CULTIVATION GUIDE

How to Grow OG Kush

Complete OG Kush cultivation guide — from seeds and germination to harvest, drying and curing.

Difficulty: Moderate Flowering: 8–9 weeks Indoor Yield: 450–500g/m²

Difficulty

Moderate

Flowering Time

8–9 weeks

Indoor Yield

450–500g/m²

Outdoor Yield

400–600g/plant

Plant Height

90–160cm

Grow Type

Indoor/Outdoor

OG Kush Grow Timeline

Stage	Duration	Notes
Seeds / Germination	3–7 days	Paper towel or direct soil method
Vegetative Stage	4–6 weeks	18/6 light cycle, nitrogen-heavy feeding
Flowering Stage	56–63 days	12/12 light cycle, bloom nutrients
Harvest & Dry	7–14 days	18–21°C, 50–60% RH, dark room
Cure	2–4 weeks	Glass jars, burp daily (first 2 weeks)
Total Grow Time	4–5 months

OG Kush growing under optimised conditions

OG Kush Seeds & Genetics

Genetics: Chemdawg × Hindu Kush | Breeder: Unknown (California origin) | Type: Hybrid (Indica-dominant)

OG Kush traces its roots to a cross between Chemdawg and Hindu Kush landrace genetics, believed to have originated in Northern California in the early 1990s. Its compact, resinous buds and distinct earthy-pine terpene profile made it a cornerstone of West Coast cannabis culture. When sourcing OG Kush seeds, look for reputable breeders offering feminised or autoflowering variants. Feminised seeds remove the guesswork of sexing plants and are ideal for most home growers. If you want a full breakdown of growing techniques, our beginner cannabis growing guide covers seed selection in depth. OG Kush seeds typically germinate in 3–7 days using the paper towel method or direct soil sowing. Once sprouted, seedlings should be transferred under an 18/6 light cycle to begin the vegetative phase.

Indoor vs Outdoor Growing OG Kush

Indoor cultivation of OG Kush allows full environmental control — a significant advantage given this strain's sensitivity to humidity. Target relative humidity below 50% during flowering to prevent powdery mildew. HPS or full-spectrum LED lights both work well; LEDs reduce heat stress and electricity costs. For outdoor growing, OG Kush excels in warm, dry climates similar to Southern California or the Mediterranean. Plant in large containers or directly in the ground after the last frost. Read our complete cannabis outdoor growing guide for site selection tips. Training techniques such as SCROG (Screen of Green) can dramatically increase indoor yields. Learn how to implement it in our SCROG guide. OG Kush responds well to low-stress training (LST) and topping during the vegetative stage.

Nutrients & Feeding Schedule for OG Kush

OG Kush has a moderate-to-high nutrient demand throughout its life cycle. During vegetative growth, feed with nitrogen-dominant nutrients at EC 1.2–1.8. As flowering begins, transition to a bloom formula higher in phosphorus and potassium. Our detailed cannabis nutrients guide covers EC levels, feeding schedules and organic vs synthetic options. Flush your plants with plain pH-balanced water (6.0–7.0 for soil, 5.5–6.5 for hydro) for the final 1–2 weeks before harvest to improve flavour. OG Kush benefits from CalMag supplementation, especially in soft water regions or when grown in coco coir.

Common Problems & Solutions When Growing OG Kush

The most common issue with OG Kush is powdery mildew triggered by high humidity. Keep flowering humidity below 45–50% and ensure good airflow. Spider mites can also be problematic in hot, dry grow rooms — inspect leaf undersides weekly. OG Kush is sensitive to overwatering; allow the top inch of soil to dry before watering again. pH imbalances frequently cause nutrient lockout — maintain 6.0–7.0 in soil and 5.5–6.5 in hydroponic setups. Check our cannabis pH guide for troubleshooting tips.

Harvest, Drying & Curing OG Kush

OG Kush is ready to harvest when 70–80% of trichomes have turned milky white with some amber. Check with a jeweller's loupe or digital microscope. Harvest by cutting branches and hanging them upside down in a dark, ventilated room at 18–21°C with 50–60% humidity for 7–14 days. After drying, trim and place buds in glass mason jars. Open jars (burp) daily for the first two weeks during the cure. Proper curing enhances OG Kush's signature earthy-pine flavour. See our full cannabis harvest guide for step-by-step instructions.

Also See Our OG Kush Strain Review

Discover the full terpene profile, effects, and medical uses of OG Kush.

OG Kush Strain Guide →

OG Kush Terpenes & Effects

Myrcene Limonene Relaxation Effect

Frequently Asked Questions — Growing OG Kush

Is OG Kush easy to grow?

OG Kush is moderate in difficulty — it thrives in warm, dry climates and is sensitive to humidity. Beginners can succeed with proper environmental controls.

How long does OG Kush take to flower?

OG Kush flowers in 8–9 weeks indoors. Outdoor harvests typically occur in mid-October in the Northern Hemisphere.

What yield can I expect from OG Kush?

Indoor yields average 450–500g/m² under optimal LED or HPS lighting. Outdoor plants can produce 400–600g per plant in full sun.

Does OG Kush grow well outdoors?

Yes, OG Kush performs well outdoors in warm Mediterranean-style climates. It prefers low humidity during flowering to prevent mould.

What nutrients does OG Kush need?

OG Kush is a heavy feeder during vegetative growth. Use nitrogen-rich nutrients in veg, then transition to phosphorus and potassium during flowering.

Is OG Kush resistant to pests?

OG Kush has moderate pest resistance. Watch for spider mites and powdery mildew, especially in humid conditions.