Jack Herer: Tips for Growing Cannabis

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Experts recommend that when cultivating your favorite marijuana strain, you follow their advice. The techniques and recommendations they provide might be the difference between failure and success. Try another sativa-dominant hybrid like Kandy Kush.

Unfortunately, the bad news is that even experienced growers have a hard time growing the Jack Herer strain. In other words, it might be nearly impossible to cultivate.

Jack Herer’s strain is named after him, as it was created in his honor. The Emperor Wears No Clothes is a classic book by Jack Herer that explains the absurdness of cannabis prohibition and describes hemp’s many applications. Many other activists have been inspired by the work, including marijuana kingpins like Ed Rosenthal and Steve DeAngelo.

In 1994, a Dutch cannabis breeder developed this well-known combination in the Netherlands. Dutch pharmacies later offered Jack Herer as a high-grade medical strain. It’s a cross of indica Northern Lights#5, Shiva Skunk, and sativa Haze plants genetically.

The Jack Herer strain is known for its extremely high THC levels: up to 24% THC and up to 2.2 percent CBG, which is quite unusual.

The Jack Herer is a unique variety with seven High Times Cannabis Cups victories. It’s a bit sativa-dominant hybrid with THC levels up to 24%; therefore, it might be too powerful for novices.

The Jack Herer strain provides a bright and uplifting, euphoric high that should not be overwhelming for experienced users. The cerebral effects, combined with the energy boost, ensure that you won’t end up on the couch. It also features up to 2.2% of the cannabinoid CBG, which is uncommon in marijuana strains. Jack Herer is mostly used for medical purposes such as migraines, Post-Traumatic Stress Disorder (PTSD), and depression.

In this Jack Herer tribute guide, we provide eight pointers to assist you in remembering an icon.

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Growing Jack Herer Tip #1 – Try a 12/12 Lighting Schedule

Although we don’t suggest it, this technique has proved to be beneficial by many growers. During the vegetative stage, getting as much light as possible is usually a good idea. A lot of growers aim for 18 hours of sunshine each day. Some marijuana cultivators, on the other hand, expose their plants to 24 hours of light while others keep them in artificial lights for an extended period. Typically, when the plant is ready to flower, growers use a 12/12 lighting regime.

The Jack Herer strain may be enormous when cultivated correctly! We’re talking about “too big to fit in an indoor grow room” territory. If you don’t have enough space for your plants indoors, try a two-week vegetative stage and skip to flowering right away. It’s not something you’d want to attempt on a regular basis, but it IS possible to produce Jack Herer from seed this way.

Remember, most sativas are equatorial, so they seldom see more than 12 hours of light. The Jack Herer plants will develop a huge central cola under a 12/12 schedule. They’ll also have little side branching. Keep in mind that the majority of the plant’s weight is concentrated in the main cola, and side branches produce tiny buds.

If you grow Jack Herer in this manner, the lower branches will develop excellent buds. You will undoubtedly have to yield and plant smaller plants as a result of this technique. When you get rid of the vegetation phase, you gain more yearly harvests.

Growing Jack Herer Tip #2 – Remember, Yield Varies Depending on the Phenotype

Jack Herer, for example, is a strain with numerous phenotypes. Each has its own set of features. While the most prevalent phenotype is sativa-dominant, indica-dominant versions are also available. Indica phenotypes produce greater yields than sativa ones because to their sativa counterpart’s tendency to generally only produce low to moderate quantities.

When cultivated indoors, the yields range between 16 and 18 ounces per square meter planted. When grown outside, you may expect up to 18 ounces a plant, with harvesting beginning in late September. A producer who has been growing using the 12/12 lighting regimen from the start informed us about his results.

At the end of his first growing season, he had 14 ounces. The main problem was the wide yield difference between plants, owing to the different phenotypes utilized. While the weakest plant yielded about two ounces, the biggest one produced four ounces.

