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.

What causes weed to turn blue?

Does blue weed sound odd? It may surprise those who see these bizarre-looking strains for the first time, but it’s a perfectly natural phenomenon. 

Weed strains get their hue from parents with a high concentration of anthocyanins. These water-soluble flavonoids are responsible for developing red, blue, purple, and other hues in flowers, fruits, and vegetables. 

Almost all cannabis plants are green during the early growth stages due to abundant levels of chlorophyll and nitrogen. As the environment impacts the hue of flavonoids, it’s possible to manipulate them to create strains with unique weed colors, like blue marijuana and black weed.

The pH level is a vital factor that affects how the anthocyanins influence plant hues. They give red strains their crimson shade when in an acidic state and cause them to turn blue under alkaline conditions.

The grow room’s temperature also influences the plant’s color, allowing you to stimulate blue weed strains by cooling the area. Note that the trichomes covering the nugs may make them look white.

Not all hues benefit from the manipulation of growing conditions. Purple cannabis typically has more anthocyanins than chlorophyll. When the flavonoids prevail over the latter in the fall, the violet color appears. Renowned cultivars in this category include Granddaddy Purple and Purple Urkle.

Some growers attempt to influence the color transformation by depriving the cannabis plant of oxygen, overloading nitrogen, and changing the light cycle. We don’t recommend it, as these practices may negatively impact the plant’s development.

Besides blue weed strains, you might come across cannabis cultivars with other hues that don’t result from the presence of anthocyanins.

Plants with white-colored buds are called albino weed and are extremely rare. These crops lack chlorophyll, which affects the process of photosynthesis and impacts their survival. 

Genetics and environmental factors may also cause albinism. Nothing can be done if the condition results from the former, but changing the latter could minimize its effects. Growing quality weed seeds is an excellent way to avoid the problem.

Weed with orange buds has genetics that cause its pistils to display an amber-like hue. Many of these weed strains have citrus scents and flavors due to a unique terpene blend that contains limonene and myrcene.

Blue weed characteristics

Blue-colored weed has unique traits, depending on its genetics and growing conditions. While most strains in this family have similar hues, they may contain different terpenes that offer varying sensations and flavors.

Genetics

The blue weed family originates from DJ Short’s indica-dominant Blueberry strain, created in the 1970s in the Netherlands. The breeder crossed an Afghani indica with a Highland Thai and Purple Thai sativa to develop this renowned hybrid.

The legendary cultivar’s descendants include Blue Cheese, Blue Haze, and Blue Dream, the perfect choice for growers wanting to cultivate blue cannabis.

Effects

Although research is ongoing, evidence suggests anthocyanins in blue weed nugs may provide health benefits. Studies claim these flavonoids are potent antioxidants with anti-inflammatory, neuroprotective, and analgesic properties.

Since the pigment of the plant doesn’t affect its THC level, the sensations depend on the genetics and whether it’s a mostly sativa or indica strain. The former typically uplifts and energizes, while the latter relaxes and sedates.

The effects that blue weed plants have in common include:

• Euphoria 

• Calmness 

• Relaxation

• Upliftment

Not every user shares the same experience, as it’s determined by different individual factors:

• Age and sex

• THC tolerance level

• Previous marijuana experience

• Dosage consumed

• Pre-existing medical conditions

• Consumption frequency

Always consume in moderation when starting out and gradually increase the amount to avoid any unpleasant reactions. Common side effects like cottonmouth and dry, red eyes are easily fixed with some water, eye drops, and food.

Flavors

While many marijuana strains produce similar-looking blue buds, they all have a unique taste. Some flavors are more common, such as blueberries and other delectable fruits, as many of these cultivars share a single lineage.

Although Blueberry’s genetics are present in most strains, crossbreeding results in its descendants having different terpene profiles that determine their tang.

What are the 7 top blue 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.

If you opt for the Blueberry strain, cultivating will be fairly easy. 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 

Blue Cheese is a well-known blue marijuana strain. 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 Blue Dream 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 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.  The same effect provides marijuana grown from Blue OG feminized seeds which are also worth mentioning.

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.