G13
aka G-13, G Thirteen, Government Indica Strain 13, Government Indica Strain 1, G13 Afghani Indica, Government, Greenhouse number 13
G13 is a legendary indica-dominant hybrid (70/30) with mysterious government research origins dating to the 1960s-70s. Bred by Nevil Schoenmakers from Afghani genetics, it delivers powerful euphoria followed by deep physical relaxation. With 16-24% THC and limonene-dominant terpenes, it offers earthy, pine, and citrus flavors with sweet berry notes. The strain excels for evening use, providing stress relief, pain management, and sleep support. Its dense, trichome-frosted buds and potent effects make G13 a cannabis icon cherished by experienced consumers seeking profound relaxation and therapeutic benefits.
Quick Hits
These are approximate averages from community data. Your actual product's THC/CBD varies by batch, grower, and growing conditions.
Scan your label for exact values →Classification based on genetic lineage. Note: Recent research shows indica/sativa labels don't predict effects—terpene profiles do.
The dominant aromatic compound shaping this strain's effects and flavor profile. Terpenes work with cannabinoids to create your unique experience.
Recommendation based on typical effects. Morning strains tend to energize; evening strains tend to relax. Your experience may vary.
When this strain was first cultivated or its genetic origin decade. Heritage strains often have more stable, established genetics.
Market availability based on dispensary listings and community data. Rare strains may require searching specialty dispensaries.
Strain Highlights
Key insights at a glance
Professor High Says...
In-depth strain breakdown from our cannabis expert
Experiencing G13 is like slowly sinking into the world's most comfortable chair while your mind floats on a gentle euphoric cloud. The initial wave hits with this crystalline clarity—thoughts become vivid and colorful, creativity sparks like tiny fireworks, and suddenly every muscle you didn't realize was tense begins to unclench methodically from head to toe. It's fascinating how the limonene creates this bright, uplifting headspace even as your body melts into pure relaxation. The Afghani genetics show their power about twenty minutes in—you feel this deep gravitational pull that's not sedating so much as profoundly peaceful. Pain signals seem to fade into background noise, stress dissolves like sugar in warm tea, and time... well, time becomes wonderfully irrelevant. What strikes me most is the quality of the body relaxation—it's not numbing or disorienting, but rather like every cell is exhaling simultaneously. The appetite stimulation is undeniable, and sleep arrives naturally once you surrender to it. This is indica mastery demonstrating how terpene synergy and genetics create experiences that transcend simple intoxication into genuine therapeutic relief.
Effects Profile
Best enjoyed during night
Deep relaxation and sleep
Best For
Effect Sources
- 1G13 Cannabis Strain Information - GrowDiariesgrowdiaries.com
- 2G13 Weed Strain Guide: Terpenes and Effects of G-13 Strainhometownhero.com
- 3G-13 Marijuana Strain Review 2026 | The Cannigmacannigma.com
- 4G13 Strain - Indica Cannabis Review, 24.38% THC,5.3mg/g Limonenehytiva.com
- 5G13 Strain: Legendary Indica-Dominant Hybrid Overviewinheal.com
- 6How to Grow G13 Strain: Cultivating Strain G13blimburnseeds.com
- 7G13 Cannabis Strain Information & Reviewilovegrowingmarijuana.com
- 8G13 - Strain Information - CannaConnectioncannaconnection.com
- 9G13 Marijuana Strain Information & Reviewsallbud.com
- 10G13 | Weed Straincannabislinkinc.com
- 11G13 Strain Autoflowering Feminized Marijuana Seedsvancouverseedbank.ca
- 12G13cannabis.net
- 13G13 Strain – A power punch of taste and aromacollective-cannabis.com
- 14G13 aka G-13, G Thirteen Weed Strain Informationleafly.com
- 15G13 aka G-13, G Thirteen Weed Strain Information | Leaflyleafly.ca
- 16nuggmd.comnuggmd.com
- 17G13 - HelloMDhellomd.com
- 18G13 Haze Weed Strain Information | Leaflyleafly.com
- 19dnagenetics.comdnagenetics.com
19 verified sources
Side Effects
Side effects vary by individual. Start low, go slow. Consult a healthcare professional with concerns.
These are commonly reported effects. Individual experiences may vary based on dosage, tolerance, and consumption method.
