G13 Cannabis Seeds

Learn about G13 feminized cannabis seeds–from their mysterious origins and growth cycle, to grow tips and effects.

  • 70% Indica 30% Sativa
  • THC levels up to 24%
  • Thrives in a spacious environment
  • Encourages a sense of happiness
  • Offers ginormous outdoor yields!
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The G13 Strain’s Popularity

Mysterious in nature, the G13 strain has gained legendary status over time. According to urban legend, the strain was created at a University of Mississippi research facility in the 1960s or 1970s due to a secret collaboration between the CIA and the FBI. That’s why some people claim the “G” stands for “Government.” Regardless of the real history, there are plenty of known reasons why this is one of the most popular cannabis strains out there.

As a top strain, G13 is remarkable for its big, explosive effects and how consumers can use this versatile marijuana for a wide range of reasons. For any smoker who’s ready to go on a true cannabis experience, it gets no better than this marijuana strain. On top of that, if you’re looking to cultivate a large yield, then this is the strain you’ve been waiting for!

You’re probably ready to get your hands on some top-notch marijuana seeds, right? Sure you are, and Growers Choice Seeds (GCS), a top-rated online seed bank, sells premium feminized seeds to give you a cultivation process like none other. To achieve a successful grow, read on to learn more about this outstanding strain, its genetic makeup, potency levels, taste profile, and important information that will serve you well throughout the cultivation process.

Who are G13’s Parent Strains?

While we would love to tell you about this strain’s parental lineage, we can’t because it’s a mystery—we told you this was a secretive stain! Some cannabis connoisseurs think Afghani is part of G13’s background, but we can’t say for sure.

One thing we know is that the G13 strain is a proud parent of other impressive strain and has had a huge impact in passing on its superior genetics to MK Ultra. Lemon G is another child that G13 is happy to claim as its own. As you continue to learn more about this legendary strain, you’ll see why it’s often crossed with other strains to create exciting new weed strains!

What is G13’s THC Level?

A top selling point of G13 is its potent THC content, which is 24%, giving it a big, powerful punch of effects. As a result of its high THC level, users get long-lasting, hard-hitting, potent effects that will have them always reaching for this one. Additionally, this strain has moderate levels of CBD, making it ideal as a medical-grade strain.

Is G13 a Hybrid?

Smokers who are searching for hybrid strains hit pay dirt when they come across G13. This indica-dominant strain provides smokers with a wonderful 70% indica and 30% sativa content. Hybrids have increasingly become more popular since smokers often don’t want to choose between an indica vs sativa, so they get some of each with G13.

Indicas are associated with unwinding and relaxing, making them perfect for those Netflix-and-chill type nights. Sativas, on the other hand, are closely tied to bursts of energy for a morning wake-and-bake session. So, imagine if you get a bit of each—you end up with something dynamic like the G13 strain!

What is G13’s Flavor and Fragrance?

Regarding this indica’s terpene profile, carene jumps out, providing citrusy notes to give G13 a bit of fruitiness, sweetness, and tartness. Pinene adds a piney, woodsy flavor, while ocimene is sweet and herbaceous. Due to this mixture of terpenes, you get a flavor profile of lemon and sweet berries, which balance the natural, earthy flavor that arouses the taste buds.

While you’re growing your marijuana plants, the unmistakable skunkiness and cheesy aroma will hit your nose, so it’s not surprising that when you’re smoking, you get those same notes. The sweetness of berries and flowers will tickle your nose to bring you deeper into the experience. The creamy smoke will envelop you, with its mix of pungency and sweetness to balance out!

The Recreational Effects of G13

Thanks to this indica-dominant hybrid strain, you’re never let down when it comes to recreational psychoactive properties. Due to the sativa side of things, a cerebral buzz will hit, causing you to feel euphoric, uplifted, and on top of the world! During the early phases of smoking, your concentration will increase, providing you with greater mental clarity, especially regarding creative endeavors.

After a while, the indica side kicks in to deliver heavy body stone, coursing relaxation throughout your entire body. Next thing you know, the sedative effects take over, and that sense of couch-lock will override everything! At this point, be ready to kick back, relax, and get some good sleep!

G13’s Medicinal Effects

Weed consumers often use the G13 strain to offer temporary relief from various medical conditions. Before utilizing this strain or any other, talk to your doctor to determine if medical marijuana is appropriate for you. While there’s limited evidence on the efficacy of medical marijuana, anecdotal evidence suggests that some patients use G13 for possible pain relief, including muscle spasms and various aches.

