• Post last modified:February 7, 2022
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In this article we will answer two main questions, what is THC? And what are the highest THC strains of 2021?

THC is an abbreviation for Tetrahydrocannabinol, which is among the common chemical compounds found in cannabis. THC is typically found in the cannabis plant’s resin gland. 

The National Institute on Drug Abuse (NIDA) indicates that THC is similar to the natural cannabinoids that our bodies produce. This cannabinoid is psychoactive, meaning that if you take it, it will influence you psychologically. The cannabinoid receptors in our bodies can communicate with specific areas of our brains responsible for producing pleasure, thinking, and storing information. Additionally, it has an effect on recognizing time and body coordination. THC offers this effect by binding itself to these THC receptors in the brain. 

When this cannabinoid binds itself to the receptors, it produces dopamine, providing a calming effect on the body. Additionally, THC plays a part in altering the hippocampus, a part of the brain responsible for your memories. Additional effects of THC on your body are feelings of tachycardia, joy, and anxiety. In particular, if you seek a sedative effect and feelings of pain relief and relation, THC is suitable for your consumption. Although excessive consumption of THC may cause toxicity, its moderate use results in significant benefits for your body. 

What are the 10 highest THC strains of 2021?

Gorilla Glue 4

Gorilla Glue 4 is one of the most potent weed strains in the world. Despite being first created in 2014, Gorilla Glue still makes it onto our highest THC strains 2021 list. With a THC level of 28% this hybrid strain is a product of Chocolate Diesel, Chem Sista, and Sour Dub. This cannabis strain has thick buds filled with resin, which becomes even more evident when it is being trimmed. One’s fingers will be full of a sticky glue-like substance, which is majorly THC. Most of its attributes are from the Chocolate Diesel, one of the parent strains. Its seeds germinate and grow quite easily, and it does well in warm environments.

Most of the Gorilla Glue 4 plants are quite tall and grow up to between 180 and 200 centimetres, with dense buds covered with trichomes rich in THC. As we said earlier, this strain does well in warm temperatures, between 75 °F and 80 °F. The strain has a strong earthy and sour aroma that lingers long after use. 

How does it affect your body? Now, given the higher THC levels, the consumption of this strain will produce considerable effects. You will feel uplifted and euphoric, helping you forget your day’s stress, making it good for people suffering from insomnia, depression, chronic pain, and anxiety. However, if you are a novice user, you may need to consume it moderately because it can easily cause adverse effects, such as intoxication.

Bruce Banner

With THC levels ranging between 24% and 30% Bruce Banner is without a doubt up there with the highest THC strains 2021. It also has a significant amount of CBD, making it a good choice for medicinal use. The parent strains for this hybrid cannabis are OG Kush and Strawberry Diesel. As a result, this strain provides a blissful experience. 

Bruce Banner 3, which grows up to 3 meters long, especially in an open environment, has long and thin buds with bright, large, and slender leaves. The hybrid strain has a visual appeal, which is enhanced by its frosted trichomes. The plant produces a pungent earthy and diesel smell as it grows. It maintains its signature smell even after harvesting, drying, and curing the plant. Its flavor also resembles its smell but with some sweet traces during smoking. 

The Bruce Banner 3 is on-demand because it brings about positive vibes, laughter, and joy. Immediately after your initial puff, you will experience an increase in your mood and energy levels, and for several hours, you will remain open to interactions and motivated. Therapeutically, it is good at pain-relieving and dealing with mental problems such as anxiety, PSTD, stress, and depression. 

Girl Scout Cookies

This strain is a product of sought-after Durban Poison and the famous and highly potent OG Kush. The best part about this hybrid is that it inherited the best qualities from the parent strain, making it one of the cannabis types high in demand. While the plant possesses both Sativa and Indica genetics, Indica takes dominance. The plant has a high level of potency, with the THC levels ranging between 20% and 27% making it one of the strongest weed strains known to man. Thanks to its significant favor profile, effects, and potency, Girl Scout Cookies has bagged several awards between 2013 and 2016. 

This strain grows into medium plants with several branches. While the leaves are small in size, the buds are covered with THC-rich trichomes. 

Its unique aroma and flavor are among the several reasons this strain is famous among users. Its smoke smells like a baked product, fresh from the oven, with the user experiencing peppermint, zest, and lemon flavors during inhalation. As you exhale, expect a sweet and earthly taste, which lingers several hours after smoking. 

