but it stays tiny, often under 2 feet in height. You can boost yields with LST or by adding side lights to maximize the production from side branches.

The buds are sticky with resin and have the characteristic lemon pepper scent of Jack Herer. Surprisingly, considering its parent plants, the high can be a bit slow to hit you. When it does it is predominantly a Sativa effect with a euphoric, peaceful mental stimulation. There is an underlying body buzz that balances it out and makes for an all-around pleasant smoking experience.

• Type Sativa, Indica, Ruderalis
• Height 40-70 cm
• Flowering time Finishes 10 weeks from seedling
• Awards won None
• Yield High
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level High

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Advanced Seeds Auto Jack Herer

• Green House Jack Herer Auto-Flowering Seeds

#6 AC Genetics – Turbo Jack Auto-Flowering Feminized Seeds

Best For: Motivating High, Small Size

AC Genetics crossed Quick Bud and Jack Herer to make this auto-flowering variety. Ready to harvest 10 weeks from germination, this is a great choice for beginner growers seeking the Jack Herer experience.

The high is energetic and motivational. It is great for daytime smoking as it will make you get up and get moving. Smoke it for a cheerful, creative day of action and productivity.

• Type Sativa, Indica, Ruderalis
• Height Small
• Flowering time Finishes 10-11 weeks from seedling
• Awards won None
• Yield 350-450 g/m²
• Feminized Yes
• Autoflowering Yes
• Growth difficulty Easy
• THC level 10-12%

For Similar Strains check out:

• Royal Queen Royal Jack Automatic Seeds

• Advanced Seeds Auto Jack Herer

• Auto Hijack Feminized Seeds

• Green House Jack Herer Auto-Flowering Seeds

Best Jack Herer Crosses

It comes as no surprise that a strain as delicious and famous as Jack Herer has been crossed with a wide variety of other strains. Here are a few of our favorite Jack Herer offspring.

#1 Sweet – Jack 47 F1 Fast Version Feminized Seeds

Best For: Fast Finisher

The fast line from Sweet Seeds contains non-autoflowering, feminized versions of their favorite strains that finish flowering in record time. The result is achieved by crossing an auto variety back to a photoperiod parent.

In this case, they used Jack 47 (Jack Herer X AK 47) and crossed it with Auto Jack 47. The result is a vigorously growing strain that is done flowering in 7 weeks. It produces a strong yield of resinous buds that have a crisp lemon/pine scent.

The effects are mostly cerebral and completely delightful. The high is peaceful, giggly and bright, perfect for relieving anxiety and stress or hanging out with friends. This is great weed for a night on the town or simply to cheer you up after a bad day.

• Type Sativa 75%, Indica 25%
• Height Medium
• Flowering time 7-8 weeks
• Awards won None
• Yield 500-600 g/m²
• Feminized Yes
• Autoflowering No
• Growth difficulty Easy-Moderate
• THC level 20%+

For Similar Strains check out:

• Dinafem Critical Jack Seeds

• Sensi Jack Flash Seeds

• Nirvana Jock Horror Seeds

• Royal Queen Royal Jack Automatic Seeds

#2 Sweet – Black Jack Feminized Seeds

Best For: Lazy High

A cross of Black Domina and Jack Herer, Black Jack is large plant with abundant lateral branching. Outdoors she can easily reach 10 feet in height. The colas are heavy and seem to drip resin thanks to the Indica influence of Black Domina.

The high is a lazy hybrid hit, with a buzzing body stone and just enough bright cerebral activity to keep you upbeat and a little social. You may find yourself involved in physical activity or just following bizarrely beautiful trains of thought.

This is a strain that has been garnering attention amongst the medical community for its combination of powerful physical effects and energizing mental edge.

• Type Hybrid
• Height Tall
• Flowering time 9 weeks
• Awards won None
• Yield 500-600 g/m²
• Feminized Yes
• Autoflowering No
• Growth difficulty Easy-Moderate
• THC level High

For Similar Strains check out:

• Dinafem Critical Jack Seeds

• Sensi Jack Flash Seeds

• Nirvana Jock Horror Seeds

• Royal Queen Royal Jack Automatic Seeds

#3 Sensi – Jack Flash Feminized Seeds

Best For: Easy Grow, Functional Hybrid High

As the name suggests, Jack Flash is Sensi’s easy-to-grow version of their famous Jack Herer. The strain produces two clear phenotypes: one Sativa dominant with a tendency to stretch during flowering, the other with an Indica style centralized cola and a fruity aroma.

Both phenotypes produce the same joyful hit. The high comes on fast and is a pleasing blend of euphoric cerebral activity and relaxing, muscle-easing body stone. This is not overwhelming weed. Even with the Indica influence, the body effects will not put you in couch-lock, so you can expect to stay somewhat functional.

This is another Jack Herer cross that is of interest to the medical community. It is a good social smoke that relieves nausea and physical pain while brightening your mood.

• Type Indica 55% Sativa 45%
• Height Tall
• Flowering time 7-9 weeks
• Awards won 2004 High Times Cannabis Cup 3^rd
• Yield 400 g/m²
• Feminized No
• Autoflowering No
• Growth difficulty Easy
• THC level High

For Similar Strains check out:

• Dinafem Critical Jack Seeds

• Sweet Black Jack Feminized Seeds

• Nirvana Jock Horror Seeds

• Royal Queen Royal Jack Automatic Seeds

#4 Delicious – Critical Jack Feminized Seeds

Best For: Flavor, Clear High

Critical Jack is a slow flowering strain that is worth the wait. The high is all joyful, trippy cerebral action with just enough physical impact to eliminate pain or tension.

There are three phenotypes of Critical Jack, two of which are stretchy Sativas and one of which is a shorter, bushier plant. One of the Sativa phenos and the Indica both flower more quickly than the 12-13 weeks listed.

The flavor of this bud is exceptional, with crisp citrus notes blended with a musky smoke.

• Type Indica 25% Sativa 75%
• Height Tall
• Flowering time 12-13 weeks
• Awards won none
• Yield 450 g/m²
• Feminized No
• Autoflowering No
• Growth difficulty Easy
• THC level 20%

For Similar Strains check out:

• AC Genetics Turbo Jack Seeds

• Dinafem Critical Jack Seeds

• Nirvana Jock Horror Seeds

• Royal Queen Royal Jack Automatic Seeds

What’s Next for Jack Herer

The original Jack Herer remains in high demand, and probably always will. Competing seedbanks continue to attempt to improve upon the strain, typically by adding Indica genetics in an attempt to make it a little smaller and a little faster during flowering. We will continue to see crosses of Jack Herer as well as new strains released with similar parentage. After all, Haze, Skunk and Northern Lights are classic strains for a reason. Their genes are strong and stable, and they are truly the foundation strains of hybrid cannabis breeding.

Conclusion

Don’t be too intimidated by the famous Jack Herer. Yes, the effects are powerful, but the high is such a bright, positive experience that you won’t be able to help yourself. You’ll be back for more.

In the grow room the biggest challenge is Jack Herer’s size. The plants are more tolerant of feeding and lighting errors than you may think. If you can find the space for these big beauties, or feel confident in your cloning and training skills, give Jack Herer a try. More than anything, this strain demands your attention. Be patient and observant, and don’t burn them with your lights, and you should be rewarded with a high yield of resinous buds that will blow your mind.