How to Get Rid of Mold on Clay and Terracotta Pots

Sheri Dorn is a versatile homesteader and culinary artist with a strong focus on organic and heirloom gardening. Holding a Master's degree in Culinary Arts, she combines her love for cooking and gardening in a unique way. Sheri is an active contributor to online gardening communities and enjoys quality outdoor time with her family and pets.
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Want to know How to Get Rid of Mold on Clay and Terracotta Pots? Keep on reading to know about the best methods.

How to Get Rid of Mold on Clay and Terracotta Pots 1

Clay and terracotta pots are a great way to add a touch of charm and natural beauty to your garden or indoor plants. However, one pesky problem that can arise with these types of pots is the growth of mold. But don’t worry, here’s How to Get Rid of Mold on Clay and Terracotta Pots.

What Are the Main Causes Behind Mold on Clay and Terracotta Pots


Mold growth on clay and terracotta pots is typically caused by a combination of moisture and organic material, which mold uses as a food source. Here are the main factors that contribute to mold growth on these types of pots:

  • Overwatering: Clay and terracotta pots are porous, which means they absorb some of the water given to plants. If a plant is overwatered, the pot can remain damp for extended periods, which encourages mold growth.
  • Poor Ventilation: Mold spores thrive in stagnant, humid conditions. If your pots are in an area with little airflow, this can contribute to mold growth.
  • Lack of Sunlight: Mold prefers to grow in damp, dark conditions. If your pots are in a shady spot, this can encourage mold.
  • Organic Matter: Mold uses organic material as a food source. This could be anything from potting soil, dead plant material, or even residues of organic fertilizers.
  • High Humidity: Areas with high humidity can create ideal conditions for mold growth on pots, as the moisture in the air is enough for the mold spores to thrive.
  • Lack of Cleaning: If pots are not regularly cleaned, it can lead to a build-up of organic material and mold spores, which over time can grow into visible mold.

Remember that seeing mold on your pots is usually an indication that the conditions are also ripe for other fungi or diseases that could potentially harm your plants. Adjusting your watering schedule, improving ventilation and light, and regular cleaning of your pots can all help to prevent mold growth.

Check out the Best Ways on How to Recharge Your Old Potting Soil

How to Get Rid of Mold on Clay and Terracotta Pots

How to Get Rid of Mold on Clay and Terracotta Pots 2

Here are some affordable and homemade remedies to get rid of mold on clay and terracotta pots:

1. Vinegar Solution

Vinegar is a natural fungicide that can kill mold spores. Mix one part vinegar with nine parts water. Soak the pot in this solution for at least an hour. Scrub the pot thoroughly using a brush and then rinse it off with water.

2. Baking Soda

Create a paste using baking soda and a little water. Apply this to the moldy areas and scrub with a brush. Baking soda is a natural cleaning agent and will help to kill the mold.

3. Hydrogen Peroxide

Use a 3% hydrogen peroxide solution, applying it to the moldy areas. Let it sit for a few minutes, then scrub with a brush and rinse thoroughly. Hydrogen peroxide is an effective mold-killer and is safe for plants.

4. Bleach Solution

Mix one part bleach with nine parts water. Soak the pot in this solution for at least an hour, then scrub and rinse it off. Note that bleach can be harmful to plants and beneficial soil microorganisms, so make sure to rinse thoroughly and consider re-sterilizing with boiling water if you’re using this method.

5. Dish Soap

Scrubbing the pots with warm water and dish soap can remove mold. Make sure to rinse thoroughly to remove any soap residue.

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6. Sunlight

Sunlight can help to kill mold spores. After cleaning your pot, place it in a sunny location to dry out thoroughly.

Remember, after removing the mold, it’s important to prevent it from returning. Allow pots to dry out fully between waterings and ensure they are in well-ventilated areas with good airflow. If mold is a consistent problem, consider changing your potting medium to a type that drains more effectively or adjust your watering habits to avoid over-saturation.

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