Is Domicile Cup Fungus Harmful to Humans? A Comprehensive Guide

Have you ever come across those peculiar-looking mushrooms with upturned, cup-shaped fruit bodies in your home or garden? These mushrooms are known as domicile cup fungus, and while they may seem innocent, you may be wondering if they pose a threat to human health.

In this article, we will explore the effects of domicile cup fungus on human health, dispelling any concerns about its harmlessness, and discuss prevention and control measures.

Understanding domicile cup fungus is essential in determining if it is harmful to humans. These fungi are commonly found in damp and humid areas, such as bathrooms and kitchens, and can reach an upper diameter of 10 cm.

Despite their presence, it’s important to note that domicile cup fungus is not harmful to plant life, and the answer to whether it poses a threat to humans is a resounding ‘no.’

Is Domicile Cup Fungus Harmful to Humans?

Have you ever noticed those odd-looking, upturned, cup-shaped mushrooms that seem to pop up out of nowhere in your garden or home? These mushrooms are known as domicile cup fungus (Peziza domiciliana). While they may look harmless, you may be wondering if they pose any danger to humans.

The answer is no, domicile cup fungus is not harmful to humans. However, the potential danger lies in their accidental ingestion, especially by curious kiddos and pets. Although they won’t cause supernatural harm, ingesting cup fungi could lead to some unpleasant side effects. So, it’s best to think of them as inedible due to their rubbery texture and the potential risks involved.

According to a comprehensive guide on Gardening Flow, Peziza domiciliana is not harmful to plant life, but some gardeners find them unpleasant to look at, with their upturned, cup-shaped tops. The fungus is commonly found in water-damaged buildings and is usually associated with indoor environments.

If you have children or pets, it’s best to remove the domicile cup fungus from your garden or home as soon as possible. However, if you’re unsure about how to identify the fungus, check out My guide to identifying and enjoying this delicate fungi.

Understanding Domicile Cup Fungus

If you’ve noticed strange-looking, cup-shaped mushrooms growing in your home or garden, you might have encountered Peziza domiciliana, commonly known as the domicile cup fungus.

This fungus typically grows in damp environments such as kitchens and bathrooms. The fruit bodies of P. domiciliana are cup-shaped, initially concave, and later develop an undulating margin and a depressed center. The outer surface of the cup is whitish, and the margin of the cup can either remain intact or split. Fruit bodies can reach an upper diameter of 10 cm (3.9 in).

Although the domicile cup fungus is not harmful to humans, accidental ingestion could lead to some unpleasant side effects, especially for curious children and pets. If you find this fungus in your home, it is important to take steps to remove it and prevent its growth.

According to, the following steps can help to get rid of domicile cup fungus in your bathroom:

  • Remove any visible fungus growth with a damp cloth or sponge.
  • Use a mixture of bleach and water to disinfect the affected area.
  • Increase ventilation in the affected area by opening windows or using a fan.
  • Fix any leaks or moisture problems that may be contributing to the growth of the fungus.

By taking these steps, you can help to keep your home free of domicile cup fungus and protect yourself and your family from any potential health problems.

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Prevention and Control of Domicile Cup Fungus

Now that you know what domicile cup fungus is and how to identify it, it’s time to talk about prevention and control measures. Fortunately, there are several things you can do to prevent the growth of domicile cup fungus in your garden or home.


Prevention is always better than cure. Here are some preventive measures you can take to keep domicile cup fungus at bay.

  • Reduce soil moisture: Domicile cup fungus thrives in moist soil. Therefore, it’s important to keep the soil in your garden or potted plants as dry as possible. Avoid overwatering your plants, especially if they are shade-loving plants.
  • Prune shade plants: Shade plants are more susceptible to the growth of domicile cup fungus because they create a damp and humid environment. Therefore, it’s important to prune your shade plants regularly to allow for better air circulation and sunlight penetration.
  • Remove decaying plant matter: Domicile cup fungus feeds on decaying plant matter. Therefore, it’s important to remove any fallen leaves, twigs, or branches from your garden or potted plants regularly.


