Getting Rid of Mold on Mulch?

Gold Post Medal for All Time! 858 Posts

August 25, 2000
Picture of garden mulch.


Does anyone have any suggestions on getting rid of mold/fungus on mulch in the flower beds?




One simple way to get rid of mold is to turn it over into the topsoil and wet it down with water. A second way is to loosen it up with a rake to allow air to circulate around it and help to dry it out. A third way is to remove the mulch and place it in a pile and soak the pile with water. When left to sit, the pile should generate enough heat to kill off the mold and fungus.


The most effective way to control the growth of mold is to change the environment in which it grows. Mold tends to grow best in warm, humid environments. And while you may not be able to control the weather, there are a few things you can do to minimize its ability to grow.

Mulch made from coarse wood products are less likely to have mold and fungus problems than fresh, finely ground woody products. Make sure to apply mulch no more than 2 inches deep (in warm weather) and follow every application by soaking it with water.


December 1, 20000 found this helpful

Judy, If you've used anything natural like bark or straw as the mulch, it's going to eventually break down. Mold (fungus) is usually what appears first. There's no way to get rid of it naturally without harsh chemicals (fungicides). If you don't like the idea of stuff breaking down, you might want to switch to pebbles or something inorganic to use as a mulch.


Arzeena -

Reply Was this helpful? Yes
December 1, 20000 found this helpful

Just scrape off the top layer of mulch and replace it with fresh mulch. Or, turn the mulch over. When the air is humid, the molds grow, when it is dry they go into dormancy.

Here's a great site about the advantages and disadvantages of different mulches.

Susan - Thrifty Fun! Editor

Reply Was this helpful? Yes
By jovy (Guest Post)
April 17, 20050 found this helpful

I have a vegatable garden and there is mold in the soil. What can I do to get rid of it.

Reply Was this helpful? Yes
By MW (Guest Post)
May 29, 20061 found this helpful

We have recently moved into a new home which has central air conditioning ~ The outside unit sits on the north side of the house and has recently been surrounded with mulch which is almost constanly in shade.


When I turned on the air conditioner for the first time yesterday, there was immediately a nasty odor being brought into the house and I began experiencing feelings of dizzyness and nausea last night ~ I'm quite suspicious that the mulch might be moldy ~ Is there some way I can determine if this is the case ?

Thank you so much ~

Reply Was this helpful? 1
May 29, 20060 found this helpful


Maybe it's not the mulch with the mold problem -- maybe it's the air conditioner itself. It probably wouldn't hurt to clean out your air conditioner. A heating and cooling company could help you with this.
I found this website that may be helpful:

Reply Was this helpful? Yes
By Kristy (Guest Post)
June 8, 20060 found this helpful

I have a flower bed outside that keeps growing some kind of weird mold in the mulch. When it first appears, usually in the evening, it is bright yellow. By the next morning it is all puffed up and brown and white.


I haven't been able to find anything out about it. We do have a few cats. Could it be harmful to them, me or my children?

Reply Was this helpful? Yes
August 28, 20160 found this helpful

The air conditioning will not bring in outside air

Reply Was this helpful? Yes
July 17, 20170 found this helpful

Yes. There is a mold that can cause respiratory harm to people and pets. My parents dog passed away last year from sniffing it. We live in IL and it wasn't prevalent here for a long time. Recently though, i found out from our vet that it's becoming more prevalent. You should try not to disturb it too much, get under it and try not to break it. Spores will be spread of its disturbed too much. Good luck.

Reply Was this helpful? Yes
Answer this Question
Home and Garden Gardening MulchJune 29, 2011
Halloween Ideas!
Thanksgiving Ideas!
Ask a Question
Share a Post
Better LivingBudget & FinanceBusiness and LegalComputersConsumer AdviceCoronavirusCraftsEducationEntertainmentFood and RecipesHealth & BeautyHolidays and PartiesHome and GardenMake Your OwnOrganizingParentingPetsPhotosTravel and RecreationWeddings
Published by ThriftyFun.
Desktop Page | View Mobile
Disclaimer | Privacy Policy | Contact Us
Generated 2022-10-18 20:58:23 in 2 secs. ⛅️️
© 1997-2022 by Cumuli, Inc. All Rights Reserved.