Based on this strain’s psychoactive properties to uplift, some patients claim this strain is potentially helpful for various mood disorders like anxious feelings and negative thought spirals. Since this strain is known to make you sleepy, patients claim it can be useful when dealing with various sleep disorders. Other possible uses are for the potential to help with nausea and eating disorders.

What about G13’s adverse effects?

While the G13 strain is a popular choice for a wide range of uses, it still can cause adverse effects. For example, smokers may experience dry, cotton mouth and dry eyes. Due to its high THC content, if you smoke too much G13, you might feel anxious, dizzy, or paranoid.

What do G13 Cannabis Plants Look Like?

G13 cannabis plants grow to be medium in height and will need lots of grow space to support their vigorous growth. These weed plants feature green cannabis buds covered in amber hairs. The light blue trichomes make these cannabis plants interesting and intriguing to look at as they grow.

Cultivating the Feminized G13 Strain

Purchasing G13 feminized cannabis seeds is the first step to growing healthy female plants, which is where an online seed bank like GCS comes into play. Before you even germinate your marijuana seeds, here’s some critical info to have for a successful harvest.

Is G13 a good choice for beginner cannabis growers?

G13 is an excellent choice for more experienced growers with at least an intermediate amount of knowledge. While these weed plants do well in various cultivation environments, they require some extra care and may not be the best choice for novice growers.

What to expect from indoor growing

Indoor growing is perfect for feminized G13 seeds since indoor growers can better control the environment. With indoor cultivation, hydroponic growing is a great option as a grow medium that doesn’t involve soil. Growing weed indoors with hydroponics requires growers to keep the water at around 65 degrees F while the optimal temperature for the air should be 75 degrees or higher.

Growing cannabis indoors requires a humidity level of 70% at the beginning of the vegetative stage, but during the flowering stage, the humidity levels should be dropped to around 40%. For optimal plant health, these female plants require a lot of organic nutrients for healthy growth. Be sure to have high-quality grow lights to ensure optimal light penetration to reach all the cannabis buds.

What to expect from outdoor growing

Planting your G13 feminized weed seeds outdoors can produce healthy plants if you watch out for the environmental conditions. Remember, these female plants thrive in hot, sunny environments with a temperature range of 70 to 85 degrees F. You can feel comfortable planting these weed seeds outdoors since they are resistant to cooler temperatures.

Keep those organic nutrients coming for optimal plant health for G13 feminized seeds grown outdoors. During the vegetative growth stage, provide your female plants with 18 hours of light per day and six hours of darkness. To get your feminized G13 photoperiod plants to transition from their vegetative stage to their flowering stage you will need to switch their light cycle to a 12-12 light schedule that provides equal hours of light and darkness.

Expected flowering time

Cultivating G13 indoors has a flowering period of 70-80 days. While that might be a bit longer than strains like Blue Cookies, this indica-dominant hybrid is well worth the wait. When cultivating your G13 female plants outdoors, they should be done flowering and ready for harvest by the end of October to mid-November.

G13’s indoor and outdoor yields

One of the top reasons that cannabis growers purchase feminized G13 seeds in the first place is due to the monstrous yields they can expect. Healthy plants grown indoors reach up to 595 grams per square meter. Whereas, outdoor cannabis growers need to get ready for an unbelievable 1,300 grams per plant!

Purchasing G13 Feminized Seeds

When you choose a reputable seed bank like Growers Choice Seeds, you can purchase a wide range of cannabis seeds from G13 to Great White Shark. Best yet, even our autoflowering strains come in feminized seed form to further streamline the cultivation process. Our feminized seeds are the best way to ensure a successful harvest, so check us out and see why we are the popular choice for everybody, from novice growers to cultivation experts!

Additional information

Strain Genetics



30% Sativa, 70% Indica

Strain Type

Indica-dominant Hybrid

Flowering Time

70-80 days

THC Content


CBD Level



Euphoric, Happy, Relaxed

Indoor Yield

Up to 595 gr

Outdoor Yield

Up to 1300 gr

Best Use

Anytime, Depression, Pain


Citrus, Sweet, Woody

Flowering Type


Growing Difficulty


Where to Grow


Seed Type

Feminized Cannabis Seeds

Plant Height



Growers Choice Cannabis Seeds

Reviews for G13 Cannabis Seeds

Based on 38 Reviews
  1. Verified Owner

    This was a must buy for me and man I’m glad I did! A little slow at first but I’m not far from a great harvest!