Aroma & Flavors
Aroma & Flavor Sources
- 1G13 Cannabis Strain Information - GrowDiariesgrowdiaries.com
- 2G13 Weed Strain Guide: Terpenes and Effects of G-13 Strainhometownhero.com
- 3G-13 Marijuana Strain Review 2026 | The Cannigmacannigma.com
- 4G13 Strain - Indica Cannabis Review, 24.38% THC,5.3mg/g Limonenehytiva.com
- 5G13 Strain: Legendary Indica-Dominant Hybrid Overviewinheal.com
- 6How to Grow G13 Strain: Cultivating Strain G13blimburnseeds.com
- 7G13 Cannabis Strain Information & Reviewilovegrowingmarijuana.com
- 8G13 - Strain Information - CannaConnectioncannaconnection.com
- 9G13 Marijuana Strain Information & Reviewsallbud.com
- 10G13 | Weed Straincannabislinkinc.com
- 11G13 Strain Autoflowering Feminized Marijuana Seedsvancouverseedbank.ca
- 12G13 Strain – A power punch of taste and aromacollective-cannabis.com
- 13G13 aka G-13, G Thirteen Weed Strain Informationleafly.com
- 14G13 aka G-13, G Thirteen Weed Strain Information | Leaflyleafly.ca
- 15nuggmd.comnuggmd.com
- 16G13 - HelloMDhellomd.com
- 17dnagenetics.comdnagenetics.com
17 verified sources
Aromas
Flavors
Appearance
Color Palette
Texture
Dense, chunky indica structure with tightly packed calyxes. Buds feel slightly sticky with heavy resin coverage. Breaks apart easily when properly cured, releasing pungent aromas.
Crystal Density
very high
Exceptional crystal coverage
Terpene Profile
Partially VerifiedTerpene Sources
- 1G13 Cannabis Strain Information - GrowDiariesgrowdiaries.com
- 2G13 Weed Strain Guide: Terpenes and Effects of G-13 Strainhometownhero.com
- 3G-13 Marijuana Strain Review 2026 | The Cannigmacannigma.com
- 4G13 Strain - Indica Cannabis Review, 24.38% THC,5.3mg/g Limonenehytiva.com
- 5G13 Cannabis Strain Information & Reviewilovegrowingmarijuana.com
- 6G13 Strain Autoflowering Feminized Marijuana Seedsvancouverseedbank.ca
- 7G13 Strain – A power punch of taste and aromacollective-cannabis.com
- 8G13 aka G-13, G Thirteen Weed Strain Informationleafly.com
- 9G13 aka G-13, G Thirteen Weed Strain Information | Leaflyleafly.ca
- 10nuggmd.comnuggmd.com
- 11G13 Haze Weed Strain Information | Leaflyleafly.com
- 12dnagenetics.comdnagenetics.com
12 verified sources
Terpene Distribution
LimoneneDominant
Flavor: Citrus, lemon, orange
Full Profile
Limonene
0.53 %
Flavor Profile:
Citrus, lemon, orange
Effects:
Linalool
0.48 %
Flavor Profile:
Floral, lavender, sweet
Effects:
Caryophyllene
0.43 %
Flavor Profile:
Spicy, peppery, woody
Effects:
Humulene
0.33 %
Flavor Profile:
Hoppy, woody, earthy
Effects:
Pinene
0.28 %
Flavor Profile:
Pine, fresh forest
Effects:
Ocimene
0.26 %
Flavor Profile:
Sweet, herbaceous, woody
Effects:
Myrcene
0.25 %
Flavor Profile:
Earthy, musky, fruity
Effects:
Carene
0.23 %
Phellandrene
0.16 %
Cannabinoid Profile
Both THC and CBD present (5-15% each) - Medical/wellness focused
Medical Effects
Medical Effect Sources
- 1G13 Cannabis Strain Information - GrowDiariesgrowdiaries.com
- 2G-13 Marijuana Strain Review 2026 | The Cannigmacannigma.com
- 3G13 Strain - Indica Cannabis Review, 24.38% THC,5.3mg/g Limonenehytiva.com
- 4How to Grow G13 Strain: Cultivating Strain G13blimburnseeds.com
- 5G13 Cannabis Strain Information & Reviewilovegrowingmarijuana.com
- 6G13 Marijuana Strain Information & Reviewsallbud.com
- 7G13 | Weed Straincannabislinkinc.com
- 8G13cannabis.net
- 9G13 Strain – A power punch of taste and aromacollective-cannabis.com
- 10G13 aka G-13, G Thirteen Weed Strain Informationleafly.com
- 11G13 aka G-13, G Thirteen Weed Strain Information | Leaflyleafly.ca
- 12nuggmd.comnuggmd.com
- 13G13 - HelloMDhellomd.com
- 14G13 Haze Weed Strain Information | Leaflyleafly.com
- 15dnagenetics.comdnagenetics.com
15 verified sources
Mental Effects
- •Anxiety Relief
Reduces anxiety and promotes calm without heavy sedation
- •Stress Relief
Alleviates stress and tension throughout the body
- •Depression Management
Elevates mood and provides emotional uplift
- •PTSD Support
Helps manage post-traumatic stress symptoms
Professor High visualization
Body Effects
- •Pain Relief
Reduces chronic pain, arthritis, and migraines effectively
- •Insomnia Treatment
Promotes sleep and sedation for restful nights
- •Muscle Spasm Relief
Reduces muscle tension and spasm occurrence
- •Appetite Stimulation
Increases hunger and promotes gastrointestinal wellness
- •Nausea Relief
Alleviates nausea and gastrointestinal discomfort
Medical Disclaimer: This information is AI-generated based on available research and user reports, provided for educational purposes only, and is not intended as medical advice. Cannabis affects everyone differently. Consult with a qualified healthcare professional before using cannabis for medical purposes. Do not use cannabis if pregnant, nursing, or have a medical condition without consulting your doctor.
