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Harlequin strain

Harlequin strain guide. Closeup of marijuana plant.

If you love to consume CBD-rich whole-flower, check out our Harlequin strain overview.

What Is the Harlequin Cannabis Strain?

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Harlequin is a sativa-dominant, high-CBD strain descended from landrace strains. The result of its hardy genetics produces buds with balanced, relaxing, and clear-headed effects. Harlequin has gained popularity among cannabis consumers for its unique cannabinoid profile and balanced effects.

A unique balance of CBD and THC concentration allows you to feel calm with a slight buzz that won’t weigh you down.

Often referred to as harlequin CBD or the harlequin CBD strain in the CBD community, this strain is well-known for its well-rounded effects and medicinal benefits.

A close-up image of the Harlequin cannabis strain showcases its vibrant green buds, adorned with orange hairs and a frosty layer of trichomes. This sativa dominant strain is known for its high CBD content, making it a great choice for cannabis consumers seeking relief from chronic pain and anxiety while enjoying its therapeutic benefits.

Harlequin is an ideal strain for first-time users or those who prefer CBD-rich strains. The balance of cannabinoids avoids overwhelming novice users or those who need to be productive during the day, making Harlequin perfect for daytime use due to its clear-headed and non-sedative effects.

Generally, Harlequin has a 5:2 ratio of CBD to THC. Analytics labs have measured samples of Harlequin and reported samples between four to 10 percent THC and six to 15 percent CBD. Harlequin is classified as a marijuana strain due to its THC content.

Average CBD level: 8.5 percent

Average THC level: 5 percent

Terpenes: Myrcene, Pinene, Caryophyllene

Awards: 3rd Place in the CBD Flowers category – Highlife Cup 2019

Harlequin’s genetic background includes diverse parent strains, with sativas like Swiss and Thai contributing to its uplifting effects, flavor, and appearance.

Strains similar to Harlequin:

Harlequin Strain Genetics

Harlequin strain gets its prized genetics from its parent strains: Colombian Gold, a Nepali indica, and Thai and Swiss landrace strains.

The Thai and Swiss landrace strains are sativas, which contribute to Harlequin’s sativa-dominant profile. Legend has it that the strain was initially bred by Mr. Green from the House of David Collective.

Mr. Green had his sights on breeding a THC-rich plant to make hash and concentrates, but ended up producing a sativa-dominant strain renowned for its high CBD content.

Aroma

Harlequin’s complex and subtle aroma has herbal, pine, peppery, and sweet notes. When smoked, the unique flavors and aromas of Harlequin become especially pronounced, with musky and mango undertones coming to the forefront.

Unleash these inner musky and mango flavors using a portable or desktop vaporizer to consume your buds. Its sweet and syrupy flavors will leave you wanting more.

This strains most common terpenes include the following:

Myrcene is one of the most concentrated terpenes among cannabis strains. You can’t miss its spicy and peppery aroma, also found in mangoes, thyme, and lemongrass.

Myrcene is thought to be responsible for analgesic and anti-inflammatory effects.

Pinene smells like Christmas. A distinct piney aroma is commonly found in terpenes and can be used for anxiety, inflammation, and pain. Pinene-rich strains include OG Kush, Haze Berry, Remedy, and God’s Gift.

Caryophyllene has a blend of earthy, musky, and citrus notes that can also be found in black pepper, cinnamon, and cloves. Caryophyllene is believed to have antioxidant and anti-inflammatory properties and could help reduce depression and anxiety.

The strain helps with appetite stimulation, making it advantageous for those needing an increased sense of hunger.

Harlequin Strain Effects: What Consumers Report

Harlequin’s effects are invigorating and mood-boosting. Consuming this high-energy sativa can leave you feeling alert and concentrated on the task at hand, while also enhancing focus, making it suitable for activities that require mental clarity.

Harlequin provides a gentle body high that relaxes the body and soothes muscles without causing sedation, making it effective for relieving muscle tension.

Users often experience a clear head high, allowing for mental clarity, social interaction, and relief from stress without feeling overly sedated.

Harlequin has won fans around the world for its ability to provide relaxation without sedation, and it may help individuals manage social anxiety due to its calming and clear-headed effects.

Its CBD-rich trichomes are beloved for their effectiveness as a medical treatment for chronic pain, anxiety, and other conditions, highlighting its broad medical benefits. CBD can provide non-intoxicating relief without compromising its analgesic properties, and Harlequin is often selected by users seeking specific desired effects, such as relaxation, relief from discomfort, and mood enhancement without intoxication.

