G13
Legendary strain rumored to have escaped from a government research facility. The origin story is likely myth, but the genetics are real — pure, potent indica.
- Type
- Indica
- Lineage
- Government research strain (origin debated — possibly Afghani)
- THC
- 20–24%
- CBD
- <1%
- Flower time
- 8–9 wks
- Yield
- High
- Height
- Short
- Grow difficulty
- Beginner
- Climate
- Both
Effects
Flavors & aroma
Dominant terpenes
Myrcene
Earthy, musky, ripe fruitThe most common cannabis terpene; associated with relaxing, heavy 'couch' character.
Caryophyllene
Black pepper, spice, woodThe only terpene that also binds cannabinoid receptors; peppery and warming.
Pinene
Pine, rosemary, fresh forestAssociated with alertness and clear-headedness.
Grower's notes
Very sturdy plant. Compact structure, heavy branching, fat colas. Forgiving of beginner mistakes. Excellent outdoor performer in northern climates.
Grow guides for G13
Matched to this strain's beginner difficulty, both climate, and short structure.
Setting Up the Space: Ventilation, Odor & Electrical Safety
8 min read
Indoor vs. Outdoor: Choosing How You'll Grow
8 min read
Low-Stress Training: Double Your Canopy Without Cutting
10 min read · members
SCROG: Screen of Green for Maximum Canopy
7 min read
When to Defoliate Cannabis: The Timing That Makes or Breaks It
5 min read
Your First Grow Setup: Three Budgets, Zero Regrets
9 min read
Transplanting Cannabis — When, Why, and How to Pot Up
7 min read
Companion Planting for Cannabis — Allies Your Garden Needs
7 min read · members
Living Soil & No-Till: Feed the Soil, Not the Plant
9 min read
Maximizing Bud Quality: Density, Frost, and Bag Appeal
10 min read · members
Watering in Flower: Frequency, Runoff, and the Dry-Back Cycle
7 min read
LED Grow Light Mastery: PPFD Maps, Spectrum Tuning, and DLI Optimization
11 min read · members
Late Flower and Ripening: Weeks 7–10 and the Finish Line
9 min read · members
Making Hash: Bubble Hash, Dry Sift, and Ice Water Extraction
10 min read · members
Advanced Canopy Management: Even Light, Maximum Yield
9 min read · members
Growing in Cold Climates: Western New York and the Great Lakes Season
9 min read
Micro Growing: Big Results in Tiny Spaces
8 min read
Cannabis Pest Identification: Spider Mites, Thrips, Fungus Gnats, and More
9 min read
Hermaphrodites and Nanners: How to Prevent Seeded Buds
6 min read
Bud Rot (Botrytis): Identification, Prevention, and Damage Control
7 min read
Nitrogen Toxicity: The Dark Green Claw and How to Fix It
5 min read
When to Harvest: Reading Trichomes Like a Grower
6 min read
Drying & Curing: Where Good Grows Become Great
9 min read · members
Educational profile · data varies by phenotype & grow · not medical advice · all strains