G13 Seeds

An in-depth review on the legendary G13 strain. Discover everything about G-13, such as its mythical history, growth traits, and where to find real Feminized G-13 seeds for sale online.

G13 Seeds Cover PhotoHave you ever been curious what a weed strain would look like if the government produced it?

Well, according to the legend — G13 is your one and only chance.

Whether the stories are true or not, it’s clear that G13 is an indica powerhouse that’s primed to melt faces while relaxing your body into oblivion. From mouth-watering flavors and sky-high yields, it’s a no-brainer to add G-13 seeds to your garden.

Therefore, continue to read along while we provide an in-depth review for the G13 strain. Soon, you’ll learn how to grow G13 seeds, what type of cannabinoid profile G13 offers, and where to buy Feminized G13 seeds online.

G13 Seeds – Strain ID:

G13 Weed Bud

Type: Indica
Cannabinoids: 24% THC
Terpenes: Myrcene, Caryophyllene, Pinene
Effects: Euphoric, Relaxing, Social
Landrace Strain: Tangie x Lemon Skunk

Grow Difficulty: Moderate
Harvest: 8-11 Weeks / 11+ Weeks
Yield: Up to 750g/㎡ / Up to 2,000g/plant
Height: 5-6 feet/ 6+ feet
(*Indoor / Outdoor)

The Best G13 Feminized Seeds in 2023:

CKS G13 Feminized Seeds

• 24% THC
• Harvest: 10-11 Weeks
• Yield: 550g/㎡

• Shipping Worldwide
• Germination Guarantee
• Credit Cards & Bitcoin Accepted

• 5 Seeds – $65
• 10 Seeds – $120
• 25 Seeds – $240

ILGM G13 Feminized Seeds

• Up to 24% THC
• Harvest: 11 Weeks
• Yield: 600g/㎡

• Shipping to US, EU, UK, AU, NZ
• Germination Guarantee
• Credit Cards & Bitcoin Accepted

• 5 Seeds – $89
• 10 Seeds – $109
• 20 Seeds – $189

About the G13 Strain


If there’s one strain on this planet that receives a gigantic question mark about its origins — it’s none other than G13.

From secret government facilities to hippies liberating weed plants, the stories only add to the legendary quality of G-13. Although there’s a lot of doubt regarding the popular myth of G13 — we’re not going to counter it.

The story of G13 involves three different parties: the government, Neville Schoenmakers, and an anonymous government employee.

Sometime in the 1970s, Dr. Carlton Turner headed a secret government facility in Mississippi growing cannabis plants for research. At some point, an anonymous staff member “liberated” a number of cannabis seeds from the lab.

According to the story, the seeds were individually labeled as G1, G2, G3, and so forth. As it happens, the seed that was labeled G13 showed exceptional qualities to the unknown cultivator.

Soon after, G13 hit the streets of Mississippi and became an instant favorite. Around this time, Neville Schoenmakers (owner of The Seed Bank of Holland) was given a clone called G13.

The person that gave Neville the legendary G13 strain was Sandy Weinstein, who was loosely affiliated with the unknown lab assistant. Once Neville began to work on G13 — it became clear that G13 was beyond top-shelf and full of incredible qualities.

Decades later, G13 is still rated as one of the best marijuana strains ever. Luckily, cultivators can find Feminized G13 seeds through online seed banks.

Lastly, let’s get to the bottom of G13’s genetics.

Overall, G13 is indica-dominant. Whether it’s a landrace or not is an excellent question. From its growth traits, one would assume that it matches an Afghani landrace originally described in the G13 story.

In any case — it’s your choice to believe the G Thirteen story or not. What’s not up for discussion is the top-shelf quality of G13’s enormous buds!

Growing G13 Seeds

Whether you have G13 seeds or not — this section is dedicated to teaching you everything worthwhile about the G13 strain.

From optimal growing conditions to strain effects, you’ll find enlightening information that’ll assist you while growing G13.

