White Mold on Dirt Around Plant

Written by elton dunn
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White Mold on Dirt Around Plant
White mould is a common houseplant issue. (flora - botanics image by Doug Stacey from Fotolia.com)

That white mould on your plant's soil is not harmful, but it does indicate that something is out of balance. This is a common issue with house plants, especially for beginning gardeners.

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Appearance

If you're not sure whether that's white mould on your soil, it probably isn't. White mould on the soil looks like white freckles or drips of paint on otherwise dark soil.

Cause

The most common cause of white mould on soil is excess moisture in the soil. This is usually caused by overwatering; cut back on your watering habits and ensure the underlying layers of soil are dry, not wet, before you water.

Prevention/Solution

Plants with adequate drainage are less likely to develop white mould. Always plant house plants in containers with drainage holes; if using nonporous containers, fill the bottom three to four inches of the planter with crushed rock.

Tip

Plants benefit from light and air circulation. Increase air circulation to your houseplants with a fan or move them outside for fresh air if temperatures are above 4.44 degrees Celsius.

Solution

Scrape the mould off the dirt with a spoon and add fresh soil. If you suspect your houseplant may be too small for its container, transplant it into a larger container and use new potting soil.

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