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G13 strain

aka G-13, G Thirteen

IndicaTHC 20%CBG 1%
stock photo similar to G13
4.3(1,223 ratings)
G13
G13
Indica
Top effects
Loading...Sleepy
Loading...Euphoric
Loading...Relaxed
Top flavors
Loading...Earthy
Loading...Pine
Loading...Woody
Terpenes
Myrcene
Limonene
Caryophyllene
calmingenergizing

G13 effects are mostly calming.

low THChigh THC

G13 potency is higher THC than average.

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G13, also known as "G-13" and "G Thirteen," is a potent indica marijuana strain and is the subject of many urban legends. According to some accounts, the CIA, FBI, and other agencies gathered the best strains of marijuana from breeders all over the world. At a super-secret installation at the University of Mississippi, they bred many new super hybrids in the late 1960s. Allegedly, a single cutting of this plant was liberated by an unnamed technician and bred for the masses. Although the legends are probably not true, G13 delivers effects like no other. If you have the opportunity, definitely partake in this strain.

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G13 strain effects

Reported by 1223 real people like you

Positive Effects

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Sleepy

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Euphoric

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Relaxed

Negative Effects

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Dry mouth

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Dry eyes

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Dizzy

G13 strain flavors

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Earthy

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Pine

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Woody

G13 strain helps with

  • Stress
    39% of people say it helps with Stress
  • Pain
    31% of people say it helps with Pain
  • Anxiety
    31% of people say it helps with Anxiety
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G13 strain science

Certified Strain Science
Terpenes not only determine the flavor and aroma of a cannabis strain, they may also modify its effects. We’ve sourced this terpene data from products tested in Leafly Certified labs.
G13
G13
Indica
Phenotype
Indica
Dominant terpene
Myrcene (herbal)

G13 terpenes

The most abundant terpene in G13 is myrcene, followed by limonene and caryophyllene.
Myrcene (herbal)
The most common terpene found in cannabis and has an earthy scent.
Limonene (citrus)
Caryophyllene (pepper)

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Type
Cannabinoid
Top effect—————
Dominant terpene—————


G13 strain reviews(1,223)

write a review
February 16, 2026
S........0
Loading...Euphoric

I really enjoyed smoking this one here. It has a nice gassy / diesel truck motor smell to it. The high leaves you nice and relaxed in the physical body. I smoked this before work In the morning and I didn’t feel tired at all. It’s a relaxing body feeling but I still feel functional and awake enough to work efficiently. I would say slightly more indica. Definitely worth trying in my opinion, go get your own! show less

2 people found this helpful
January 13, 2026
J........7
Loading...Euphoric
Loading...Focused
Loading...Happy
Loading...Talkative

Got G13 THCA diamonds from Hometown Hero online. Vaped a small piece the size of a grain of rice on an electronic dab pen. It kind feels like a 60% indica 40% sativa to me. Like I can function without being “out of it”, like strong indicas tend to do with me. I’m studying in University and blowing three decent sized clouds from my pen made this morning’s required reading less boring. Been puffing on it all day and I enjoy the daily’s normal activities much more fun than before. Tarot reading, Rosary prayers, checking out the latest brain rot on social media - all of them made my day all the more uplifting. It didn’t make me hungry either. It’s 8pm here and I still haven’t eaten a thing. It’s good because I’m kind of overweight as it is. Good vibes though a few hits and I was lightly toasted.

3 people found this helpful
May 22, 2026
M........Y
Loading...Euphoric
Loading...Happy
Loading...Relaxed
Loading...Sleepy

I finally found it! This is a great sit on your couch, watch a movie, play a chill video game, zone out to some music strain. Great for evenings where you don’t have to accomplish anything but turn off your brain, consume some media, and fall asleep. Very old school stoned from college in the 90s. Not some gonzo super strong overwhelming insane high you need to brace yourself for.