This strain is also known for alleviating both physical and mental discomfort, promoting relaxation and physical ease.

Feelings: Relaxed, Happy, Uplifted, Focused, Energetic

Harlequin Products: Whole-Flower, Cartridge, Pre-Roll, Isolate, Shatter

Those with a brown or green thumb can easily grow the Harlequin strain. Buy feminized seeds online or clones at a dispensary nearby. Growers recommend planting this strain early in the planting season due to CBD’s quicker deterioration rate compared to THC.

Under optimal growing conditions, Harlequin weed can produce tall plants, a high yield, and large colas with bright orange-and-red pistils. The plants respond well to training to maintain proper airflow in the canopy. It can grow in soil or hydroponic mediums.

This strain can grow indoors or outdoors and prefers temperatures between 72º and 85º F. This sativa-dominant strain can handle high humidity levels as long as you ensure there’s a good airflow between plants and branches, which may need support due to the size of the buds.

Growing Difficulty: Easy-Moderate

Plant Height: 78 inches+

Flowering Period: 7-9 weeks

Yield: 3-6 ounces per square foot

Check out our blog post on how to maximize CBD production during its growth cycle. This CBD-rich strain, in particular, has a longer-than-normal drying time for cannabis that can last up to three weeks compared to the average of seven to 10 days due to its heavy and frosty resin. For best results, you’ll also want to learn about the decarboxylation process to activate the CBD in your harvest.

Growing and Cultivation

Cultivating the Harlequin cannabis strain is a rewarding experience for growers seeking a sativa-dominant hybrid with high CBD content and low THC levels. This strain thrives in warm, sunny environments with well-draining soil, making it an excellent choice for both indoor and outdoor cultivation.

Thanks to its robust genetics, inherited from landrace strains like Colombian Gold and Nepali Indica, Harlequin is known for its resilience and adaptability, allowing growers of all skill levels to achieve impressive results.

For indoor growers, Harlequin responds well to regular pruning and training techniques, which help promote airflow and encourage lateral branching. This not only minimizes the risk of negative effects like mold but also boosts overall yield.

Expect a flowering period of about 8 to 9 weeks, with harvests ranging from 350 to 450 grams per square meter. Outdoor cultivators can look forward to harvesting around mid-October, with yields reaching up to 500 grams per plant under optimal conditions.

Achieving the perfect balance of high CBD and low THC levels requires careful attention to environmental factors such as temperature, humidity, and light exposure. By maintaining these conditions, growers can maximize the strain’s therapeutic benefits, producing cannabis products that deliver clear-headed effects and potent relief from chronic pain, muscle spasms, stress, and anxiety.

Harlequin’s analgesic properties make it a great strain for medical cannabis patients seeking relief from various medical conditions without the intense psychoactive effects often associated with other marijuana strains.

The dominant terpene in Harlequin, myrcene, contributes to its relaxing and calming effects, while the strain’s unique terpene profile imparts a sweet, fruity scent and a smooth smoke.

These characteristics, combined with its balanced hybrid genetics, make Harlequin cannabis a standout choice for those seeking relief from conditions like Crohn’s disease, nausea, and appetite loss.

Closely related to other sativa-dominant strains, Harlequin delivers a bountiful harvest and a wealth of therapeutic benefits when cultivated with care.

Similar strains, such as Stephen Hawking Kush and Ringo’s Gift, offer their own advantages, but Harlequin’s high CBD content and balanced THC ratio set it apart as the perfect strain for both medical and recreational cannabis consumers.

Whether you’re a seasoned grower or just starting out, cultivating Harlequin allows you to make informed decisions and enjoy the many benefits this exceptional strain produces.

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Jeff Zorn, founder of Cannabis Training University

Jeff Zorn

Jeff Zorn is the founder of Cannabis Training University (CTU), an online cannabis school with 50,000+ students since 2009. CTU is an IACET Accredited Provider, and its courses cover cannabis cultivation, business, medical cannabis, budtending, cooking, extraction and industry regulations. Jeff focuses on breaking down complex cannabis topics, like cannabinoids, terpenes, growing techniques and legal frameworks, into clear, practical guidance readers can apply right away. His articles are written for beginners, entrepreneurs and professionals who want to understand cannabis and make informed decisions. He regularly publishes educational articles on cannabis science, cultivation methods and industry changes, with an emphasis on real-world application, responsible use and staying current in a fast-changing market.

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