7 Blue Weed Strains You Must Know and Grow

Few buds catch the eye the way blue weed strains do. When covered in glistening trichomes, the aesthetics seem like an image from a fairy tale. 

So, where do these brightly-hued buds come from? 

They result from a strategic combination of specific genetics and planned temperature drops. The first successfully bred blue cultivar came about in the 1970s, giving rise to a new type of cannabis that remains popular today. 

Eager to discover more about these beautiful blue marijuana strains? Keep reading! 

Learn all about their genetics, flavors, and effects. We look at some of the best strains in this category and some high-yielding varieties to keep your stash filled.

Let’s kick things off by discovering if real blue weed exists. 

Are there any blue strains of weed? 

As mythical as photographs of these nugs seem, they do exist. All blue cannabis descends from a single genetic line but requires specific growing techniques to develop the stunning color. 

But where do these gorgeous cultivars come from? 

Their history dates back to the 1970s when DJ Short created a new type of hybrid in the Netherlands called Blueberry. It gained popularity in 420 circles and even went on to win the 2000 High Times Cannabis Cup. 

What causes weed to turn blue?

Some cultivars produce buds with blue shades because of flavonoids called anthocyanins. You find these in all cannabis plants, but some strains have higher content. 

The flavonoid pigment acts as a protective measure for the buds and foliage against the sun’s UV rays. 

During the early growth phases, you can’t tell the difference between regular green cannabis and a blue weed strain. Chlorophyll (the green pigment) is abundant in these stages. 

The blue hues typically occur during the flowering phase when the crops experience the ideal environmental conditions. 

In crops with high levels of anthocyanins, you can trigger them by lowering the temperatures in your grow area. The cold slows down chlorophyll production and allows the blue shade to shine through.

Blue weed strains genetics 

What genetics does the Blueberry strain have? 

Many believe that this original blue marijuana strain is a blend of Thai and other landraces. Over time, Blueberry became a popular choice for crossbreeding to create new hybrids. 

Each cultivar is unique, but descendants of Blueberry produce buds with similar pretty shades. They also contain many of the same terpenes and have delectable scents.

What are the blue weed strains effects?

Blue strains of weed don’t all have the same effects. They each contain different compounds and affect the user in varying ways. Even tokers who indulge in the same strain may not experience the sensations equally.

Another factor is whether the cultivar is indica or sativa dominant. The former induces uplifting, energetic sensations, while the latter is ideal for unwinding. There are certain common effects that blue strains share. These include:

• Euphoria 
• Relaxation 
• Calm 
• Happiness 
• Positivity 

Blue cannabis main reported flavors

There’s no specific blue weed flavor. Just like the uniqueness of the effects, these differ from one blue strain weed to the next. The quantity of each terpene and how it blends with other compounds determine the cultivar’s profile. 

Since these aesthetically pleasing crops all come from a single genetic line, there are a few shared flavors. These are sweet notes reminiscent of blueberries and similar fruits. 

What are the 7 top blue cannabis strains?

When it comes to weed strains, blue varieties tick all the boxes in terms of appearance. But which options top the list? Discover seven of the best below. 

Blueberry 

The original blue cultivar has to top the list. A blend of Thai, Purple Thai, and Afghani, it’s indica-leaning and contains 15–24% THC. The CBD levels are low, typically below 2%. The mother of all blue cannabis packs a punch and delivers incredible effects.  

These buds exude sweet fruity aromas that entice you to taste them. Upon inhaling, you taste berries and pine. The flavors get more complex as the smoke hits your lungs and floral notes come to the fore. On the exhale, you taste vanilla, wood, and hints of earth. 

The effects are hard-hitting, delivering a cerebral buzz after one or two tokes. Beginners need to take it easy, and even veteran smokers may want to limit their dose. 

At first, this blue marijuana makes you feel uplifted and euphoric with a heightened sense of self-awareness. Soon, feelings of relaxation hit, and your limbs soften.

Cultivating the Blueberry strain is fairly easy, especially if you opt for the feminized variety. These crops take 7–10 weeks to flower and produce attractive yields. These are typically around 18 oz./m² indoors and 25 oz./plant outside. 

Blue Cheese 

A well-known blue marijuana strain is Blue Cheese. The cultivar is indica-leaning and stems from the union of Blueberry and UK Cheese. The THC levels range between 16–20%, and the CBD content is negligible. Buds boast attractive green, violet, and yellow hues with glistening trichomes. 

The scents are fruity with strong cheese notes, reminding you of a delicious charcuterie board. Take a puff to reveal the true complexities in the strain’s terpene blend. Your taste buds revel in a variety of sweet and savory complimentary flavors. 