  2. Verified Owner

    A unique hybrid strain that’s done wonders for my depression and anxiety. I smoke this in the afternoons, sometimes on my lunch break, to avoid the 3 pm crash. I find that it both energizes me and relaxes me at the same time. It’s been an interesting experience growing in giant planters outdoors. The smells alone get me to that higher place. It can only be described as skunky forest….or something to that extent. I trust Grower’s with my mj seeds. They’re always on-point with delivery and germiantion!!

  3. Verified Owner

    Has done wonders for my depression. Shipped right to my place in BC, Canada! Took me about 5 months start to finish. Very nice sized nugs, some the size of my hand. Great harvest!

  4. Verified Owner

    Excellent harvest! JUST cut down the plants and are hanging them for curing/drying in my basement for the week. Cant wait to smoke these amazing and delightful NUGZZZZ!

  5. Verified Owner

    I have ordered from other cannabis seed banks, and don’t get me wrong–I’ve had very few negative experiences with any of them. But, I’ve gotta tell you that out of the MANY places I’ve ordered from, GCS is hands down THE BEST in every way. Oh, and G13? It’s a total must.

    Jiro H., Kahului, HI

  6. Verified Owner

    Get ready to smile with G13 seeds from GCS! This Sativa hybrid is amazing for melting away stress and anxiety and busting out laughing with your friends.
    Not too difficult to grow. It’s super convenient and fast shipping, the seeds arrive in a golden sealed package and are ready to grow!
    Excellent yields and strong pungent flavor YUMMM!

  7. Verified Owner

    An unplanned adventure, I randomly decided to buy 10 seeds online and have them shipped to my home in WA! I have no experience with growing weed, but so far, it’s been going pretty well. The plants are much more compact than I had anticipated, and actually produce way more nug than I thought! This is some sticky, fresh, crystalline nug. It’s truly magnificent, and I am just thrilled to have access to this GREAT seed bank!

  8. Verified Owner

    Best g13 out there

  9. Verified Owner

    Thank you growers choice

  10. Verified Owner

    Best seeds in the world

  11. Verified Owner

    G13 just does wonders for my stress, anxiety and depression. I feel like myself again 🙂

    Buying online is easy and generally pain-free. The prices are very agreeable, and they result in some incredible looking weed. Fresh and tasty, can’t wait to start smoking this latest batch. It’s looking MINT!

  12. Verified Owner

    Thank you gcs for the best seeds out there

  13. Verified Owner

    G13 really is one of the best hybrids around. It’s one of those strains that will totally relax you while at the same time put a smile on your face.
    Gotta also say that GCS has such an incredible selection of seeds, and their customer service is solid!

    Bahar S., Detroit, MI

  14. Verified Owner

    Best g13 in the world

  15. Verified Owner

    Thanks Gc for the amazing seeds

  16. Verified Owner

    Fast shipping to Canada and reliable results. G13 is a winner, and always produces enough flower to last me through winter!

  17. Verified Owner

    Best g13 in the world

  18. Verified Owner

    Best g13 every

  19. Verified Owner

    Thank growers choice

  20. Verified Owner

    Growers choice is the best

  21. Verified Owner

    Honestly, I am in it for the stoney vibes and relaxation and G13 delivers. Thanks GCS!

  22. Verified Owner

    Big yield off just 3 plants….I have enough weed here to last me through the winter. Just finished harvesting this afternoon actually. Was an exhaustive process, and gunked up all my pruning tools LOL! Just wanted to write in and say thanks for another successful year. Great seeds everytime!

  23. Verified Owner

    Very impressed with the potency and effects of G13. It produced a great yield and was relatively easy to grow, with healthy plants that provided a smooth and relaxing high. The taste was earthy and skunky, making for a great smoking experience. Would definitely recommend.

  24. Verified Owner

    G13. I was blown away by how potent this strain was in relieving my pain and stress. The euphoric and happy high was a bonus, and the citrus and sweet taste made it a pleasurable smoking experience. Highly recommend this strain from Growers Choice Seeds.

