What are the effects of G13?

G13 produces Relaxed, Euphoric, Happy, Sleepy, Body-High effects. It is a Indica strain commonly used for Insomnia, Pain, Stress.

How much THC does G13 have?

G13 typically contains 20–28% THC, making it extremely potent. CBD content is approximately 0.3%.

Is G13 indica or sativa?

G13 is a Indica cannabis strain. Indica strains typically produce relaxing, sedating body effects ideal for evening use.

What terpenes are in G13?

The dominant terpenes in G13 are Myrcene, Pinene, Beta-Caryophyllene. These contribute to its unique aroma, flavor, and effects.

How long does G13 take to flower?

G13 has a flowering time of 8–9 weeks. It is rated moderate to grow and produces a moderate-high yield.

What strains were crossed to make G13?

G13 was bred by crossing Unknown Afghan Indica. This genetic lineage contributes to its unique characteristics.

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🍇 Indica🔥 THC 20–28%🔴 Very High Potency🔴 Experienced

⚡ THC28%

💙 CBD0.3%

Quick Facts

TypeIndica

RatioIndica-Dom

THC Range20–28%

CBD0.3%

CBN~0.2%

CBG~1%

THCV~0.2%

Flowering8–9 weeks

DifficultyModerate

YieldModerate-High

HeightMedium

ParentsUnknown Afghan Indica

G13

Q: What is G13 used for medically?

G13 is commonly used to help with Insomnia, Pain, Stress, Anxiety, Muscle Spasms. Always consult a healthcare professional before using cannabis for medical purposes.

4.3

★★★★★

6 reviews

·🍇 Indica

G13 is one of cannabis culture's most mythologized strains. Legend claims it was developed by the US government in the 1960s as the world's most potent indica. Whether true or not, G13 delivers: a heavy, resinous indica with one of the most powerful body highs ever recorded and THC levels reaching 28%.

THC Range

20–28%

CBD

0.3%

Flowering

8–9w

🧬 Indica / Sativa Ratio

Indica

Sativa

80%Indica-Dom20%

🌱 Genetics & Lineage

Unknown Afghan Indica→✨ G13

G13 was bred by crossing Unknown Afghan Indica.

🔬 Full Cannabinoid Profile

Minor cannabinoids contribute to the entourage effect — enhancing and modulating the impact of THC and CBD.

THC

28%

Primary psychoactive

CBD

0.3%

Non-psychoactive, balancing

CBN

~0.2%

Sedating, sleep aid

CBG

~1%

Anti-inflammatory

THCV

~0.2%

Energizing, appetite suppressant

CBC

~0.3%

Anti-inflammatory, mood

* Cannabinoid values are AI-estimated based on genetics. Exact levels vary by batch and grow conditions.

✨ Positive Effects

😌

Relaxed

Deep physical and mental relaxation. Perfect for unwinding after a stressful day or easing muscle tension.

🤩

Euphoric

Intense feelings of happiness and wellbeing. One of the most sought-after cannabis effects.

😄

Happy

Elevates mood and promotes feelings of joy, contentment, and overall wellbeing.

😴

Sleepy

Promotes drowsiness and helps you fall asleep faster and stay asleep longer.

🌿

Body-High

⚠️ Possible Side Effects

Based on user reports and strain profile. Individual experiences may vary.

💧 Dry Mouth👁️ Dry Eyes⚠️ Dizziness⚠️ Couch-Lock

🔥 How to Consume G13

🚬

SmokingRecommended

Classic and fast-acting. Effects hit within minutes. Great for precise dosing.

💨

VaporizingGreat

Cleaner than smoking, preserves terpenes better. Smoother experience with full flavor profile.

🍪

EdiblesWorks

Strong THC — go very slow with edibles. Effects can be intense and last 4–8 hours.

🌿

Joints / BluntsRecommended

Social and smooth. Perfect for a relaxing evening smoke.

🫧

Bong / PipeWorks

Delivers a potent hit — recommended for experienced users only.

💎

Concentrate / DabWorks

Highly concentrated — only for experienced consumers. Intense and immediate effects.

👃 Aroma

🌫️ Earthy🌫️ Piney🌫️ Woody🌫️ Herbal

👅 Flavor

🍋 Sweet

💊 Reported to Help With

✅ Insomnia✅ Pain✅ Stress✅ Anxiety✅ Muscle Spasms

⚠️ These are user-reported effects, not medical advice. Always consult a healthcare provider.

🧬 Terpene Profile

Terpenes give G13 its distinctive aroma and contribute to its effects through the entourage effect.

🫚MyrceneDominant

Earthy, musky. The most abundant terpene in cannabis. Promotes relaxation and sedation. Also found in mangoes and hops — eating mango before consuming cannabis may intensify effects.