Lineage History
Lineage Sources
- 1G13 Cannabis Strain Information - GrowDiariesgrowdiaries.com
- 2G-13 Marijuana Strain Review 2026 | The Cannigmacannigma.com
- 3G13 Strain: Legendary Indica-Dominant Hybrid Overviewinheal.com
- 4G13 - Strain Information - CannaConnectioncannaconnection.com
- 5The Origins Of G13 Cannabis Strainseedsman.com
- 6G13 Strain Autoflowering Feminized Marijuana Seedsvancouverseedbank.ca
- 7G13 Strain – A power punch of taste and aromacollective-cannabis.com
- 8nuggmd.comnuggmd.com
- 9G13 Haze Weed Strain Information | Leaflyleafly.com
- 10dnagenetics.comdnagenetics.com
10 verified sources
G13 is an indica-dominant strain with Afghani genetics as its primary parent, often crossed with Haze varieties. The strain originated in the 1960s-1970s and is attributed to breeder Nevil Schoenmakers.
Genetics
Origin Timeline
First cultivated in 1977
Breeder
Nevil Schoenmakers
Seed Bank
Blimburn Seeds
Consumption Methods
Recommended Methods
Awards & Recognition
Awards & Recognition Coming Soon
We're researching competition wins and industry recognition for this strain.
Detailed Description
The Legendary G13: A Cannabis Icon Steeped in Mystery
G13 stands as one of the most mythologized strains in cannabis history, shrouded in Cold War-era conspiracy theories and government research legends. This indica-dominant hybrid (70% indica/30% sativa) has captivated enthusiasts since the 1960s-70s with its powerful effects and enigmatic origins. Whether the stories of clandestine government breeding programs hold truth or simply add to the mystique, G13 delivers an undeniably potent experience that has earned its place in the cannabis hall of fame.
🧬 Genetic Heritage & Lineage
The lineage of G13 reads like a cannabis spy novel. Most sources attribute the strain's foundation to pure Afghani genetics, bred by the legendary Nevil Schoenmakers who obtained it through mysterious circumstances in the 1970s. Some variations incorporate Maui Haze or Neville's A5 Haze into the genetic mix, creating slightly different phenotypes. The Afghani backbone provides the heavy indica foundation, while any sativa influence adds subtle cerebral uplift to what is fundamentally a body-dominant experience. The strain emerged from the 1960s-70s era of intensive cannabis breeding, allegedly as part of research conducted at the University of Mississippi—hence the "Government Indica Strain" nickname that fuels conspiracy theories to this day.
👃 Terpene Profile & Aromatics
G13's terpene profile creates a complex aromatic experience dominated by Limonene at 0.53%, which delivers bright citrus notes that cut through the earthiness. Linalool (0.48%) contributes floral, lavender-like qualities and calming properties, while Caryophyllene (0.43%) adds spicy, peppery undertones with anti-inflammatory potential. Humulene (0.33%) brings woody, hoppy notes, and Myrcene (0.25%) enhances the sedative qualities while adding herbal earthiness.
The aroma profile combines earthy, pine, and sweet base notes with surprising complexity. You'll notice citrus brightness on first encounter, followed by berry and spicy secondary notes. Some phenotypes express woody, herbal, and skunky characteristics, with pungent overtones that announce the strain's potency. The overall scent is rich, layered, and unmistakably indica-forward.
👅 Flavor Experience
The flavor journey mirrors the aromatic complexity. On initial inhale, you'll taste sweet earthiness with prominent pine notes that feel grounding and natural. The mid-palate reveals citrus brightness and subtle berry sweetness, while spicy, peppery undertones from caryophyllene create tingling sensations. The exhale leaves woody, herbal notes that linger pleasantly, with some floral qualities emerging. The flavor profile is smooth yet robust, with the earthiness providing a satisfying base that showcases the strain's Afghani heritage.
🎯 Effects & Experience
G13 delivers a powerful indica experience with THC levels ranging from 16-24% (occasionally testing higher). The onset begins within 5-10 minutes, starting with cerebral euphoria and mood elevation that quickly transitions into deep physical relaxation. Users report feeling happy, uplifted, and creative initially, before the body effects dominate.
