G13 Strain Information & Review

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g13 strain
Author avatar By Derek LaRose
July 29, 2022
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The G13 strain is a super-secret indica-leaning hybrid with unknown origins. A few tokes of this mysterious weed has you soaring into the stratosphere, thanks to its mentally and physically stimulating high.

Join us for the full lowdown on this cryptic marijuana cultivar. Our G13 strain review explores its effects, flavors, genetics, and unique characteristics. You’ll also get expert tips on where to buy G13 strain seeds and how to grow them indoors and outside.

G13 strain (aka Government Indica Strain 1)

The G13 weed strain, also known as Government Indica Strain 1, was created sometime during the early 1970s. Various sources state that it’s a product of the US government. 

However, it’s almost impossible to confirm this theory because cannabis was illegal during those times, so breeders couldn’t track down the exact genetics.

Before we get into the nitty-gritty details, here’s an overview of the essential G13 strain info:

  • Type: Indica-dominant hybrid
  • THC: 16–24%
  • CBD: <2%
  • Top reported effects: Relaxed, calm, happy
  • Top reported flavors: Pine, earth, berries
  • Dominant terpene: Linalool
  • Flowering time: 8–10 weeks
  • Growing difficulty: Beginner-friendly
  • Indoor yield: 15–19 oz./m²
  • Outdoor yield: 35 oz. per plant
G13 strain info

G13 strain effects

The G13 marijuana strain contains approximately 70% sativa and 30% indica genetics. Its THC levels typically reach up to 24%, promising an abundance of psychoactive sensations. 

Many stoners consider G13 a super strain, and it doesn’t waste any time imparting its powerful effects. Within minutes, a rush of euphoria sends shivers down your spine, turning any frowns upside down.

Expect an instant mood boost that banishes negative feelings and completely changes your outlook on life. The G13 strain also induces focused, motivated, and productive feelings, but they don’t last too long because the physical sensations quickly swoop in.

As the indica influence takes over, your body starts to surrender to the limb-locking effects. A strong wave of sedation creates a mellow atmosphere, allowing you to relax and unwind.

These drowsy sensations typically cause couch-lock, so make sure you have a clear schedule before consuming the G13.

G13 strain flavors

The G13 cannabis strain emits a potent fragrance of dank earthiness, wild berries, and savory cheese. If you’re not used to the strong smell of cannabis, these buds might surprise you.

When you smoke the G13 strain, a woody, pine, and somewhat sweet flavor dominates your taste buds. Subtle traces of mint and other herbs leave a lingering aftertaste.

G13 strain grow information

The G13 strain is easy to cultivate and a fantastic option for growers with various levels of experience. These cannabis crops are hardy, adaptable, and ensure generous harvests.

These marijuana plants reach about three feet tall and demonstrate a remarkable resilience to pests, pathogens, and mold.

You can raise them indoors or outside, depending on your available resources. Opt for a soil medium to boost the flavor profile or grow the G13 strain in hydro for explosive growth.

Outdoors, these weed crops flourish in a warm and dry Mediterranean-like climate, typically found in California, Australia, and Southern Europe. Indoors, remember to maintain dry growing conditions and keep the temperature around 64–84℉.

Here are some G13 strain grow tips to help you cultivate top-quality cannabis crops:

  • Give your plants plenty of space to develop their roots and produce ample budding sites.
  • Prune and trim your crops regularly so that every part gets adequate light and air.
  • Consider implementing the Screen of Green setup to maximize space and increase yields.

The G13 strain flowering time is around 8–10 weeks. After that, you can expect to collect up to 35 oz. per outdoor plant and 15–19 oz./m² of indoor buds.

G13 strain genetics

Although the G13 strain’s history is mostly unknown, some clues point to its origin. Cannabis enthusiasts believe the initial G13 was a pure indica, but after decades of crossbreeding, it also contains sativa genetics.

The common theory is that the US government bred the G13 strain as part of a top-secret project. However, there’s no evidence to prove this is true, and nobody truly knows which cultivars played a part in its creation. Legend says an Afghani landrace could be one of the parent strains, but this information remains classified. 

G13 strain seeds to buy near you

If you’re itching to get your hands on some G13 strain seeds, you’re in luck. There are three variants of these weed seeds on the market, and you can get two of them from our Homegrown store.

Check out the differences between the various G13 strain seeds:

  • G13 feminized seeds: These cannabis seeds are beginner-friendly and have a 99% guarantee of producing female-only plants. Grow top-shelf buds and forget about the duds with our G13 feminized seeds.
  • G13 autoflower seeds: These marijuana seeds are suited to intermediate growers and are non-photoperiod, meaning you don’t need to flip them to initiate flowering. Harvest more frequently with our G13 autoflower seeds.
  • G13 regular seeds: These weed seeds produce male and female crops, so they’re an excellent choice for those interested in breeding hybrids and beginners wanting to learn more about cannabis cultivation. 

G13 strain reviews

Check out what some of our awesome customers had to say about our G13 strain seeds:

Bob CG13 autoflower seeds

“Truly amazed at how quickly these grew. My new favorite strain to grow.”

John PG13 autoflower seeds

“Seeds are great can’t wait to get pass these next couple weeks, almost time.”

Andy MG13 feminized seeds

“Most seeds have germinated growth has been steady so far good strong plants.”

John FG13 autoflower seeds

“I am very pleased with the G13 auto seeds purchased. 100% germination. Easy to grow. Huge yields.”

Brandon SG13 autoflower seeds

“This is an amazing creation!!!! HIGHLY recommended!!!!! Easy maintenance.”

Ganja fit for the government

If you want a relaxing pick-me-up, the G13 is an excellent choice. These buds guarantee powerful mental stimulation followed by an intense dose of physical relaxation. Apart from potency, the G13 strain also promises fruitful yields and an easy growing experience.

Start your G13 Homegrown Diary and track the progress of your cannabis plants from germination to harvest. You can also check out other grower’s crops on our Homegrown Diaries and compare results.

While you’re at it, don’t forget to join our Homegrown Forum for expert tips and tricks on cannabis cultivation. What are you waiting for? Buy your G13 strain seeds today and grow premium weed from the comfort of your home.


About the author: Derek LaRose

Also known as Kronic from The Cannabis Kronicles, Derek LaRose is a young ambitious cultivator and a staple educator for indoor cultivation.