G13 Haze Strain

If there is anything else that makes cannabis interesting aside from their medicinal value and mental or cerebral effects, it is the fact that some of them actually have a fascinating history.

Sativa/Indica %Indoor YieldOutdoor YieldFlowering Period
80% / 20%16 to 18 ounces per square meter22 ounces or more per plant8 – 9 weeks indoors, late September to early October outdoors.

Speaking of history, the use of cannabis has not always been legal in all parts of the world. Despite the continuing efforts of its supporters in highlighting their medical value, no matter the extent, there will always be a cloud of doubt surrounding these plants.

If you consider yourself as someone with ample knowledge about cannabis in general, you should easily find yourself wanting to try G13 Haze as soon as you learn about its origin and potency. Fortunately for those who are not very well-versed with these plants, here are some of the things worth knowing about this special strain.

G13 Haze is a cross between the infamous G13 and the original Haze from Hawaii. Both strains are known to be of high quality, but the G13 parent definitely takes the cake.

G13 is said to be developed during the 1970’s by the US Federal Medical Marijuana Distribution Program which, by the way, was supposed to be a top secret. Well, it is not so much of a secret now.

So, that alone should be more than enough reason for anyone to develop some level of curiosity and interest over this strain.

If that rumor was really true, can you believe that the US have actually seen the potential of this plant since the beginning?

Nonetheless, the current breeder of G13 Haze most probably has nothing to do with that allegedly secret program or perhaps you can verify that with Barney’s farm.

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G13 Haze weed strain attributes:
ORIGING13 and Haze
EFFECTSHappy – 10
Relaxed – 10
Euphoric – 9
Giggly – 7
Uplifted – 7
Dry eyes – 3
Dizzy – 2
Anxious – 1
Paranoid – 1
FRAGRANCESweet, pungent, fruity
FLAVORSSweet, spicy, fruity, sage
MEDICALStress – 10
Pain – 7
Insomnia – 5
Depression – 4
Eye pressure – 4
FLOWERING TIME OUTDOORSEnd of September to early October
PLANT HEIGHT4 to 10 feet
THC CONTENT %18% to 23%
CBD %0.1% to 0.7%
INDICA / SATIVA %20%/80%
INDOOR YIELD16 to 18 ounces per square meter
OUTDOOR YIELD22 ounces or more per plant
GROWTH LEVELExperience needed to grow

* 10 is the highest
* 1 is the lowest


G13, on its own, is popularly known to be a strong and highly potent Indica strain. In fact, crossing it with a Sativa strain such as the original Haze was meant to neutralize its powerful sedative-like effect on its users.

However, note that smoking large doses can still induce mind-body sedation especially for beginners.

G13 Haze is, therefore, a result of the efforts of the breeder to control the potent Indica effects of G13 without necessarily diminishing its quality. If anything, the delicious taste of the Haze only adds a delectable flavor to this hybrid strain.

With a THC level of at least 18% and a maximum of 23%, G13 Haze remains to be one of the highly potent strains out there. Not to mention, one of the few that have been developed from superior types of parent strains.

closeup photo of g13 marijuana strain flower

The fact that G13 Haze is a Sativa-dominant strain, one can expect to have an intense cerebral high that might be too overwhelming for inexperienced smokers. At the onset, users will feel uplifted, euphoric and extremely energetic.

However, once the effects of its Indica content kicks in, you should expect to feel a deep sense of relaxation that basically what keeps you from falling too deep into the strain’s intense head high.

G13 Haze terpenes

Myrcene, caryophyllene, carene, phellandrene and terpinolene are what make up this weed strain’s rich terpene profile.

Aroma & Flavor

The scent of G13 Haze is not really as distinctly special as the attributes of its parent strains are. However, you can expect it to smell like a combination of sweet, fruity and pungent with a touch of spicy sandalwood. The latter should remind you of a rich and deep earthy aroma.

Naturally, fragrance always affects the overall flavor of anything. So, with the G13 Haze, it is no surprise that it has a sweet, fruity and spicy taste with a hint of sage. Its tasty flavor can be attributed to its parent, the Haze strain.