If your indoor or outdoor garden is prepared — let’s begin!

Grow Difficulty

The G13 strain is known as a moderately challenging variety to grow.

In other words, beginners will need to step up their game if they want to harvest massive nugs of G13 weed. As for seasoned growers, the G13 strain is relatively straightforward to cultivate.

The G13 plant can grow big, making it necessary to implement training techniques. Beginners that understand how to train weed plants will have the upper hand. Therefore, cultivators must do their homework prior to germinating G13 seeds.

Last but not least is G13’s monstrous appetite. Unlike other cannabis strains — G13 will consume an obscene amount of fertilizer!

Optimal Growing Conditions and Climate

If we are to believe the story of G13, then the original G13 seeds were initially accustomed to indoor conditions.

However, G13 can be grown indoors and outdoors. In any case, outdoor growers must provide a space that receives abundant sunshine, warmth, and low humidity.

Indoors growers must provide G13 plants with an optimized climate, such as 75-85F. Furthermore, indoor growers must maintain a humidity range between 50-70%.

Flowering Time

The G13 strain flowers in 8-11-weeks.

If you grow outdoors, G13 seeds must be planted after the last instance of frost. Overall, harvest season occurs during the end of September, middle of October, or beginning of November for most outdoor growers.

Due to the large range of flowering times, you may need to reconsider growing G13 seeds outside. If you live in a region where autumn weather brings freezing nighttime temperatures — G13 plants will struggle to survive.

If you grow Feminized G13 seeds indoors, you will likely harvest by the 8-9-week mark. However, the final harvest time is dependent on the phenotype and trichome ripeness.


The yield of the G13 strain is exactly what you’d expect from government weed.

If G13 really was grown by a bunch of genius mad scientists — it’s no wonder why it yields such massive buds!

When grown indoors, G13 may produce upwards of 750g/m2. That’s right — 750-grams of crystal-covered buds swaying across your grow room!

When growing outdoors, G13 plants are capable of yielding upwards of 2,000-grams per plant. If you’re wondering — 2,000-grams is nearly 5-pounds of weed.

Remember, your skill as a grower and phenotype plays a large role in how much weed you’ll yield from G13. Therefore, take our maximum estimates with a grain of salt if this is your first grow.


G13 plants can grow tall.

When left to their own devices, G13 plants are capable of rocketing past 6′. Therefore, you’ll need to incorporate training and pruning methods if you don’t want a G13 jungle.

From SOG to LST, you’ll have the pick of the litter in terms of training methods. Most indoor growers keep the vegetative period to a maximum of 2.5-weeks to avoid massive plants.

If you grow G13 seeds outdoors, believe us when we say you’ll be looking up a lot as your G13 plants reach maturity.

Resistance to Pests and Diseases

The G13 strain is highly resistant to pests and diseases.

However, that does not give you a blank check when it comes to your crop’s health. Instead, always remain proactive and employ a sound IPM strategy to avoid irreparable damage to your G13 plants.

The best practices to ensure the health of your G-13 plants are:

  • Remove the lowest growth (lollipop)
  • Add one oscillating fan per meter squared
  • Adequately space each plant
  • Keep your garden clean
  • Always wear clean clothes into the grow room
  • Apply organic neem oil during the vegetative stage
  • Inspect the crop daily

G13 Strain Description and Properties

The Appearance of G-13 Weed

The appearance of G-13 weed can be described in one word — dank.

The buds of G13 are rather rough due to the high amount of secondary leaves throughout the calyx. Once trimmed, however, the bud shows off its gorgeously light green color and electric orange pistils.

The potency of G13 is obvious due to the massive amount of resin scattered across the buds. Overall, you won’t need a microscope to view the trichomes as each resin gland’s head is abnormally large.

Whether G13 was created in a lab or not — the buds speak for themselves!

Dominant Cannabinoids Found in G13 Buds

The dominant cannabinoid found in G-13 buds is none other than THC.

