What is the main difference between Critical Mass and G13?

Critical Mass is a Indica strain (80% Indica / 20% Sativa) with THC levels of 19–22%, while G13 is a Indica strain (70% Indica / 30% Sativa) with THC levels of 22–24%.

Which strain has higher THC — Critical Mass or G13?

G13 has higher THC at 22–24%, compared to Critical Mass at 19–22%.

What effects does Critical Mass have compared to G13?

Critical Mass produces relaxing, sleepy, tingling, euphoric, happy effects, ideal for evening use. G13 produces euphoric, happy, relaxing, sleepy, uplifting effects, best for evening use.

What terpenes are in Critical Mass and G13?

Critical Mass features Myrcene, giving it citrus, honey, skunk flavors. G13 features , with pine, sweet, woody flavors.

Which medical conditions can Critical Mass and G13 help with?

Critical Mass may help with add/adhd, arthritis, chronic pain, depression, fatigue, fibromyalgia, inflammation, insomnia, nausea, stress, pain, anxiety. G13 may help with anxiety, arthritis, depression, glaucoma, headaches, insomnia, migraines, ptsd, stress. Consult a healthcare professional before using cannabis for medical purposes.

Strain Encyclopedia

Critical Mass

Indica — THC 22%

G13

Indica — THC 24%

Potency, effects, terpenes, flavors, growing difficulty, and medical uses — compared side by side.

Home/Strain Comparisons/Critical Mass vs G13

Quick Verdict

Who wins in each category?

⚡

Potency

G13

🏥

Medical

Critical Mass

🌱

Growing

Critical Mass

🍋

Flavor

Critical Mass

Strain Profile Comparison

Six-axis profile overlay — see where each strain excels

Critical Mass

G13

Effect Matchup

Side-by-side effect intensity — bars show relative prominence

Critical Mass

Effect

G13

100%

Relaxing

77%

68%

Euphoric

100%

88%

Sleepy

68%

60%

Happy

88%

53%

Uplifting

60%

77%

Tingling

46%

Body-buzz

5 shared effects highlighted

Critical Mass — Potency

THC0%

CBD0%

Potency LevelStrong

G13 — Potency

THC0%

CBD0%

Potency LevelStrong

Afghani x Skunk #1Critical Mass

Indica 80%Sativa 20%

Afghani Indica SelectionG13

Indica 70%Sativa 30%

Side-by-Side Specs

Green highlight indicates the superior value

Critical Mass

Profile Comparison

Shared (5)

RelaxingSleepyEuphoricHappyUplifting

Only Critical Mass (2)

TinglingBody-buzz

Possible Side Effects

Only Critical Mass

Dry mouthDry eyesAnxious

Growing Guide Comparison

Critical Mass

PhotoperiodPhotoperiod

Growing MethodIndoor, Outdoor

G13

PhotoperiodPhotoperiod

Growing MethodIndoor, Outdoor

About These Strains

Critical Mass

Indica 80/20 — THC 19–22% — CBD 5–5%

Critical Mass is an indica dominant hybrid (80% indica/20% sativa) strain that's a cross between the iconic Afghani X Skunk #1 strains. This bud gets its name from the tendency of branches to break under the weight of the insanely dense buds.

It's not uncommon for growers to find branches of their Critical Mass plants littering the floors of their greenhouses.

G13

Indica 70/30 — THC 22–24%

G13, also known as “ G-13” or “Government Indica Strain 1,” is an indica dominant hybrid (70% indica/30% sativa) strain with unknown parentage. This bud is rumored to have been created by the US Government during the 60's and 70's when they were experimenting with growing native Afghani weed strains for “medical” purposes.

Despite its confusing origins, G13 is definitely one bud that you should try at least once in your life, especially given its powerful effects and insanely potent 24% average THC level.

Which One Is Right for You?

Critical Mass and G13 are both excellent strains with distinct characteristics. Critical Mass is a Indica with 19–22% THC, while G13 is a Indica with 22–24% THC. Your choice depends on your preference for effects, growing difficulty, and intended use.

Choose Critical Mass

Choose Critical Mass if you want easier growing, higher CBD for medical use, broader medical applications. Critical Mass is an indica dominant hybrid (80% indica/20% sativa) strain that's a cross between the iconic Afghani X Skunk #1 strains.

Choose G13

Choose G13 if you want higher THC potency. G13, also known as “ G-13” or “Government Indica Strain 1,” is an indica dominant hybrid (70% indica/30% sativa) strain with unknown parentage.

Frequently Asked Questions

Common questions about Critical Mass vs G13

Medical Disclaimer

The information on this page is for educational purposes only and is not intended as medical advice. Cannabis affects everyone differently. Consult a qualified healthcare professional before using cannabis for any medical condition. Effects, potency, and medical benefits may vary. Do not use cannabis if pregnant, nursing, or under the legal age in your jurisdiction.

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