Myrceneearthy, musky, fruity, clover, hop, pungent
Caryophyllenespicy, cinnamon, clover
Carenesweet, citrus, pungent, herbal, earthy, musky, wood, cedar, cypress wood
Phellandrenemint, lime, citrus, herbal, floral, wood
Terpinolenefresh, smoky, wood, herbal, citrus, floral

Adverse Reaction

The initial warning for anyone who is thinking of smoking this type of strain is to consider their tolerance to intense head high. The strength and potency of G13 Haze come with a precaution that even seasoned users should always take into account.

g13 marijuana strain buds on flat surface

Some adverse reactions that users need to be watchful of are signs of dry mouth, dry eyes, dizziness, anxiety and paranoia.

We don’t currently sell G13 Haze seeds. Check out other sativa dominant seeds in our marijuana seed shop.


The G13 strain was initially developed for medical use. So, as a hybrid coming from such a useful parent strain, G13 Haze also shows some evidence of medicinal value in spite of a relatively low CBD level with a range of 0.1% to 0.7%.

The strain is known to effectively treat stress, depression, and insomnia. It can also help alleviate chronic pain, fatigue, headache and can even stimulate your appetite.

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G13 Haze may be grown both indoor and outdoor. However, it is more suitable to grow them indoor where you could restrict its height to only 4 feet by carefully topping and trimming them as they grow.

The Screen of Green (SOG) method is also a good way to cultivate your G13 Haze indoors. This will involve training your plants using a fine screen that will ultimately encourage high yields.

g13 marijuana strain plants growing outdoors

Flowering Time


If grown indoors, the flowering time of G13 Haze should take about 8 to 9 weeks. By the time your plants are ready for harvest, you should expect a yield of 16 to 18 ounces per square meter.


The flowering time for outdoor cultivation will last until the end of September to early October. The expected outdoor yield is 22 ounces or more per plant.


  1. G13
  2. Haze

FAQ About G13 Haze Strain

What is the G13 Haze strain yield?

G13 yields 16 to 18 ounces per square meter indoors and 22 ounces or more per plant outdoors.

How much THC does G13 Haze have?

From 18% to 23%

What are the origins of the G13 Haze strain?

G13 Haze, as its name implies, was created from a cross between G13 and Haze.

Have you ever smoked or grown your own G13 Haze? Please let me know what you think about this marijuana strain in the comments below.


Top 50 Marijuana Strains

Afghan Kush | Agent Orange | AK-47 | Alaskan Thunder Fuck | Amnesia Haze | Berry White | Blackberry Kush | Blue Cheese | Blue Dream | Blueberry | Bubba Kush | Cheese | Chemdawg | Cherry Pie | Chocolope | Death Star | Durban Poison | G13 | Girl Scout Cookies | God’s Gift | Golden Goat | Gorilla Glue #4 | Grape Ape | Green Crack | Harlequin | Headband |Hindu Kush | Jack Herer  | LA Confidential | Lemon Haze | Lemon Kush | Mango Kush | Master Kush | Maui Wowie | Northern Lights | OG Kush | Pineapple Express | Platinum Girl Scout Cookies | Purple Kush | Purple Urkle | Skywalker | Skywalker OG | Sour Diesel | Strawberry Cough | Super Lemon Haze | Super Silver Haze | Tahoe OG Kush | Trainwreck | White Rhino | White Widow

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Mr Robert Bergman PhD


Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations ... See profile

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3 comments on “G13 Haze Strain”

  1. I have one G13 seed in my fridge I’ve had it for quite a While as it’s flowering time is two weeks longer than the strains I normally do . But I think on my next grow (LSD) I’m Going to pop it 🙂

  2. ‘@kevin mick give it a whirl you dont know if you dont try just keep on top and make sure your tips dont get burnt you’ll be sweet we’ll see how weel this shit smokes when i plough through an ounce in 5 days im no seasoned smoker i’m just a heavy chain smoker of both cigs and sweed lol 11 years strong quit after this though so i thought i best go out with a stupidly great high

  3. im thinking about growing this but my space is limited, i have roughly 3ft of growing space. just want to do one plant is this doable…its a grow cabinet 3ft by 2 f by 6ft with two chambers one for veg and seedlings and one for flowering.