How quickly does mold grow on wet clothes?

Author: Prof. Ralph Osinski  |  Last update: Sunday, January 18, 2026

If your clothes are damp or in a humid environment with little ventilation, this often leads to mold growth. Mold can start growing on wet clothing as soon as 24 to 48 hours. You should be able to discover mold on your clothing from the musty smell.

How long does it take wet clothes to mold?

While placing garments in the dryer or on the clothesline right after the cycle finishes is best practice, wet laundry should generally not stay in the washer for more than 8-12 hours. Mildew and mold thrive in warm, damp environments, and the washer provides an ideal setting if laundry is left too long.

Will wet clothes get moldy overnight?

Any damp clothing items that are organic in nature (like cotton) will begin to grow mold on them after 24 hours. Other items may have mold spores on them, but may or may not grow mold. It depends if there is any residual organic materials on them too.

Can mold come from wet clothes?

Any damp clothing items that are organic in nature (like cotton) will begin to grow mold on them after 24 hours. Other items may have mold spores on them, but may or may not grow mold. It depends if there is any residual organic materials on them too.

How long does it take for mold to grow when something gets wet?

Mold growths, or colonies, can start to grow on a damp surface within 24 to 48 hours. They reproduce by spores - tiny, lightweight “seeds”- that travel through the air. Molds digest organic material, eventually destroying the material they grow on, and then spread to destroy adjacent organic material.

How long does it take for wet clothes to mold?

What are the 10 warning signs of mold toxicity?

Although symptoms can vary, the most common symptoms seen in people exposed to mold indoors include:
  • Nasal and sinus congestion.
  • Eye irritation, such as itchy, red, watery eyes.
  • Wheezing and difficulty breathing.
  • Cough.
  • Throat irritation.
  • Skin irritation, such as a rash.
  • Headache.

Can mold grow in 2 hours?

Given the proper conditions, mold will start to germinate and grow as early as 24 hours after encountering the moisture source. In 3 to 12 days, the mold spores will colonize. In 18-21 days, the mold can become visible.

Can wet moldy clothes be saved?

It may not be feasible to save the garment if the mold was allowed to grow for a long time. With the right approach, mold can be removed from clothing. The moldy clothing should be taken outside, cleaned of any visible mold, soaked in vinegar, washed in hot water with a high-efficiency detergent, and dried in the sun.

Does hanging wet clothes cause mold?

When clothes come out of the washing machine, they are very damp and must be placed in a tumble dryer or outside on a clothesline. By hanging clothes on a clothes horse indoors, you create excess moisture in the home, which can lead to mould.

How long do mold spores live on clothes?

Mold spores on clothes usually live for a day or two. But, they'll keep multiplying and form a colony that keeps growing if the conditions are right in your home.

How long can wet clothes sit in a bag?

After a day or two in warm conditions the clothes will start to mildew and smell funky, but you can still salvage them at that point if you rewash them with fresh detergent and an oxygen bleach. Left for a week in the bag they will reek and be permanently stained.

Can you wash mold out of clothes?

Choose the hottest setting on your washing machine. Most mold spores will die at temperatures above 140 degrees Fahrenheit (60 degrees Celsius), so cold and warm water cycles won't work. Add laundry detergent (regular detergent is fine). Add any other disinfectants, like vinegar, bleach or baking soda.

What to do if you forgot your wet laundry?

If you left clothes in the washer overnight, you may need to freshen them up before drying. A quick rewash may be all you need. Or, for a more thorough refresh of your laundry, run the same load on another full cycle and try adding a presoak option to help combat stubborn odors.

How fast can mold grow on fabric?

If your clothes are damp or in a humid environment with little ventilation, this often leads to mold growth. Mold can start growing on wet clothing as soon as 24 to 48 hours. You should be able to discover mold on your clothing from the musty smell. It can appear black, green, or white.

Will wet clothes mold overnight?

You won't usually need to rewash laundry left in the washer overnight. However, under the right circumstances, mildew can begin forming on clothes quickly. If you detect an odor, simply rewashing clothes that were left overnight should be your first step.

Does rewashing clothes remove mildew?

Wash Them Again

In this case, the mildew hasn't had much chance to grow and, assuming your washing machine is clean, you should be able to get the smell out by running another load in precisely the same way you usually do.

How long before wet clothes get moldy?

Leaving Wet Clothes in the Washer Can Cause Bacteria and Mildew to Grow. The biggest downside of leaving your clothes in the washing machine for more than eight to twelve hours is that, after this period, there's a greater chance that bacteria, mold, and mildew will grow.

Can slightly damp clothes grow mold?

Yes, clothes can definitely get moldy. This usually happens when they are left damp for too long, or when they are stored in a humid and poorly ventilated area. It's important to dry clothes thoroughly before storing them, and to keep your storage areas dry and well-ventilated to prevent mold growth.

What does mold on wet clothes look like?

Step 1: Look for visible mold growth on the clothes

Mold growth is easily visible as spots or stains of various colors and shades. The spots may appear almost “fuzzy” or “powdery”. Even if you can't see any spots or growth, if an odour is present there is microbial growth and treatment is needed.

Does mold go away after drying?

As you can see, mold does not die when it dries out. Instead, it enters a dormant state and can reactivate once moisture is reintroduced. Therefore, simply drying out mold-infested areas is not enough to eliminate the problem. Mold spores can still pose risks even when they appear inactive.

How to tell if mold is on your clothes?

How do you know if your clothes are moldy? They will be discolored, black or green, and will have a distinct musty smell. If you are unsure, you can always have your clothes professionally dry cleaned to be safe.

Do you have to throw everything away with mold in the house?

Scrub mold off hard surfaces with detergent and water, and dry completely. Absorbent or porous materials, such as ceiling tiles and carpet, may have to be thrown away if they become moldy.

Can mold appear overnight?

Mold can easily grow within 24 to 48 hours and will begin to colonize in 1 to 12 days.

Should you throw out moldy clothes?

After washing and drying, inspect the clothes for any signs of mold. If stains or smells persist, repeat the washing process. This may be necessary for severe cases where mold spores are deeply embedded in the fabric. Sometimes, stubborn mold cannot be completely removed, and it might be safer to discard the item.

What temperature kills mold?

Most yeasts and molds are heat-sensitive and destroyed by heat treatments at temperatures of 140-160°F (60-71°C).

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