3 people found this helpful
June 11, 2026
R........2
Loading...Hungry
Loading...Relaxed
Loading...Sleepy
Loading...Dizzy

Very solid strain, that will sure hit like a mf each time. Really good for smoking in the day, at least in my case. For new smokers I would advice starting small, cause it can get very trippy if you smoke alot, and can even make you a bit nauseous.

May 11, 2026
S........3
Loading...Creative
Loading...Energetic
Loading...Euphoric
Loading...Giggly

I smoked it and it unglued me from the bench

1 person found this helpful
February 9, 2025
z........4
Loading...Creative
Loading...Euphoric
Loading...Giggly
Loading...Relaxed

This might be my favorite strain ever; it gives you such a unique high. Imagine you're drunk but you're not impaired to functionally do anything, it's just the mental state you're in when you're drunk. The head state is also super trippy and makes you feel like you're in a dream. Unlike a lot of strains with that feeling, though, it won't make your mental state insanely cloudy. It's more like a slight out-of-body experience that you still feel in control of, like you're watching your own life and controlling your body from a few inches away. Oh, and it has that typical indica body stone but you can control it, making for this full-body stoned state that has me feeling closer to being in a dream than any other strain. Super fun to do with friends and at social settings, also makes you MAD hungry & I was laughing at literally everything

8 people found this helpful
October 19, 2025
r........r
Loading...Tingly
Loading...Anxious
Loading...Dry eyes

i only took 4 pulls, which is my normal intake, while smoking with my friends and it was fun at first but then i went inside, i felt my heart clench and i sat down and was thinking about what movie i wanted to watch and then next thing i know im telling my friend im having a panic attack and for the next 3 hours i had to convince myself i didnt need to go to the hospital lol, i was fine after i took an anxiety pill and then a benadryl to make me sleepy. once that kicked in i was good. nice flavor tho, i enjoyed the smoking of it quite a bit. i just dont like the high. maybe in a smaller doseage but i think im just gonna avoid this one from now on. also i slept really good after. the moments my body didn't feel incredibly overstimulated, i could imagine liking it with a one hitter.

1 person found this helpful
December 9, 2024
j........t
Loading...Giggly
Loading...Happy
Loading...Relaxed
Loading...Sleepy

I have some great memories with G13. It used to be my favorite all-around weed a couple of years ago, and with good reason. It is very potent and relaxing but can get overwhelming if you're a new smoker. However, if you have experience smoking, it will get you just right to relax, watch a movie, or sleep. I don't recommend planning anything physically demanding after you smoke because you will not be doing it. Believe me, the couch with a good movie and good snacks is your place to be when smoking this.

7 people found this helpful
April 8, 2025
D........g
Loading...Energetic
Loading...Giggly

Very Earthy, subtle tones of the oranges on the hills of Blackpool and is some of the best weed that my Asian friend has had and will be surpluses in the market singlehandedly in Bangladesh by himself!top wood

2 people found this helpful
November 6, 2024
h........1
Loading...Hungry
Loading...Relaxed
Loading...Sleepy
Loading...Uplifted

G13 what a strain earthy, sweet, pine/woody, oranges & a nice tropical fruit sweetness. With an unknown history only rumours makes it such an interesting strain. Afghani is supposed to be one parent of it as for what the second &/or maybe third strain is, is completely up to you to try & work out I’ve heard some say Panama Red, Maui Waui, Haze & some sort of Asian land race & others say maybe it’s a 3 way cross breed who knows? Oh well as a smoke she’s worth it 11/10

3 people found this helpful
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G13 strain spotlight


G13 strain genetics

G13
G13
G13
First strain child
Tnd
Tangerine Dream
child
Second strain child
Lv1
Love Potion
child

G13 grow information

Type
indica
sativa
hybrid
Difficulty
easy
moderate
difficult
Height
short
average
tall
Yield
low
medium
high
Flowering (weeks)
7 - 9
10 - 12
> 12

Photos of G13

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