He couldn’t adequately feed the plants at one point during the cycle, which is certain to have had an effect on yield. Jack Herer’s propensity to develop too quickly also emerged at this time. The plants advanced towards the lights and were distressed as a consequence. The foliage of the cannabis plants restricted the fan’s airflow, thus overall production should be expected to improve when growers tend to Jack Herer on a regular basis.

Growing Jack Herer Tip #3 – Don’t Underestimate Flowering Time

Jack Herer’s flowering time is 8-9 weeks on average, but it can be much longer in some circumstances. Because it may take longer than expected for your plants to develop, the first two weeks are vital. growers may finish the vegetative stage as soon as they’re ready to alter the light cycle. Simply give your plants two weeks in the vegetative state and get ready to push them into bloom.

Jack Herer plants can reach 16 inches in a few weeks after they sprout their pre-flowers. Make sure you inspect the lighting on a daily basis during this critical period because these plants bloom once they begin to move! You may need to remove some lower branches on the lower nodes by the third week of flowering to ensure that sufficient light reaches lower buds.

By the time the blooms are blooming, your plants may be up to three feet tall. It’s also possible that one of your plants will grow quicker than the others. If this occurs, super-crop it to level out the canopy. It’s probably a good idea to upgrade your lighting by the middle of the flowering period.

During the following weeks, your plants will develop and produce plump, firm, and large buds. The majority of Jack Herer plants reach four feet indoors. Wait at least 70% of the pistils have changed color before harvesting as usual.

Growing Jack Herer Tip #4 – Consider Side Lighting for Your Jack Herer Grow

You’ve decided to cultivate Jack Herer using a 12/12 lighting schedule. However, you’re concerned about the prospect of only generating a poor return. Then, when growing Jack Herer indoors, consider adding side lighting. It’s clear that it’s designed to be used as an indoor crop because marijuana plants have a triangular shape as a result of outdoor light exposure.

The sun rises low on the horizon, its rays are directed straight down at around midday, and it slowly sets. The difficulty is that side light assumes indoor cannabis will react in the same way. Natural selection, by contrast, is incredibly robust.

Cannabis is designed to ‘die’ once its function has been completed. When a female plant is pollinated, seeds are produced, and the crop is propagated, this is considered successful. It gets sexually agitated if it isn’t pollinated, resulting in fatter buds.

Female marijuana plants shoot their flowers as high as possible to improve pollination chances, which is why you’ve probably seen them do it. The top and outer buds are valued. Training methods like topping can help create two major colas. As a result, if you only utilize side lighting, your Jack Herer cannabis will have huge and fat top colas, but the interior and lower buds will remain tiny. That’s how cannabis grows; side lighting doesn’t change that behavior.

The yield of cannabis plants grown under side lighting may be increased by 20% if you add side lighting to your regular lighting. You must have complete control of your cultivation environment for side illumination to be useful. It’s also worth experimenting with training methods before investing in side lighting.

Growing Jack Herer Tip #5 –Training Techniques


jack herer marijuana strain 02 509x400 - Jack Herer: Tips for Growing CannabisTraining methods are used to maximize horizontal growth and overcome the primary stem’s dominance, allowing for more buds to receive light. When properly implemented, these procedures may result in even bushier Jack Herer plants with more colas. Here’s a brief rundown of three training modalities:


TECHNIQUELow-Stress Training (LST)

Shoots should be bent outwards and away from the plant’s main stem. Most cultivators bend their plants into a cannabis bush, although expert growers may take advantage of this opportunity to flex their creativity.

Screen of Green (SCROG)

You may take advantage of the screen to improve your plants’ yield by setting it up near to where you plan to grow your cannabis. You can train the tops of your plants by adding a screen close to your lights in order to expose more buds to light. For each plant, you should add 30 cm of screening. After your plants have grown through the screen, remove it and tie their branches down again. To ensure that your buds get all they need, you may also eliminate big fan leaves.


The goal of pruning the main stem’s growing tip is to shape it. This is a high-stress training (HST) technique that attempts to stimulate new growth in areas with little sunlight. When you chop off the terminal bud, two additional colas are formed and growth down the plant’s trunk is enhanced. Make careful not to use unclean scissors when conducting the main stem’s tip cut.

