Old School OG Seeds
Old School OG Seeds are a premium 100% Indica cultivar created from the legendary cross of OG Kush × Unknown Indica. Built for growers who appreciate traditional Kush genetics, this classic variety produces dense resin-coated flowers, vigorous growth, and dependable harvests while preserving the rich aromas and flavors that made original OG cultivars famous.
With THC potential reaching up to 20% under suitable cultivation conditions, Old School OG combines dependable potency with generous flower production and excellent resin development. This feminized photoperiod variety performs reliably indoors and outdoors while producing compact, trichome-rich buds that showcase its classic Indica heritage.
For growers looking for authentic OG genetics, dependable harvest potential, and bold old-school terpene character, Old School OG delivers outstanding performance from seed to harvest.
🏆 OLD SCHOOL OG AT A GLANCE
THC Potential: Up to 20%
Variety: 100% Indica
Seed Type: Feminized
Flowering Type: Photoperiod
Genetics: OG Kush × Unknown Indica
Flowering Time: Approximately 7–9 Weeks
Environment: Indoor / Outdoor
Flavor Profile: Grape • Lemon • EarthyTHC levels, flowering time, plant size, aroma, flavor, and yields may vary depending on phenotype and cultivation conditions.
Why Choose Old School OG Seeds?
Old School OG combines legendary OG Kush genetics with a carefully selected Indica lineage to create a pure Indica cultivar recognized for dense flowers, abundant resin production, and dependable garden performance. Its combination of classic Kush flavors, manageable growth, and reliable harvests makes it an excellent choice for growers seeking traditional cannabis genetics.
🧬 Classic OG Kush Heritage
OG Kush and a carefully selected Indica parent combine to create a cultivar with outstanding pedigree, vigorous growth, and dependable structural development.
🔥 Up to 20% THC Potential
High-potency genetics capable of producing dense, resin-rich flowers under suitable cultivation conditions.
🌱 100% Indica Genetics
A true Indica cultivar prized for its compact structure, vigorous flower production, and classic Kush characteristics.
🏡 Indoor & Outdoor Versatility
Performs reliably in grow tents, greenhouses, and favorable outdoor growing environments while maintaining a manageable medium-sized structure.
Is Old School OG Right for Your Grow?
Choose Old School OG Seeds if you’re looking for a pure Indica cultivar with authentic OG genetics, dependable resin production, and excellent flower quality.
Its compact growth habit and forgiving cultivation characteristics make it suitable for growers with varying levels of experience. Those who appreciate classic grape, lemon, and earthy terpene profiles paired with dense resin-coated flowers will likely find Old School OG a rewarding cultivar to grow.
As a photoperiod variety, indoor growers can control flowering by adjusting the light schedule, allowing additional flexibility throughout the cultivation cycle.
Old School OG Genetics and Plant Characteristics
Old School OG combines the legendary OG Kush with an unknown Indica cultivar selected for its vigorous growth, dense flower production, and dependable resin development. Together, these parents create a stable cultivar that preserves many of the classic characteristics associated with traditional Kush genetics.
The resulting 100% Indica cultivar develops sturdy branching, broad dark green leaves, compact flower clusters, and abundant trichome coverage throughout late flowering. Mature plants often produce dense buds highlighted by bright orange pistils and a thick coating of frosty resin that reflects the cultivar’s premium genetic background.
As with every cannabis cultivar, individual plants may display slight differences in aroma, structure, flowering speed, coloration, cannabinoid content, and terpene expression depending on phenotype and cultivation conditions.
🧬 GENETIC PROFILE
OG Kush × Unknown Indica
↓
100% Indica
↓
Feminized • Photoperiod • Pure Indica Hybrid
Growing Old School OG Seeds
Old School OG develops into a compact to medium-sized plant reaching approximately 3–4 feet in height with sturdy branches capable of supporting dense, resin-rich flowers throughout the flowering cycle. Its naturally bushy structure makes it especially well suited to indoor cultivation while continuing to perform reliably outdoors in favorable climates.
Indoors, growers can improve canopy development through low-stress training (LST), topping, or selective pruning to increase light penetration and airflow. Maintaining temperatures between 21°C and 29°C (70–85°F) with balanced nutrition encourages healthy growth and consistent flower production.
Outdoors, Old School OG performs well in warm environments with quality soil, regular watering, and plenty of sunlight. Its natural resistance to common molds, mildew, and pests makes it a dependable option for growers seeking a forgiving cultivar.
