O.G. Kush Seeds

Feminized Seeds

Various Quantities

Price range: $27.50 through $41.50

Pack Size (Royal Queen Seeds)

Clear

Chemdawg x Lemon Thai x Pakistani Kush. Indica Dominant. Feminized seeds by Royal Queen Seeds.

O.G. Kush feminized cannabis seeds by Royal Queen Seeds. One of the most recognized names in cannabis, this indica-dominant feminized version pairs high THC with a fruity flavor and a 7 to 9 week bloom. Sold in 3 and 5-seed packs.

Grow specs

Genotype	Indica Dominant
Genetics	Chemdawg x Lemon Thai x Pakistani Kush
Seed type	Feminized, photoperiod
Flowering time (indoor)	7 to 9 weeks
Outdoor yield	High (450 to 750 g per plant)
THC	High (16 to 24%)
CBD	Medium (1 to 5%)
Plant height	Tall
Flavor	Fruity

About O.G. Kush

The exact origins of OG Kush have always been debated. The most widely accepted account puts it as a cross of Chemdawg with Lemon Thai and Pakistani Kush, which is the lineage Royal Queen Seeds lists for this version.

The strain built its reputation partly through high-profile fans in film and music, and its name is now familiar to growers almost everywhere.

How it grows

Indoor flowering runs about 7 to 9 weeks. Plants are rated tall, so topping and training help keep the canopy level in a tent, and outdoor growers should leave room for a large plant.

Outdoors, the breeder rates yields as high, at 450 to 750 grams per plant in favorable conditions.

Flavor, aroma and effect

Royal Queen Seeds lists the taste as fruity. THC is high at 16 to 24%, with medium CBD of 1 to 5%. As an indica-dominant hybrid, it leans toward a relaxed body feel.

Who it is for

O.G. Kush is a natural choice for growers who want a legendary name in their collection, and for those with enough space to manage a taller plant. Its moderate flowering time keeps it practical for indoor growers, while outdoor gardeners can take advantage of its strong per-plant yield.

Pack options

O.G. Kush Seeds from Royal Queen Seeds come in 2 pack sizes: 3 seeds ($27.50) and 5 seeds ($41.50). Every seed is feminized, so each one grows into a flowering female plant.

Seed Germination Instructions

for cannabis seeds

Step 1: Soak the seeds

Fill a glass with clean, room-temperature water (68-77°F / 20-25°C).
Use filtered, dechlorinated, or pH-balanced water to prevent contaminants.
Drop the seeds into the water and gently swirl to ensure full submersion.
If seeds float, tap them down lightly or leave them to absorb water.
Optional: Add 3% hydrogen peroxide (H₂O₂) at a ratio of 1 ml per 100 ml of water to prevent mold and bacteria.
Place the glass in a dark, warm location for 2-6 hours (do not exceed 12 hours to prevent drowning).

Step 2: Prepare the Germination Plate

Dampen two layers of paper towel, cotton, or thick toilet paper with clean, dechlorinated water.
If using toilet paper, fold multiple plies to ensure adequate thickness.
Place seeds evenly between the layers, ensuring they do not touch each other.
Towels should be moist but not soaking wet.
Set the damp towel on a plate and cover with another plate or place it inside a resealable plastic bag to retain moisture.
Store in a dark, warm location (70-78°F / 21-26°C) such as a drawer or cabinet.
Check the moisture level every 6-12 hours and add water as needed to prevent drying.
Expected Germination Time:
- Most seeds crack open within 48-72 hours.
- Some may take 5-6 days to show taproots.
- Older seeds or seeds with a tougher shell may take up to 10-15 days to sprout.
- If a seed has not sprouted within 10 days, gently check it for signs of swelling or softening.

Step 3: Monitor Germination

Seeds typically crack open and develop a taproot within 48-72 hours, but some may take up to 5-6 days.
Older or dormant seeds may take 10-15 days to sprout, especially if they have a thicker shell.
Check regularly for signs of mold or fungal growth.
If mold appears, replace the paper towel and rinse seeds in a diluted hydrogen peroxide solution (1 ml of 3% H₂O₂ per 100 ml water).
The seed is ready for planting when the white taproot emerges and reaches ¼-½ inch (0.6-1.3 cm).

Step 4: Planting the Seeds

Prepare a pH-balanced growing medium (pH 5.5-6.0) such as:
- Quality soil-perlite mix
- Coco coir with perlite
- Rockwool cubes (must be pre-soaked in pH 5.5 water)
Plant the seed 2-5 mm deep, with the root tip facing downward.
Use containers that are at least 10 cm (4 inches) deep with drainage holes for healthy root development.
Lightly cover the seed with soil—do not press down too hard.
Spray the top layer with water instead of drenching it.

Step 5: Initial Care for Seedlings

Keep the growing medium moist but not waterlogged—spray with a spray bottle instead of overwatering.
Maintain high humidity by:
- Covering containers with clear plastic wrap or a humidity dome.
- Ensuring there is some airflow to prevent mold buildup.
Place seedlings under cold white LED or fluorescent lights or in indirect sunlight at 68-77°F (20-25°C).

Step 6: Gradual Exposure to Light

Once seedlings emerge and develop their first set of leaves (cotyledons):
- Slowly introduce them to stronger light sources.
- Start with low-intensity LED, CFL, or indirect sunlight, then gradually increase exposure.
Keep grow lights at a safe distance:
- LEDs: 12-24 inches (30-60 cm) above seedlings.
- HPS/MH: 24-36 inches (60-90 cm) above seedlings.
If transitioning to outdoor sunlight:
- Harden seedlings off gradually by placing them outside for short periods each day.

Additional Tips

Use filtered rainwater, bottled water, or dechlorinated tap water.
Maintain humidity levels between 70-80% for optimal germination.
Avoid handling the taproot directly, as it is delicate and can be easily damaged.
If using rockwool cubes, pre-soak them in pH 5.5 water before planting.
Germination rates depend on strain genetics, seed age, and storage conditions.
Seeds may take longer to sprout if conditions are too dry, cold, or hot.
Failure to follow these steps may reduce germination success and replacements are unlikely.
By following these steps, you’ll achieve healthy, vigorous cannabis seedlings ready for strong growth. 🌱