Chicago Runtz

Start seeds indoors in late March to early April and harden off seedlings before transplanting after the last frost.

Increase potassium and phosphorus in mid to late flowering while keeping nitrogen moderate to support bud density without excess leaf growth.

Keep an eye out for aphids, spider mites and caterpillars and inspect buds regularly, especially during warm spells.

Dry slowly at 18-21°C with 50-60% RH for 7-12 days then cure in glass jars, burping daily for two weeks and less frequently thereafter.

Low-stress training and topping early produce an even canopy, while SCROG helps maximise indoor yields without big height increases.

For high humidity cannabis cultivation use dehumidifiers indoors, increase airflow, keep node spacing open and remove lower foliage to improve circulation.

Many growers perform a light flush one to two weeks before harvest to improve smoke quality, but adjust based on plant condition rather than strict timing alone.

It tolerates moderate temperature swings but prolonged cold below 10°C will stress plants and can slow trichome development.

Supplemental lighting can extend usable daylight and support late-season bud ripening when the natural light begins to fade.

Aim to harvest just as trichomes turn cloudy with some amber, typically eight to nine weeks for most phenotypes, and plan to finish before persistent autumn rains.