Flowering Time, Height, and Yield Potential
Old School OG generally completes indoor flowering in approximately 7–9 weeks. Outdoor harvest timing varies according to regional climate but typically occurs during autumn under favorable growing conditions.
Plants typically reach 3–4 feet in height, making them manageable for most indoor grow spaces while still producing generous flower development. Under suitable cultivation conditions, Old School OG has the potential to produce approximately 450 g/m² indoors and up to 300 grams per plant outdoors.
Final yields depend on lighting, plant health, nutrition, environmental stability, training methods, and individual phenotype.
🌱 GROW PROFILE
Difficulty: Easy
Flowering Period: Approximately 7–9 Weeks
Expected Height: Compact to Medium, Approximately 3–4 Feet
Environment: Indoor / Outdoor
Growth Habit: Bushy Pure Indica
Recommended Training: Topping • LST • Light Defoliation
How Potent Is Old School OG?
Old School OG is considered a high-THC cultivar, with reported THC potential reaching up to 20% under suitable cultivation conditions.
Actual cannabinoid content varies according to phenotype, lighting intensity, plant health, nutrition, harvest timing, curing practices, and environmental conditions. Published THC percentages should therefore be viewed as cultivar potential rather than guaranteed laboratory values.
Growers looking for classic OG genetics with dependable potency, abundant resin production, and reliable overall performance often find Old School OG an excellent addition to their collection.
Flavor, Aroma, and Terpene Profile
Old School OG delivers a classic Kush terpene profile that blends sweet grape with fresh lemon and earthy undertones. As flowering progresses, the aroma becomes increasingly bold, while the finished flowers produce the rich, old-school character that many OG enthusiasts appreciate.
🍇 Grape — sweet fruit notes that add richness to the profile
🍋 Lemon — bright citrus aromas that provide freshness and balance
🌿 Earthy — classic Kush character with deep herbal undertones
Dominant terpenes commonly associated with Old School OG include Myrcene, Caryophyllene, and Limonene, although terpene expression naturally varies between individual plants.
Reported Effects and Overall Profile
Old School OG is commonly associated with deep physical relaxation, calming body comfort, uplifting euphoria, and a peaceful overall character. Its pure Indica genetics create a profile that many growers appreciate for evening enjoyment and quiet downtime after a long day.
Individual experiences naturally vary according to cannabinoid content, terpene profile, personal tolerance, and consumption amount.
⚡ COMMONLY REPORTED PROFILE
Relaxed • Calming • Happy • Euphoric • Sleepy • Sedative
Reported effects are subjective and may vary between individuals.
Who Should Choose Old School OG Seeds?
Old School OG Seeds are an excellent choice for growers looking for authentic Kush genetics, dependable resin production, and classic Indica flower quality.
This cultivar may be a good fit if your priorities include:
- 100% Indica genetics
- THC potential reaching up to 20%
- Feminized photoperiod seeds
- OG Kush × Unknown Indica lineage
- Grape, lemon, and earthy terpene profile
- Indoor or outdoor cultivation
- Approximately 7–9 weeks of flowering
- Dense, resin-rich flowers with classic Kush bag appeal
Old School OG is particularly well suited to growers who appreciate traditional OG cultivars, compact plants, and dependable harvest performance with rich old-school terpene expression.
FREQUENTLY ASKED QUESTIONS
Yes. Old School OG features 100% Indica genetics, making it an excellent option for growers looking for a true Indica cultivar with classic Kush characteristics.
Under suitable growing conditions, Old School OG generally completes indoor flowering in approximately 7–9 weeks.
Yes. One of the defining characteristics of Old School OG is its dense flower structure combined with abundant trichome production, particularly during the final weeks of flowering.
Yes. Its compact growth habit makes it well suited to most indoor grow tents, especially when paired with low-stress training or topping to improve canopy development.
Yes. As flowering progresses, plants typically produce increasingly noticeable grape, lemon, earthy, and classic Kush aromas. Good ventilation and odor control are recommended for indoor grows.
Yes. Old School OG performs well outdoors where warm temperatures, consistent sunlight, and balanced nutrition allow plants to fully express their genetic potential.
Growers who enjoy traditional Kush genetics, dense resin-coated flowers, classic grape and lemon terpene profiles, and dependable Indica performance will likely find Old School OG especially rewarding.



Owen M –
A friend heard me complain about how difficult it was to get a classic variety. They referred me to this strain from The Seed Fair and I decided to give it a try. I’m happy I did.