🌲PineneSecondary

Pine, fresh, earthy. May promote alertness and memory retention. Acts as a bronchodilator (opens airways). Found in pine needles, rosemary, and basil.

🌿Beta-CaryophylleneSecondary

🌿 Growing G13

G13 is a moderate-to-grow indica that flowers in 8–9 weeks. Plants reach a medium height with a moderate-high yield. A good choice for intermediate growers.

Difficulty

🟡 Moderate

Yield

🤑 Moderate-High

Height

📏 Medium

Flowering

⏱ 8–9w

🏡 Best Grow Environments

🏠

Indoor

Thrives indoors — compact size makes it easy to manage

🌤️

Outdoor

Does well in warm, dry climates

🐛 Pest & Disease Susceptibility

🕷️ Spider Mites(Medium)🐛 Aphids(Medium)🍂 Bud Rot(Medium)🍄 Powdery Mildew(Low)

🌱 Ready to grow G13?

Find feminized, autoflowering, and regular G13 seeds from trusted seed banks. Solid choice for intermediate growers.

Find Seeds →

❓ People Also Ask About G13

🔍 What is the real story behind G13?

The most popular legend says G13 was bred by the US government at the University of Mississippi in the 1960s, with a cutting allegedly stolen by a lab technician. The truth is unverifiable, but G13's extraordinary potency is very real.

🔍 What does G13 taste and smell like?

G13 has a classic earthy, piney indica aroma with woody and herbal undertones. The flavor is smooth and resinous with a slightly sweet herbal finish — deep, rich, and old-school.

🔍 What kind of high does G13 produce?

G13 delivers an intensely relaxing, heavy body high with a warm euphoric mental buzz. It's a couch-lock strain best used in the evening or before bed. Beginners should use caution with its 28% THC ceiling.

🔍 What is G13 used for medically?

G13 is highly effective for insomnia, chronic pain, muscle spasms, and severe anxiety. The deep body stone and sedative effects make it one of the most medically potent indicas available.

🔍 How does G13 compare to Northern Lights?

Both are legendary heavy indicas, but G13 is reportedly stronger and more resinous. Northern Lights is mellower with a sweeter flavor; G13 is earthier, more intense, and produces a deeper body lock.

⭐ User Reviews

4.3

★★★★★

6 reviews

5★

50%

4★

33%

3★

17%

2★

1★

Keisha C.✓ Verified

📍 Vermont·44 reviews·Since 2019

🌿 Recreational

★★★★★5.0

Nov 18, 2024

"Lives up to the hype"

Flavor is something else — really distinct and hits clean every time. Effects are consistent too. Not a one-hit wonder, it delivers every session.

CreativeStress Relief

Helpful?

Drew W.

📍 Amsterdam·54 reviews·Since 2022

🪴 Grow

★★★★★3.0

Jan 3, 2025

"Easy first grow, great result"

Grew 4 plants outdoors this past season. They got big fast and the buds were dense and fragrant. Trimming was tedious but the end product made it worth it.

Body HighTalkative

Helpful?

Reed W.✓ Verified

📍 Illinois·35 reviews·Since 2020

🌿 Recreational

★★★★★5.0

Jan 11, 2024

"Surprised me big time"

Picked this up last weekend and was blown away right away. The effects came on smooth and lasted a solid 2–3 hours. Really great for unwinding after a long stressful week.

Anxiety ReliefEuphoric

Helpful?

Maria W.✓ Verified

📍 Alaska·30 reviews·Since 2021

🌿 Recreational

★★★★★5.0

Mar 3, 2024

"Don't sleep on this one"

Three sessions in and I'm a convert. First hit you feel the body relax, then the head clears out nicely. Not too heavy, not too light — right in the sweet spot.

Anxiety ReliefHead High

Helpful?

Priya Q.✓ Verified

📍 Washington·37 reviews·Since 2018

🌿 Recreational

★★★★★4.0

Jul 31, 2025

"My new go-to"

Tried this at a friend's place first and immediately went and grabbed my own. The terpene profile really shines through — smells incredible and tastes just like it.

Pain ReliefSleepyBody High

Helpful?

Tanya M.

📍 Oregon·16 reviews·Since 2021

🪴 Grow

★★★★★4.0

Jul 16, 2025

"Grew it outdoors — loved it"

Followed a basic grow guide and ended up with a solid first harvest. Doesn't demand much attention which is perfect for people still learning the basics.

GigglyBody High

Helpful?

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G13

🌱 Genetics & Lineage

✨ Positive Effects

⚠️ Possible Side Effects

🔥 How to Consume G13

👃 Aroma

👅 Flavor

💊 Reported to Help With

🧬 Terpene Profile

🌿 Growing G13

❓ People Also Ask About G13

⭐ User Reviews

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