What Is White Fuzz?

White fuzz is a fungus that causes white spots on leaves of many houseplants. It usually appears in spring or summer when temperatures are high and humidity is low. The fungus spreads through air currents caused by wind blowing from one part of the room to another. When it starts appearing, it looks like tiny snowflakes falling on the leaves.

The fungus is not harmful to the plant. However, it does cause damage if left unchecked. If you see white fuzzy spots on your houseplants, then they have been affected by white fuzz. You may want to remove them immediately so that they do not spread the fungus further in your home.

How To Identify White Fuzz On House Plants?

White fuzz is very easy to identify. A few things will help you to determine whether or not your houseplant has been affected by white fuzz:

Look at the underside of the leaves. White fuzz on leaves means that the fungus has reached the roots of the plant. Look for small white specks on the undersides of leaves. These are called spores and they indicate that white fuzz fungus has already infected some parts of your plant.

Look for white specks on the leaves. These specks are the actual fungus. They grow and cover more of the leaf as time goes by. If you see a few of them here and there, then it either means that your plant is suffering from a minor infection or that the fungus is starting to appear. If you see many white specks, then it means that your plant is already severely infected by the fungus.

What You Should Do?

If you notice that your plant has white fuzz, then you should act immediately and remove the infected leaves. This is important to stop the fungus from spreading. You can also use a spray to kill the fungus and keep it from spreading further.

How To Prevent White Fuzz On Houseplants?

The best way to prevent white fuzz is to ensure that your houseplants have enough light and that their leaves dry out quickly after watering. White fuzz thrives in warm, damp conditions. That is why it usually appears when temperatures are high and humidity levels are high.

You should also avoid over-watering your houseplants. A good way to do this is to water them thoroughly then wait until the top inch or so of soil has dried out before watering again. It is better to give them too little water than too much.

You can remove any leaves that show signs of white fuzz once you have watered them. Don’t put them back in the soil or throw them in the trash, though. Instead, put them in a sealed bag and throw it out because they may still contain spores that can reinfect your houseplants.

How To Get Rid Of White Fuzz?

White fuzz is fairly easy to get rid of. As long as you remove any leaves that show signs of infection and make sure that your houseplants aren’t kept in overly damp conditions, then they should remain free of the fungus.

If you can’t tell whether or not your plant has white fuzz until the fungus is well established then you should probably throw it away and buy a new one. You don’t want to take any chances because the fungus can spread very quickly and affect all of your houseplants.

Keeping your houseplants away from potential sources of infection, such as cold rooms and humidifiers, is also a good idea. If you do everything you can to prevent the spread of the fungus, then your plants should remain free of white fuzz infection for quite some time.

Sources & references used in this article:

All about house plants. by M Free – All about house plants., 1950 – cabdirect.org

Pests and diseases of house plants by BC Wolverton – 2020 – Spring

House Plants: Common Insects and Diseases by A Vella – 1992 – um.edu.mt

Houseplants: Proper Care and Management of Pest Problems by FF Laemmlen, JK Liebherr – 1976 – archive.lib.msu.edu

Care of house plants. by JJ Knodel, K Kinzer, R Smith – 2009 – library.ndsu.edu

House plants for the purple thumb. by ZG Beloselskaya, AD Sylverstov – Moscow, Selhozgyz, 1953

G91-1022 Guide to Growing Houseplants by HM BlEKART – Extension Bulletin. Rutgers University Extension …, 1960 – cabdirect.org

Indoor Gardening the Organic Way: How to Create a Natural and Sustaining Environment for Your Houseplants by M Baylis – 1976 – cabdirect.org

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