This strain is famous for its relaxation effects. It begins with the user experiencing a cerebral high that is followed by an intense body stone. Girl Scout Cookies strain is also good in boosting appetite for undergoing some treatments such as radiotherapy and chemotherapy. It is also good for pain treatment and inducing sleep.

Do-Si-Dos

This Indica dominant strain is among the most potent weed strains, with its THC levels ranging from 25% to 30%. However, its CBD levels are quite low: less than 1%. Do-Si-Dos is a product of the famous Face Off OG and Girl Scout Cookies. Thankfully, it has inherited the best traits from the two parents. First, it got its delicious and desert-like taste from the legendry Girl Scout Cookies and the sedating Indica features from the famous Face Off OG. 

Growing this strain is quite easy because it doesn’t require intensive attention and care. It is resistant to common diseases and plants and can grow well in both indoor and outdoor environments. 

This strain possesses a pungent, floral, sweet, citrus, and earthy scent. Once you take the first puff, you will experience the effects immediately, leading to sudden increases in your motivation and energy levels. You will feel happy and uplifted as you consume the strain. As you keep puffing, you will experience sedative numbness that keeps you under couch-lock. Its great taste makes it one of the most sought-after strains. It is also used for medical purposes because of its anxiolytic, antidepressant, and analgesic properties. Consequently, it is good for anxiety, depression, and pain. 

Skywalker OG

New on our list of the highest THC strains 2021 is Skywalker OG. A product of crossbreeding Blueberry and Mazar Sharif. It possesses a balanced ratio of Indica and Sativa genetics, with its THC levels recorded at 25%. We still don’t know the full potential of Skywalker OG, however what we do know is that it is one of the highest THC strains you are likely to smoke. The Skywalker OG is quite aesthetic and can cause a sedating body melt, enhanced moods, and better focus. It is quite easy to grow. So, if you are a beginner grower, you may choose it, especially if you want to grow your weed indoors. 

Its signature blueberry, fruity, and sweet smell is pronounced and makes it a popular strain among users. The mouth-watering flavor keeps the users anticipating to smoke it. Its effects are almost instant because once you consume it, you will experience excitement, euphoria, and enhanced focus with the first toke. Who doesn’t like that experience? If you need some relaxed sleep, you may puff much more. A sedating body high will take over, leading to some feeling of laziness and finally sound sleep.

Is it valuable for medicinal use? Yes. Given its relaxing and soothing effects, it can be used by patients with insomnia, anxiety, bipolar disease, and ADHD. The strain is good for relieving chronic pain. 

Gelato

This is a child of Sunset Sherbet and Thin Mint Girl Scout Cookies. It is one of the most potent weed strains, with its THC levels ranging between 20% and 27%. Given the high levels of potency, individuals with low levels of THC tolerance, especially the newbies, should consume it moderately and cautiously. This strain also has an impressive terpene profile, packed with terpenes such as Myrcene, Caryophyllene, and Limonene. However, if you are a novice grower who intends to cultivate this strain, Gelato should not be on the list of your choices. It requires significant attention during its growth and development. 

Gelato has a sweet flavor characterized by blueberry and sherbet flavor once you inhale it. Its great aroma can easily deceive to overconsumption. Even if you are an experienced consumer, you should be cautious because it can easily overpower you if you consume in large doses. 

After the initial puff, you will immediately experience a cerebral buzz in addition to a body-centered high. Your worries will be replaced with happiness and optimism, which can last for several hours. If you need to consume it for medical purposes, it helps relieve pain resulting from backaches, headaches, arthritis, and spasms. Additionally, Gelato helps deal with stress, anxiety, and depression. 

Runtz

Runtz is a hybrid product from the crossbreeding of the two high THC strains, Gelato and Zkittlez. This strain has a THC level ranging between 22% and 26%, meaning that it can result in great psychoactive effects. For anyone seeking a combination of both the Sativa and Indica highs, this is the best choice because the Indica: Sativa ratio is 55:45. If you are an amateur grower, you should go for this strain because it is easy to grow. It produces tightly packed and dense buds that are highly aesthetic. 

