G13 Marijuana Strain Review + Guide

G13 Marijuana Strain Review + Guide

G13, also known as Government Indica Strain 13, is an indica leaning hybrid known for its happy and relaxing high. It tastes super piney and earthy, so it’s great if you love those natural and herby-tasting strains. In addition, this strain is popular in the medical marijuana community and could prove useful for migraines, muscle spasms, and joint pains.

Dominant Terpene:
Pinene, Limonene, Myrcene
Common Usage
DepressionMuscle spasmsStress
Growing Info

According to its fans, the G13 strain is a different breed of weed, and it is a marijuana strain with a hint of mystery. Indeed, discovering the origins of legendary strains grown between the 1960s and 1990s is difficult. At that time, marijuana was completely illegal throughout the United States, which meant breeders didn’t have the opportunity to track down a full list of genetics and the sources of weed they used.

Their main concern was to avoid getting caught! Consequently, many of the older strains you may use carry with them a legend or two, and G13 is no different!

What Is the G13 Strain? History AND Mystery!

G13 weed is likely an indica-dominant hybrid strain. As for its history, it is almost impossible to tell the difference between a legitimate story and an urban myth. The story of G13 arguably begins at a rural Mississippi research facility sometime between the late 60s and early 70s.

According to one account, at least one U.S. Government agency was allegedly developing weed with assistance from the University of Mississippi, where government-approved cannabis grows.

The story of G13 arguably begins at a rural Mississippi research facility sometime between the late 60s and early 70s…

The suggestion is that the G-men grew pure Afghani clones labeled from G1 to G23. While every clone had slightly different traits, G13 was allegedly the most stable. Then, a breeder named Neville Schoenmaker contacted an unnamed rebel lab technician who was keen to liberate G13. Schoenmaker received a single sample of this new strain which he spread throughout the United States.

G13 made its way into the mainstream via the smash hit movie American Beauty, where it was featured as a form of marijuana that doesn’t make you paranoid. In truth, the origins of this strain remain unknown (unless you believe the myth), but we know that it is an exceptionally good smoke.

The Impact of G13

It won’t take long to discover why G13 is considered a super strain. You will feel a head high that begins right behind the face. It also quickly relaxes you and could help relieve any stress you’re currently feeling. Users often claim that a few tokes of G13 immediately put them in a better mood.

G13 is exceedingly potent, so a little goes a long way, especially when you’re a novice. Initially, you should feel energized, but soon, the indica element kicks in, and you feel infinitely more relaxed. Fortunately, G13 does not induce couch-lock, but the balanced high could lead to euphoria.


G13 is not a strain suited for clandestine users. You can put it in a sealed bag and still get a slight skunky whiff! It has a slightly sweet smell with more than a hint of savory cheesiness. Add in a wild berry scent, and you have a pretty unique-smelling marijuana strain.

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Most users enjoy the sweet pine flavor, which helps set it apart from most strains you’ll use in your lifetime. There are also mossy and woody flavors mingled in. When you add in a hint of creaminess, you have a strain worth savoring.


When you gather a good sample of G13, you will notice a thick coat of trichomes. Check beneath a high-quality nug, and you will marvel at the layers of trichomes located beneath the calyxes. Conclusion: G13 is a strain designed to help you get VERY high!

G13 Strain Grow Info

G13 is a strain that excels indoors or outdoors. Consider using the Sea of Green (SOG) training technique if you intend to grow enormous buds via an indoor weed installation. We recommend leaving lots of space between branches to allow these buds to grow and keep good airflow. Consider pruning your G13 crop, but make sure you cut a little at a time or risk sending your plants into shock.

G13 can handle daytime temperatures as low as 65 degrees Fahrenheit and thrives when your grow room’s temperature is as high as 85 degrees. When growing outdoors, you’ll benefit from this strain handling lower daytime temperatures better than most marijuana strains.

g13 strain

Outdoor growers will enjoy higher yields than their indoor counterparts because it flourishes when it has room to branch out. It grows so tall that you need to support it during the flowering stage. It is a heavy feeder, so make sure it gets lots of nitrogen, potassium, and phosphorus.

Outdoors, G13 is ready for harvest late in the season, at the end of October or even early November. G13 could yield an incredible 40 ounces of bud per plant outdoors, making it possible to mass-produce it. Indoor growers don’t exactly miss out on yield. Its flowering time is 9-11 weeks, and indoor cultivators could see a yield of up to 21 ounces per square meter planted.

THC Content – Highest Test

Some lab tests suggest that G13 has a THC content of up to 24%. Unlike strains with a large THC range, G13 is fairly consistent. The majority of samples will have a THC content of at least 22%.

CBD Content – Highest Test

If you want a marijuana strain high in CBD, you’re best served looking for something like Charlotte’s Web. G13’s CBD content is just 0.25% on average, though you might find cuts with closer to 1%.

Medical Benefits of the G13 Strain

G13 is a popular medicinal strain and is often used to manage the symptoms of chronic stress. As it helps elevate your mood, consider using G13 if you suffer from depression, anxiety, or any other mood disorder. The potency of this strain also makes it a popular choice as an analgesic, so if you have an issue such as migraine headaches, joint pains, or muscle spasms, G13 could be the ideal strain for you.

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Possible Side Effects of the G13 Strain

The main issue lies in G13’s potency. If you are a novice user, consuming too much G13 could cause a spike in any anxious or paranoid feelings you already have. In rare cases, this strain has been known to cause mild headaches once the high has worn off. You may also experience cottonmouth, dry eyes, and dizziness. This is often due to dehydration, so drinking water before, during, and after using G13 could reduce the risk.

Final Thoughts on the G13 Strain

The origins of this strain may be super-secret, but there is no mystery as to what happens when you partake in G13. It is a strong cannabis strain that will deliver a euphoric high that is likely to improve your mood. If you require a marijuana strain with a potentially positive effect, look no further than G13.

Although it has indica-leaning tendencies, G13 offers a relatively balanced high. You can safely use it in the afternoon without turning into a sedated vegetable, and you only need to use a small amount to enjoy its benefits.

As for all the talk about this strain being the work of government agencies such as the CIA and FBI, it is highly unlikely. It isn’t as if these government agencies want people to feel happy and contented after all!

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