If you provide G-13 plants with enough nutrients and care during the season — you’ll find buds packed with 24% THC. In other words, G13 weed is super strong and not recommended for newbies.

From long-lasting effects to bone-crushing strength, we recommend that beginners take it easy with the G13 strain.

Dominant Terpenes Found in G13 Weed

G13 was created long before the introduction of dessert strains.

However, G13 contains an incredible mixture of terpenes that produce an aroma that’s reminiscent of fermenting blueberries, fresh pine needles, and sweet herbal undertones.

The flavor is similar to a cascade of pine sap, sweet berries, and a delightful twist of thyme. In other words, your taste buds will be relieved the moment you indulge in a massive hit of G13 weed.

The three primary terpenes found in G13 weed are myrcene, caryophyllene, and pinene. Myrcene and caryophyllene are known to produce sweet herbal and spice flavors that make G13 so enjoyable.

Lastly, the pinene within G13 is responsible for the amped-up levels of pine needles and fresh pine sap.

Effects of the G13 Strain

The scientists, according to the legend, must have been sorely disappointed to lose G-13 because it offers superb effects that are one-of-a-kind.

Once you indulge in this government-manufactured weed — get ready for liftoff.

G13’s effects are immediately noticeable, and the onset brings waves of sheer euphoria and mind-blowing bliss. As if the weight is taken off your shoulder, G13 levitates the body and eases every muscle into relaxation.

Additionally, G13 provides a sensation of well-being and an urge to socialize. Furthermore, reflective thoughts are widespread with G13.

Overall, G13 lifts your mind and body above the clouds but lays you down softly after 2-4-hours.

Medical Properties of the G13 Strain

The G13 strain was bred as if intended for medical marijuana patients.

The medicinal properties are basically tailor-made for most patients that suffer from medical issues, such as anxiety. Here’s a list of the major medical attributes that G13 can assist with:

  • Depression
  • Anxiety
  • Insomnia
  • Glaucoma
  • Stress

If you need ounces upon ounces of medical-grade weed — look no further than Feminized G-13 seeds.

Negative Effects of G13 Weed

With so many positive attributes, it only makes sense that there are a few adverse effects while indulging in the G13 strain.

If you consume too much G Thirteen weed — you may experience:

  • Extreme drowsiness or paranoia
  • Red eyes
  • Dry mouth

Additionally, if you’re new to cannabis — take it easy with G-13. The THC content is incredibly high, making the G13 strain a one-hit-quit for most.

Therefore, always gauge your tolerance and adjust your intake accordingly for an enjoyable time with G13.

Pros/Cons of Growing G-13 Seeds


  • Exceptional THC content
  • Delicious terpene profile
  • Record-breaking yields
  • Long-lasting effects
  • Medical-grade
  • Top-shelf bag appeal


  • Moderately difficult to grow
  • Challenging to find real Feminized G13 seeds
  • Grows tall
Watch: G13 Strain Harvest

The Best G13 Feminized Seeds in 2023:

CKS G13 Feminized Seeds

• 24% THC
• Harvest: 10-11 Weeks
• Yield: 550g/㎡

• Shipping Worldwide
• Germination Guarantee
• Credit Cards & Bitcoin Accepted

• 5 Seeds – $65
• 10 Seeds – $120
• 25 Seeds – $240

ILGM G13 Feminized Seeds

• Up to 24% THC
• Harvest: 11 Weeks
• Yield: 600g/㎡

• Shipping to US, EU, UK, AU, NZ
• Germination Guarantee
• Credit Cards & Bitcoin Accepted

• 5 Seeds – $89
• 10 Seeds – $109
• 20 Seeds – $189

Main Category Page:
Marijuana Seed Index – A curated index of the world’s best cannabis seed strains. Each review contains vital information, such as cultivation tips, strain profiles, and where to buy the best cannabis seeds.
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