It has a great smell that does not disappoint the users. Its inviting sugar and sweet scent with traces of fruit, citrus, and berry will make you want to keep smoking it over and over. If you have a sweet tooth, then Runtz got you covered. Thanks to its candy-like flavor, this strain will satisfy your sweet tooth. Given its great smell and flavor, overconsumption is pretty easy because you would want to have more. 

Following the initial puff, you will experience a cerebral feeling that will keep you happy, uplifted, and excited. Later, you will experience a feeling of relaxation. For medical use, this strain contains analgesic, antidepressant, and antiemetic properties. 

Sunset Sherbet

The parent strains for this hybrid cannabis are Pink Panties and Girl Scout Cookies. Given that one of the parents of Sunset Sherbet is among the strongest weed strains, Girl Scout Cookies, it then goes without saying that the offspring is a high THC strain. Sunset Sherbet is an Indica dominant strain with a THC level of 18% to 23%. The best part about this strain is that both experienced and new consumers can use it because of its above-average potency. Additionally, this breed is easy to grow with low levels of attention. 

The strain is characterized by an appealing smell of earthy sweetness, fruits, and berries. Its delicious fruit and berry taste lingers long after smoking it. While it is Indica dominant, Sunset Sherbet its effects are largely sativa. Its high is characterized by enhanced creativity, high motivation, and elevated moods. Less likely effects resulting from the presence of Indica influence are drowsiness, couchlock, or sedation. The common effect due to Indica is full-body relaxation. For medicinal purposes, Sunset Sherbet is a perfect choice for mood disorders, pain eating disorders, and nausea. 

Mimosa

Another new strain that makes it onto our highest THC strains 2021 list is Mimosa. This strain is physically appealing with round, dense and medium-sized nugs. The strain is more Sativa-dominated, with Sativa making 70% of its genetics. It’s highly potent, and its THC levels are 25% to 30%. The hybrid is a product of crossbreeding delicious Clementine and Purple Punch Strains. Some of the most potent weed strains belong to the same family as this strain. They include the Larry OG, Lemon Skunk, Granddaddy Purple, and Tangie. Mimosa, like the other strains in the same family, is good if you need a nice deep sleep. 

Apart from being among the high THC strains, Mimosa is popular for its appealing and highly desirable terpene profile. As a result, the strain releases an enticingly sour and sweet aroma. The aroma is so powerful and appealing that as soon as you break the bud down, it will hit your nose and leave you wanting to consume a bit of it. Once you exhale it, you will recognize some traces of berry, making it one of the most palatable strains. 

Mimosa will give you an instant cerebral effect, making you social, focused, and happy, with occasional giggles and smiles. The strain is also good for individuals with ADHD and fatigue because of its ability to promote focus, creativity, and energy.

How do you increase THC when growing cannabis?

When you are growing weed it can be a fine line between harvesting mediocre weed and excellent high THC weed. To really get the most out of your plants when you are growing high THC strains following these simple rules will help you grow some of the most potent weed you have smoked.

Choose a strain from our highest THC strains 2021 list

It may sound obvious but to grow potent weed make sure you choose one of the highest THC strains from our list above. Around 50% of the outcome comes from the genetics, so choosing the right strain gives you a great starting point.

Learn how to time your harvests to produce the strongest weed

Lots of growers rush the harvest stage because they are too eager to sample their produce. The trick is to be patient and check your trichomes daily with a magnifying glass or jewellers loupe. Wait until around 70 – 90% of your trichomes have turned a cloudy white colour, this is when the weed is most potent and should be harvested.

A healthy plant = High THC weed

Make sure your plants are healthy and have the best growing environment possible to produce high THC weed. Easily avoidable mistakes such as under and over watering, nutrient burn, mold, bud rot and heat stress will all impact on the potency of your bud. Keep tabs on your grow and closely monitor the grow room climate, air circulation, temperature and appearance of the plants. This will give you a good indication if anything is going wrong before it impacts the grow too much.

Use good quality lights

I am a firm believer that you can’t beat mother nature, but if you are growing indoors then invest in a high quality set of grow lights. Not only will good quality lights increase yield but they will also allow you to grow high THC weed.

Light is like food for cannabis plants so use a good quality HID or LED light to give yourself the best chance of growing the highest THC strains.

Lets move on to 2022

Finally now that we are starting a new year why not try growing some of our the highest THC strains 2021, and we will have a new list of the highest THC strains of 2022 coming soon.

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