  25. Verified Owner

    So much love for G13 MJ. You may have never heard of this mysterious strain, but don’t let that stop you! It’s a great grow, usually very cooperative and adaptable in both indoor and outdoor environments. You can treat it as a summer hobby! The seeds always germinate in my experience, and all you gotta go is follow GCS comprehensive germination guide for exceptional results. They really want you to succeed. So take the jump and start growing your own MJ!

  26. Verified Owner

    For the perfect Indica-focused hybrid experience G13 has you covered. This weed gives an amazing high for knocking out stress. Ended up with good-sized plants with a good size harvest after about 12 weeks of growing. So quite a bit of work but this high is easily worth it.

  27. Verified Owner

    The buds are large and dense, with a pleasant aroma of skunky earth and undertones of pine. When smoked, produced potent effects that left me feeling relaxed and happy. Perfect for anyone who wants an easy-to-grow strain that has a powerful effect on the mind and body. Pick up some today, then sit back, relax, and enjoy!

  28. Verified Owner

    G13 Feminized Seeds from Growers Choice Seeds are a must-try for both smokers and growers. With a high THC content of 22% and an easy-to-grow profile, G13 is perfect for combating stress and depression. This indica-dominant hybrid delivers deep sedation and a boost in mood, making it a favorite among medical and recreational users. Its vibrant fragrance of wild blueberries adds to the overall experience.

  29. Verified Owner

    Growers Choice Seeds customer service really helped me out. They were quick to respond and provided me with all the information I needed. Shipping was fast too! As for G13, it’s a strain that brings euphoria, happiness, and relaxation. The flavor is a delightful mix of citrus, sweetness, and a hint of woody undertones. Perfect for anytime use and great for relieving depression, pain, and stress.

  30. Verified Owner

    Really happy with the potency of this strain, definitely a strong high that hits you hard. The buds are nice and dense and the yield was great for the amount of plants I had. This strain is definitely worth trying for those looking for a heavy high.

  31. Verified Owner

    G13 is a fantastic strain for anyone who needs some relief from depression, pain, or stress. I found the euphoric and happy effects to be uplifting and energizing. The body high was also really nice and relaxing without making me too sleepy.

  32. Verified Owner

    I’m convinced that G13 Feminized Seeds are grown on another planet. One hit and I was transported to a world of giggles and munchies. If you want to have a blast, I highly recommend to give this grow a shot

  33. Verified Owner

    G13 is my go-to strain for relaxation and stress relief. The citrus and sweet flavors make it a delight to smoke, and the euphoric and relaxed effects are exactly what I need after a long day. It’s also great for managing my chronic pain and depression.

  34. Verified Owner

    This is your next favorite weed! G13 might be a rarity, but its not to be missed! I purchased 10 seeds online, and I really didn’t know what to expect. I got the seeds in just under a week, I live in southern Cali, and I love growing out here. Perfect in my little backyard garden, and makes my whole head feel light and dizzy in the best way!

  35. Verified Owner

    With its potent THC content and delightful fragrance of wild blueberries, this strain is a guaranteed mood booster. It’s perfect for melting away stress and depression. Plus, the obscene yield makes it a dream for any budding ganja gardener. Get ready to smile and unwind with G13!

  36. Verified Owner

    G13 Feminized Seeds from Growers Choice Seeds offer an easy-to-grow profile and a potent indica-dominant hybrid strain with 22% THC. Known for its ability to fight stress and depression, this super-hybrid has gained popularity in both the medical and recreational cannabis communities. With vibrant fragrance and a high yield, G13 is a must-have addition to any ganja garden.

  37. Verified Owner

    Easy to grow and gets even the most experienced stoner blazed out of your mind!!! Usually scores between 22-25% THC and stays really fresh (if stored correctly) for MONTHS! I am an outdoors grower but usually start my seeds indoors. It’s a lengthy process achieving 100% germination. Everyone on here makes it seem like a guarantee, but this is easily the hardest part of any grow. I appreciate all the help GCS provides its growers in getting good germination, but if you’re not dedicated my friends….your seeds may fail 🙁

  38. Verified Owner

    I bought G13 on a whim and I gotta say it has changed my whole life! I am OBSESSED with growing my own MJ now and will be doing so for the rest of my LIFE! It’s so cool GCS ships all over the USA and QUICKLY! This strain is a great indica hybrid that grows over 5′ in height. Great for pain, stress, and anxiety. I’ll be buying more for this summer!

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