Archive Runtz

Maintain temperatures of 20–26°C in the day and slightly cooler at night, keep RH around 40–50% during flowering, and provide full-spectrum LEDs with 600–900 µmol/s/m² at canopy.

Expect 8–9 weeks of flowering after a robust vegetative phase; seed-to-harvest indoors is often 12–14 weeks depending on veg time.

Low-stress training and SCROG are effective to maximise light penetration and yield while keeping the canopy even.

Use a balanced N-P-K feed in veg then switch to lower nitrogen and higher phosphorus and potassium during flowering; watch for nutrient lockout in cool, wet conditions.

Spider mites, powdery mildew and bud rot can be issues, especially when humidity is high or airflow is poor; inspect regularly and act early.

Monitor trichome colour with a magnifier; aim for mostly milky with some amber for balanced effects and higher THC expression.

Dry slowly at 16–20°C and 45–55% RH for 7–10 days, then cure in jars for several weeks to deepen flavours and smooth the smoke.

It can do well in sheltered, sunny microclimates but requires good airflow and rain protection to avoid mould in cooler summers.

Yes, with proper training and a SCROG net you can manage height and achieve good yields in compact spaces.

Look for guides that cover ventilation, light positioning, CO₂ supplementation options, and environmental control; effective indoor cannabis grow room setups focus on stable temperature, humidity and air exchange.