Mold on potting soil is a common problem that occurs especially with houseplants. Although the mold is not harmful to the plant itself in most cases, it often indicates unfavorable care conditions.
Causes of mold
- Waterlogging: Too frequent watering or poor drainage promotes mold growth.
- Poor ventilation: A location with little air circulation promotes the development of mold spores.
- Nutrient-rich soil: Organic material in the soil can encourage mold, especially if it remains moist.
Detecting mold
Typical signs are:
- Whitish or grayish coating on the earth's surface.
- Sometimes a musty smell.
- In severe cases, visible fungal growth.
removing mold
- Remove the top layer of soil and discard it.
- Loosen the remaining soil to improve air circulation.
- Treat the soil with home remedies such as cinnamon (antifungal effect) or a biological fungicide.
Preventive measures
- Make sure the pot has good drainage.
- Only water when the top layer of soil is dry.
- Place the plant in a bright, well-ventilated location.