The peak arrives at 30-45 minutes, bringing profound relaxation that spreads throughout the body. Muscles release tension, stress dissolves, and a sense of peaceful calm settles in. Many users experience increased appetite and sleepiness as effects intensify. The mental state remains euphoric without heavy cognitive impairment, though focus may wander.
Duration typically extends 2-3 hours, with lingering relaxation lasting even longer. The comedown is gentle, often leading naturally into restful sleep. Intensity is strong—this is not a beginner-friendly strain at higher doses.
🎮 Use Cases & Activities
G13 excels for evening and nighttime use. It's ideal for stress relief after demanding days, pain management when physical discomfort interferes with rest, and sleep support for those struggling with insomnia. The strain also works well for social activities in intimate settings where deep relaxation enhances conversation and connection. Creative individuals may appreciate the initial euphoric phase for artistic projects, though productivity wanes as body effects intensify. It's perfect for meditation, gentle yoga, or simply unwinding with entertainment.
💚 Medical & Therapeutic Potential
G13 offers significant therapeutic potential across multiple conditions. The strain may help with anxiety relief through its calming terpene profile, particularly linalool's anxiolytic properties. Stress management benefits from the euphoric onset and deep relaxation. Chronic pain, arthritis, and migraines may respond to the anti-inflammatory caryophyllene and overall analgesic effects. Muscle spasms and tension release under the strain's powerful body relaxation. Insomnia sufferers often find G13 highly effective for promoting sleep. Depression and PTSD symptoms may be eased by the mood-elevating properties, though individual responses vary. Appetite stimulation and nausea relief round out the medicinal applications.
👁️ Visual Characteristics
G13 buds display classic indica structure—dense, chunky, and compact with tightly packed calyxes. The primary colors feature deep forest green with purple undertones that emerge in cooler growing conditions. Secondary colors include bright orange pistils that contrast beautifully against the green backdrop, while amber and golden trichomes coat the surface heavily, creating a frosted appearance. The crystal density rates as very high, with resinous trichomes covering every visible surface. Properly cured G13 feels slightly sticky but breaks apart easily, releasing pungent aromas when handled.
📜 Cultural Context & Recognition
G13's legend status in cannabis culture stems partly from its mysterious origins and partly from genuine quality. The strain has inspired countless stories, songs, and even movies. While it hasn't won major Cannabis Cup awards in recent years, its historical significance and enduring popularity speak volumes. It remains a favorite among indica enthusiasts who appreciate its reliable effects and distinctive character. Availability has improved with modern cultivation, though true G13 genetics can still be difficult to verify.
⚠️ Consumer Considerations
Experience level: G13 suits intermediate to advanced consumers. The potency can overwhelm cannabis newcomers, potentially causing anxiety or excessive sedation. Start with small doses (one or two puffs) and wait 15-20 minutes before consuming more. Common side effects include dry mouth, dry eyes, and occasional dizziness. Staying hydrated and having eye drops available helps. Some users report mild paranoia at very high doses. The strain works best consumed 2-3 hours before desired sleep time, allowing the euphoric phase to pass before deep relaxation sets in. Avoid G13 when you need to remain alert, productive, or operate vehicles.
Research Methodology
How we compiled this strain profile
This strain profile was generated by analyzing 22 independent sources mentioning 'G13'. Our research pipeline cross-references multiple databases, lab results, and community reports to synthesize accurate strain data.
Data Quality by Section
Select what needs to be reviewed for G13:
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Strain Highlights
Key insights at a glance
Lineage History
Lineage Sources
- 1G13 Cannabis Strain Information - GrowDiariesgrowdiaries.com
- 2G-13 Marijuana Strain Review 2026 | The Cannigmacannigma.com
- 3G13 Strain: Legendary Indica-Dominant Hybrid Overviewinheal.com
- 4G13 - Strain Information - CannaConnectioncannaconnection.com
- 5The Origins Of G13 Cannabis Strainseedsman.com
- 6G13 Strain Autoflowering Feminized Marijuana Seedsvancouverseedbank.ca
- 7G13 Strain – A power punch of taste and aromacollective-cannabis.com
- 8nuggmd.comnuggmd.com
- 9G13 Haze Weed Strain Information | Leaflyleafly.com
- 10dnagenetics.comdnagenetics.com
10 verified sources
G13 is an indica-dominant strain with Afghani genetics as its primary parent, often crossed with Haze varieties. The strain originated in the 1960s-1970s and is attributed to breeder Nevil Schoenmakers.
Genetics
Origin Timeline
First cultivated in 1977
Breeder
Nevil Schoenmakers
Seed Bank
Blimburn Seeds
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