When you inhale, the blue marijuana tastes like berries and grapes. The cheese flavor follows shortly. As you exhale, they fuse to leave you with a mouthwatering aftertaste.

The effects creep up slowly, giving your mind and body time to adjust to the THC injection. The high is calming and uplifting, instantly boosting your mood as waves of euphoria wash over you. The tranquil sensations may lead to sleepiness.

Cultivating Blue Cheese is straightforward, and it’s available in feminized and autoflower varieties. The feminized blue cannabis takes 9–10 weeks to flower and yields around 17–19 oz./m² indoors and 21 oz./plant in the open. 

Blue Dream 

One of the most loved blue strains of weed is Blue Dream. The mostly sativa strain has around 16–20% THC and stems from a mix of Blueberry and Haze. Both medicinal and recreational tokers favor this cultivar for its balanced effects. 

The strain offers an aromatic profile of berries, tropical fruits, and earth. Sugary berries hit your tongue on the inhale, followed by earthy notes and light vanilla. The taste is reminiscent of a summer dessert or fruit salad.

Two to three tokes are enough to get this one-of-a-kind blue marijuana strain to hit. The first sensation you experience is an energy boost that lifts your mood. Many use this cultivar as a wake and bake. It’s also great for rejuvenation after the mid-day slump.

Growing these blue marijuana plants is a rewarding challenge suitable for intermediate-level cultivators. The strain boasts high yields, but keep an eye out for red spider mites who enjoy nibbling on the sweetly scented cultivar. 

Crops take 8–10 weeks to flower, and the indoor yield averages 14–21 oz./m², and outside offers 14–21 oz./plant. 

Blue Cookies   

If you’re a fan of the legendary Cookies family, you’ll love the Blue Cookies strain. The cultivar brings together the genetics of the popular Girl Scout Cookies and Blueberry. 

It’s an indica dominant cultivar with 18–21% THC levels. This blue weed strain is powerful, and just one or two tokes are enough to release intense effects. The buds are eye-catching and exude aromas of berries, earth, and herbs. 

Crush them, and the scents intensify. A berry blast tickles your tongue when you inhale, followed by hints of herb and earth. The flavor stays consistent throughout the toke, with a sweet aftertaste that lasts a few minutes.

The effects are euphoric, taking your mind soaring to new heights of positivity. The blue marijuana allows you to retain focus and also has aphrodisiac qualities. 

Growing Blue Cookies is straightforward and ideal for novice cultivators. They flourish inside or out and don’t need much maintenance aside from regular pruning. 

Low humidity is best for these blue marijuana plants, and the average yield is 14 oz./m² inside and 19 oz./plant outdoors.

Blue Haze  

The Blue Haze strain is sure to leave you impressed. The indica-leaning cultivar offers 15–21% THC. CBD levels are typically low, averaging around 2%. The cultivar is a fusion of Blueberry and Haze. 

This blue marijuana is a firm favorite for both recreational and medicinal users. This cultivar has a delectable flavor profile, is packed with terpenes, and induces uplifting effects. 

The buds give off fragrances of blueberry and earth. When you grind them, vanilla and tropical fruit scents emanate from the nugs. When you take a toke, the first flavor you taste is berries. 

As the smoke swirls around your mouth, you detect earthy notes with hints of spice and cheese. On the exhale, you taste a sugary blend of blueberry and vanilla. The effects are euphoric and relaxing. 

At first, you experience a mild headrush that boosts your mood and washes away any negativity. Shortly after, a body buzz ensues, helping you unwind from head to toe. This blue cannabis is the perfect way to end a stressful day. 

Cultivating Blue Haze seeds is best suited to those up for a challenge. They require consistent low humidity levels and exposure to cooler temperatures during the flowering phase. These crops yield 14–21 oz./m² indoors and 14–21 oz./plant outside. 

Blue Zkittlez

The Blue Zkittlez strain is a THC-rich indica-dominant hybrid. It contains very little CBD and is the love child of Blue Diamond and Zkittlez. This cultivar is pretty rare and an ideal evening toke. 

The cultivar’s flavor profile consists of berries, citrus fruit, diesel, and earthy notes. When you take a puff, a fruity bouquet enchants your tastebuds. Diesel notes come to the fore as the smoke hits the back of your throat.

When you exhale, the flavor is primarily berries with subtle earth. The effects improve your mood and help you relax. It’s best to enjoy this blue marijuana strain in the evening when you want to calm your body and mind. 

The cultivar pairs well with social activities or chilling in front of the tv. Overindulging in Blue Zkittlez may lead to sedation. 