Growing Jack Herer Tip #6 – The Best Nutrients for Feeding

Fertilizers come with a N-P-K number on the front of the package. It shows you the ratio of nitrogen (N), phosphorus (P), and potassium (K). When it comes to marijuana plants, they usually require more nitrogen during the vegetative stage and more of the other two nutrients when flowering.

Because it isn’t a plant with leaves, Jack Herer is somewhat different. As a result, it requires less nitrogen than other plants on average. A 3-3-5 fertilizer is suitable when the buds get bigger. Overall, there isn’t a distinct nutrient for each strain when growing marijuana; instead, you should use more or fewer nutrients to achieve maximum growth.

It’s a mistake to forget about other essential elements like sulfur (S), calcium (Ca), and magnesium (Mg). Only a small percentage of farmers, particularly first-timers, ever have to worry about nutrient insufficiency. Nutrient burn is another issue entirely (the practice of feeding plants too many nutrients). Use as little as 25% of the recommended dosage when purchasing fertilizer; work your way up gradually.

Growing Jack Herer Tip #7 – Flowering Outdoors

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Jack Herer is a behemoth when cultivated outside. When it isn’t confined to an indoor grow room, it quickly grows to enormous proportions. The main problem is finding the proper growing conditions. For the record, Jack Herer thrives in a moderate climate with temperatures ranging from 70 to 85 degrees Fahrenheit.

If you live in ideal outdoor conditions, you won’t have to give the same level of control as if you were growing Jack Herer indoors. Because nature intended, your Jack Herer plant will soon adjust to daylight changes. They should be able to bloom on their own at some point. The plants are exposed to enough darkness throughout the fall months that they can transition into the flowering stage.

Of course, if you have the time, you may support as much vegetative development as feasible. However, when the weather gets colder, you must be cautious because your plants will not grow properly.

If you need your plants to bloom outdoors quickly, here’s a trick. To block out the sun, use a polyethylene sheet or even construct a screen. Remember that in order for your plants to enter flowering mode, they need 12 hours of uninterrupted darkness for 1-2 weeks.

Growing Jack Herer Tip #8 – Keeping Pests at Bay the Natural Way

Indoor growers are not immune to the pests’ effects, but outdoor growers must be more cautious. Nobody wants pesticides sprayed on their plants. Fortunately, there are several innovative techniques for preventing pests from spoiling your crop without resorting to pesticides.

Option #1 Introduce Natural Predators

Insects like aphids, spider mites, mealybugs, and whiteflies are only a few of the creatures that might ruin your efforts. Introduce natural predators to help control the pests on your behalf as one method to address the problem.

Although they aren’t harmful to your cannabis plants, ladybugs are excellent because they either destroy or repel a wide range of pests while not consuming them. Introduce a few into your yard and watch the effect. They’re particularly beneficial if you have spider mites problems.

Option #2 Grow Companion Plants

If you don’t want to add more animals to your yard, consider companion planting instead. Several plants serve as pest repellents; place them near your marijuana plants. Garlic cloves, for example, repel potato bugs, beetles, spider mites, and aphids. Animals such as deer and rabbits will occasionally visit to devour your vegetation, but guess what? They despise garlic as much as you do!

Some farmers have faced difficulties with flea beetles. Introduce a touch of mint to combat this problem! Mint is also effective at repelling flea beetles, as well as a variety of other insects and mice, due to its beautiful scent and effectiveness in repelling them.

Plant marigolds and geraniums in your cannabis garden if you like flowers. To make their lives easier, some growers put geraniums in pots. Marigolds have a quick growth rate, which is one of their advantages. You can plant them in the ground and expect them to produce a strong scent within days that keeps pests at bay. One of our readers, though, claims that marigolds attract spider mites, so keep this in mind.

We hope this information was useful to you, and that if you decide to cultivate Jack Herer, all of the suggestions will come in handy. Have any input or personal knowledge regarding cultivating Jack Herer? Make sure to leave a remark below!

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