Do wool blankets get moldy?


Wool blankets are a luxurious addition to any home, providing comfort, warmth, and softness like no other material can. However, there are questions that surround the maintenance of wool blankets, including whether they can get moldy or not. Mold can be a health hazard and can harm your beloved wool blanket, but is it possible for it to grow on wool?

In this article, we'll explore the relationship between wool blankets and mold, identify the signs of a mold-infested wool blanket, offer tips on how to prevent and remove mold from wool blankets, and answer some frequently asked questions.

What Causes Mold on Wool Blankets?

Mold grows in warm, moist, and humid conditions, making wool blankets a perfect breeding ground. Humidity can come from many sources, such as a damp environment, spills, pet urine, or even human sweat. You may not be able to notice the mold growth on your wool blanket right away, but it can eventually cause distinct musty odors, discoloration, and harm to your health.

Can Wool Get Moldy?

Wool is a natural fiber that is resistant to moisture due to its waxy coating, called lanolin. This unique feature makes wool a challenging material for mold to thrive on. However, wool is not entirely mold-resistant. After prolonged exposure to moisture, wool can absorb water, lose its lanolin waxiness, and create a humid environment that can encourage mold growth.

Signs of Mold on Wool Blankets

It's essential to regularly inspect your wool blankets for signs of mold to prevent it from spreading and harming your health. Here are some signs that will help you identify mold on your wool blanket:

-Visible black, green, or white spots or patches on the surface of the wool blanket.

-A distinct musty odor that smells like dampness or decay.

-Discoloration and yellowing of the wool fibers.

-Itchiness or skin irritation after contact with the wool blanket.

If you notice any of these signs, it's crucial to remove the mold as soon as possible to avoid further damage.

Preventing Mold on Wool Blankets

Prevention is the best cure when it comes to wool blankets and mold. Here are some tips on how to prevent mold growth on your wool blankets:

-Store your wool blankets in a dry, well-ventilated area to reduce humidity levels.

-Avoid placing wool blankets in direct sunlight, as prolonged exposure can dry out the wool fibers, making them more prone to damage and mold growth.

-Avoid spilling any liquids or food on your wool blanket. Clean up any spills quickly to avoid water penetration.

-Opt for wool blankets treated with anti-microbial or anti-fungal agents or wash the blanket with vinegar to kill bacteria.

-Don't overcrowd wool blankets in storage spaces so that air can circulate easily.

Removing Mold from Wool Blankets

If your wool blanket has been contaminated with mold, it's essential to remove the mold as soon as possible. Here's how:

-First, put on a mask and gloves to protect yourself from the spores.

-Bring the wool blanket outside or into a well-ventilated area and shake off any loose mold spores.

-Use a soft-bristled brush to remove any visible mold.

-Next, mix a solution of equal parts vinegar and water, and then add a tablespoon of borax per cup of warm water.

-Dampen a cloth in the solution and gently blot the affected area. Do not soak the wool blanket with the solution as it can damage the fibers further.

-Repeat the process until the mold is entirely gone.

-Once the mold has been removed, hang the wool blanket outside to dry in the sun to help kill any remaining bacteria.

Frequently Asked Questions

Q: Can mold on wool blankets cause health problems?

A: Yes! Prolonged exposure to mold can cause allergies, respiratory problems, and even neurological issues.

Q: Can you wash wool blankets to prevent mold?

A: Yes, washing your wool blankets in vinegar can help kill bacteria and prevent mold.

Q: Can wool blankets get too dry to provide warmth?

A: Yes, prolonged exposure to sunlight and heat can dry out wool fibers, making your wool blanket thin and less warm.

Q: How often should I wash my wool blanket?

A: It's recommended to wash your wool blanket once or twice a year to keep it clean and free of bacteria.


Wool blankets are an excellent investment that needs proper care to maintain their longevity, softness, and beauty. Although wool fibers are resistant to mold, they can still grow mold if left in damp environments for prolonged periods. Therefore, it's crucial to check your wool blankets regularly for signs of mold and take preventative measures to avoid mold growth, such as regular washing, proper storage, and quick clean-up of spills. If your wool blanket gets moldy, follow the steps above to remove the mold and restore your blanket to its former glory.


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