These blue marijuana plants reach a medium height and thrive in dry regions. Liberal supplementation ensures healthy growth and potent buds. Crops grown outside offer around 2–3 oz./plant, whereas indoor yields vary.

Blue Diesel

One of the most loved blue weed strains is Blue Diesel. The cultivar contains 17–23% THC and stems from a blend of NYC Diesel and Blueberry. 

The former parent passes down uplifting qualities typical of sativa strains. Blueberry offers its terpene blend and flavor profile. 

Buds from the Blue Diesel strain have sweet scents and tastes of blueberry, diesel, and cotton candy. The aftertaste is sweet and lasts for several minutes after your final puff. The cultivar has a mellow hit, leaving you revitalized and euphoric. 

Cultivating the Blue Diesel strain is straightforward and suitable for growers of all levels. It has a natural resistance to mold and mildew and doesn’t need much maintenance. Grow this strain indoors or out for massive yields of up to 21 oz. per plant.

3 highest yielding blue marijuana strains 

Is your main priority massive yields? These blue weed names don’t disappoint. Our top picks in this category include:

Blueberry Head Band feminized 

For a one-of-a-kind, cerebral buzz, try Blueberry Head Band feminized. The cultivar is the offspring of ’76 Blueberry, Emerald OG, Cali Sour D, and pre ’98 Bubba. The hybrid offers a delightful experience with delicious flavors and strong effects.

Like most blue weed strains, this cultivar has a fruity aromatic profile. Blueberry dominates, but clear lemon, pine, and diesel notes are there. 

Take a toke and taste refreshing citrus fused with sweet berries and hints of skunk. On the exhale, subtle diesel blends with the fruit bouquet. 

The effects occur quickly. One or two puffs are sufficient, and it contains an average of 16% THC. 

The psychoactive sensations start with a head rush. Euphoria and positive thoughts flood your mind. You feel focused yet tranquil. Soon these feelings trickle down your limbs and relax every part of your body.

Growing this blue marijuana is pretty straightforward. The main challenge for indoor cultivators is the crop’s height, which can reach around 8ft. The plants flower for roughly nine weeks and produce dense nugs. The yields typically range from 11–14oz./m² indoors and 35–42 oz./plant outside.

Blueberry Badazz OG feminized 

A fusion of the classic OG Kush and Blueberry, this cultivar brings incredible genetics and a powerful profile to tokers. It’s indica-leaning and contains 19–24% THC. The strain features less than 2% CBD. 

This blue weed strain is sweet and tastes like berries, musk, and sandalwood. When inhaled, sugary fruit dominates, with softer notes making their way through on the exhale. 

The Blueberry Badazz OG feminized effects set in quickly, inducing giggly euphoria and mind-bending bliss. It’s a social strain best enjoyed in the evening when you’re trying to wash away all the day’s stress.  

When these sensations settle, the physical aspect kicks in, relaxing every inch of you and melting you to the sofa. 

Cultivating these blue marijuana plants is pretty straightforward, and growing indoors produces 16 oz./m² and outside 21–25 oz./plant. 

Blue Widow feminized 

This indica-dominant cultivar stems from the union of Blueberry and White Widow. It contains high THC levels that range from 12–17%. Blue Widow feminized is fragrant with buds that give off a luring scent during the flowering stage. 

This blue cannabis has a unique aromatic profile, including citrus, pine, wood, and sweet berries. These translate well into the flavor, but hints of spice and earth come to the fore on the exhale.

Medicinal tokers favor Blue Widow feminized for its reported health benefits. On the other hand, recreational users believe the strain is well-balanced, inducing positivity paired with mental clarity.

Cultivating these blue marijuana plants is best suited to those with some experience as it requires a moderate feeding schedule and some training. The yields average 12–17 oz./m² inside, and outdoor crops produce 15–21 oz./plant.

Bring out the blue with these strains  

Blue weed strains set themselves apart from other cannabis varieties with their beautiful shades. They offer an exciting experience to all your senses. 

Their appeal starts with the way they look, which varies from one strain to the next but includes blue and purple hues. A common scent among them is that of sweet berries, and the effects differ from one cultivar to the next.

Now that you know more about blue cannabis strains, why not grow your own? Visit our Homegrown Cannabis Co. seed store to start your growing journey. If you’ve enjoyed this article, feel free to share it on social media. Follow our social channels and subscribe to our newsletter for more informative cannabis-related content.

About the author: Parker Curtis

Parker Curtis has around a decade of cannabis-growing experience, specialising in soil-less and hydro grows. He’s mastering outdoor, greenhouse, and indoor grows.