If you already have domicile cup fungus growing in your garden or home, don’t worry. There are several control measures you can take to get rid of it.

  • Handpicking: If you only have a few domicile cup fungus growing, you can simply handpick them and dispose of them in a sealed plastic bag. Make sure to wear gloves to avoid direct contact with the fungus.
  • Applying fungicides: Fungicides can help control and eliminate domicile cup fungus. However, make sure to follow the instructions carefully to avoid harming the environment or creating an even bigger problem.
  • Improving soil drainage: If your soil is too moist, you can improve soil drainage by adding organic matter such as compost, perlite, or vermiculite. This will help improve soil aeration and water drainage, making it less conducive for the growth of domicile cup fungus.

By following these preventive and control measures, you can keep your garden or home free from domicile cup fungus. Remember to always wear gloves when handling the fungus and dispose of it in a sealed plastic bag.

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Is Carpet Cup Fungus Dangerous?

Carpet cup fungus might sound like a fancy home decoration, but in reality, it’s a sneaky little fungus that can grow on a wide range of substrates, including sand, cement, plaster, coal dust, and walls.

It might not be classified as poisonous, but it’s best to avoid consuming it. Ingesting carpet cup fungus is not recommended, as it can cause respiratory problems and allergic reactions in some individuals.

Therefore, if you spot some carpet cup fungus lurking around your home, it’s best to remove it.

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How to Get Rid of Brown Cup Fungus

If you’re dealing with brown cup fungus in your home or garden, don’t worry, there are ways to get rid of them. Here are three effective methods for eliminating these pesky fungi:

Drying out the Area

Since cup fungi thrive on moisture, the first step to getting rid of them is to reduce the amount of moisture in the affected area.

Address any leaks or damp spots, and ensure that your space is well-ventilated. By keeping things dry, cup fungi will be less likely to stick around.

Applying Fungicides

If drying out the area doesn’t work, you can try using fungicides to control and eliminate the brown cup fungus. However, make sure to follow the instructions carefully to avoid harming the environment or creating a bigger problem.

Manual Removal

If you prefer a hands-on approach, you can manually remove the brown cup fungus.

Gently remove the mushrooms from your lawn or other surfaces, taking care not to damage the surrounding area. Be cautious, as some fungi can release spores when disturbed.


If you’re concerned about cup fungus growth in your home or lawn, you’re not alone. Here are some frequently asked questions to help you better understand these fungi and how to prevent and eliminate them.

How can you prevent cup fungus growth in your home or lawn?

To keep these fungi at bay, maintain a dry environment, clean regularly, and address any moisture problems. Prevention is the best form of defense, so stay vigilant and keep your space fungus-free.

Are other types of cup fungi dangerous?

Most cup fungi are relatively harmless, but it’s always best to exercise caution and avoid consumption. You never know when you might come across an unfriendly fungus, so better safe than sorry.

Can you use household remedies to eliminate cup fungus?

Some household remedies might help, but it’s best to consult a professional for guidance. While you might be tempted to wage an all-out war against these fungi using DIY methods, it’s crucial to know what you’re dealing with and how to address it safely and effectively.

How can you safely remove cup fungi from your lawn without harming the environment?

Manual removal or using eco-friendly fungicides are your best bets. Just be sure to choose products that won’t harm the environment or disrupt the delicate ecosystem in your garden. Remember, we’re trying to get rid of the fungi, not cause an environmental catastrophe!


Now that you know more about domicile cup fungus, you can take the necessary steps to keep your home and garden safe from potential harm. Remember, while these fungi are not harmful to humans or pets, accidental ingestion can lead to unpleasant side effects.

To prevent the growth of domicile cup fungus, address any moisture problems in your home or garden and use appropriate methods to control and remove the fungi. Don’t hesitate to seek professional help if you’re unsure about the best course of action.

By staying vigilant and knowledgeable about the potential dangers of domicile cup fungus, you can keep your home and garden fungus-free. Happy fungus fighting!

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