# Cultural control

> Pest and disease prevention by changing how the crop is grown, such as humidity, airflow, spacing, watering and cultivar choice, so pests and pathogens struggle to establish.

- Canonical: https://genetixbay.com/knowledge/glossary/cultural-control.html
- Also written: cultural controls, cultural practices, prevention, preventive measures, environmental control of pests
- Glossary category: Pests and diseases · Evidence: Established
- Status: Draft: awaiting expert review · Updated: 2026-10-31
- Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay cannabis glossary"

Cultural control means using growing practices to make the crop a poor home for pests and disease. It covers the environment, [plant spacing](https://genetixbay.com/knowledge/glossary/plant-density.md), watering, media, crop timing and cultivar choice. It is the foundation layer of [IPM](https://genetixbay.com/knowledge/glossary/ipm.md) and usually the least expensive.

## In practice

Examples on cannabis: keeping humidity and [dew point](https://genetixbay.com/knowledge/glossary/dew-point.md) in check late in flower to deny *[Botrytis](https://genetixbay.com/knowledge/glossary/botrytis.md)*; moving air through and under the canopy against [powdery mildew](https://genetixbay.com/knowledge/glossary/powdery-mildew.md); letting the top of the medium dry between waterings to cut [fungus gnats](https://genetixbay.com/knowledge/glossary/fungus-gnat.md); cool, oxygenated nutrient solution against *[Pythium](https://genetixbay.com/knowledge/glossary/pythium.md)*; spacing plants and thinning crowded interior growth; avoiding overhead watering outdoors; and choosing cultivars with known tolerance, such as those carrying mapped mildew resistance. Removing weeds and host plants near outdoor grows reduces insects that carry viruses. None of these act fast, but together they lower pressure so other tools work.

## Don't confuse with

- **Biological control**: living [natural enemies](https://genetixbay.com/knowledge/glossary/biological-control.md), not growing practices.
- **Sanitation**: hygiene; overlaps, but focuses on cleaning rather than how plants are grown.
- **Chemical control**: pesticides and fungicides, the last layer.

## Related terms

[IPM](https://genetixbay.com/knowledge/glossary/ipm.md), [Sanitation](https://genetixbay.com/knowledge/glossary/sanitation.md), [Biological control](https://genetixbay.com/knowledge/glossary/biological-control.md), [Powdery mildew](https://genetixbay.com/knowledge/glossary/powdery-mildew.md), [Botrytis](https://genetixbay.com/knowledge/glossary/botrytis.md)

## Read more

- [Sanitation and disease prevention for cannabis grows](https://genetixbay.com/knowledge/diseases/sanitation-and-prevention.md)
- [Airflow: air exchange, canopy air speed and fan placement](https://genetixbay.com/knowledge/environment/airflow.md)

## Sources

1. PNW Plant Disease Management Handbook. Hemp (Cannabis sativa) - Powdery Mildew. https://pnwhandbooks.org/plantdisease/host-disease/hemp-cannabis-sativa-powdery-mildew
2. Punja ZK, 2021. Emerging diseases of Cannabis sativa and sustainable management. Pest Management Science 77:3857–3870. https://pmc.ncbi.nlm.nih.gov/articles/PMC8451794/