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G13 is a heritage indica-leaning hybrid carrying long-running cannabis folklore, finishing in 8β9 weeks with a kushy, earthy-pine profile and dense, resin-coated buds. 20β24% THC. Ships discreetly with a 90% germination guarantee.
Strong effects - use with caution
How this strain's effects compare to average hybrid strains
G13 stands out from average hybrid strains in 3 of 5 experience categories
G13 is a heritage indica-leaning hybrid in The Seeds Depot catalog. The strain's origin is the subject of long-running cannabis folklore β the most-repeated story places it in a 1970s research program at the University of Mississippi, with cuttings supposedly removed and circulated outside the program. Whether or not that origin is accurate, the genetics that travel under the G13 name today carry a consistent, recognizable profile and have been a parent in dozens of well-known modern crosses.
Visually, G13 finishes with dense, medium-sized buds in deep forest green, accented by bright orange pistils and a heavy trichome coating. The aroma leans earthy and woody, with sweet undertones and an unmistakable kushy finish. Smoke is smooth and the flavor follows the aroma β earth, soft pine, and a touch of sweetness on the exhale.
The experience is heavy and physical. Listed primary descriptors include relaxed, euphoric, and happy. G13 is a classic evening or late-afternoon strain β most users find it slows the day down rather than accelerating it.
THC commonly tests in the 20β24% range with CBD around 0.1β0.5%. Flowering window is 8β9 weeks indoors. Difficulty is moderate; G13 is a vigorous grower and tolerates a range of conditions, which is part of why the genetics have stayed in circulation for decades.
**Ordering & shipping.** G13 feminized seeds ship in opaque, vacuum-sealed mylar inside unmarked first-class US packaging. Free US shipping is available on qualifying orders, and every pack is backed by our 90% germination guarantee β failed seeds replaced free with photo proof submitted within 14 days of receipt.
**Storage.** Keep sealed in the original mylar at 40β50Β°F. Sealed viability is 3β5 years; once opened, germinate within 12 months for best results.
**Lineage:** Origin debated; widely believed to descend from Afghani Γ Thai landrace stock isolated in a 1970s research program
**Strain type:** Indica-leaning hybrid
G13's origin story is part of cannabis folklore β there's no definitive published lineage. What's well-documented is that the genetics circulating under the G13 name today consistently produce a kush-leaning, earthy profile with a heavy resin coat, and the cut has been used as a parent in dozens of modern hybrids (G13 Haze, G13 Widow, etc.).
Each G13 seed pack ships with:
- Feminized photoperiod cannabis seeds (or autoflower where noted)
- Vacuum-sealed opaque mylar pouch
- Lot/batch ID card
- Printed germination guide (paper-towel method)
- Tracking number sent on dispatch
Pack sizes available: 5, 10, and 25 seeds. Per-seed cost decreases at higher pack tiers β the largest pack typically runs around 30β35% lower per seed than the smallest.
**Difficulty:** Moderate.
**Indoor:** 70β80Β°F with steady airflow. Tolerates a range of conditions β part of why the genetics have stayed in circulation for decades.
**Outdoor:** full sun in well-draining soil. Vigorous and resilient.
**Flowering window:** 8β9 weeks indoors.
**Harvest cue:** mostly milky trichomes with 10β20% turning amber.
G13 seeds are guaranteed at a 90% germination rate using the wet paper towel method:
1. Soak seeds in distilled water for 12β18 hours.
2. Place between two damp paper towels on a plate.
3. Cover and store at 70β80Β°F.
4. Most seeds crack within 2β4 days.
If any seed fails to germinate within 14 days under these conditions, send a photo to support and we'll ship a free replacement β no questions asked.
- **Packaging:** G13 seeds ship in opaque vacuum-sealed mylar inside an unmarked first-class US envelope. No exterior branding identifies the contents.
- **Dispatch:** orders placed by 2pm ET ship the same business day, MonβFri.
- **Transit:** typically 3β5 business days within the continental US.
- **Tracking:** every order ships with a tracking number, sent by email at dispatch.
- **Free shipping:** available on orders over the qualifying threshold (see cart for the current offer).
G13 seeds keep best in their original mylar pouch:
- **Temperature:** 40β50Β°F (a standard refrigerator, not the freezer)
- **Humidity:** the sealed mylar maintains the proper level β do not open the pouch until ready to germinate
- **Light:** keep away from direct light
- **Sealed viability:** 3β5 years from date of packaging
- **Once opened:** germinate within 12 months for best results
Common questions answered by our experts
G13 is a Hybrid strain.
G13 tests at 20-24% THC by laboratory analysis of mature flower.
G13 contains 0.1-0.5% CBD.
G13 has a flowering time of 8-9 weeks indoors under standard 12/12 photoperiod.
G13 carries aromatic notes of Earthy, Pine, Sweet.
G13 is Myrcene-dominant, which contributes an earthy, musky aroma.
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