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LiberalLoner

(9,761 posts)
Mon Mar 22, 2021, 07:29 PM Mar 2021

Our mulch keeps trying to kill us.

We learned something new today. Mulch can self combust. Last year we blamed it on a probable cigarette thrown by a passerby. This year, clearly self combustion.

We had no idea mulch did that.

We now have very wet mulch. We have decided we don’t like black mulch very much anymore even though it looks nice and keeps the weeds down.

Just thought I would post this in case some of you have mulch that is plotting to kill you.

19 replies = new reply since forum marked as read
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Our mulch keeps trying to kill us. (Original Post) LiberalLoner Mar 2021 OP
I remember my family talking about barns going up if they cut and stored the hay too green. AleksS Mar 2021 #1
tobacco barns will self implode. yellowdogintexas Mar 2021 #14
Thank you, I didn't think the mulch was deep enough to be a problem, but I was wrong... LiberalLoner Mar 2021 #2
That reminds me of when part of a tree split off nitpicker Mar 2021 #3
I just had no idea. Feeling very stupid. LiberalLoner Mar 2021 #4
Decomposing organic matter generates heat Phoenix61 Mar 2021 #5
Wow I had no idea! LiberalLoner Mar 2021 #6
Thanks for the reminder. When I worked on a dairy many years ago I learned just why no abqtommy Mar 2021 #7
👍😬 LiberalLoner Mar 2021 #8
Update...found out what the problem was...our bay windows... LiberalLoner Mar 2021 #9
Did you know that mulch spits black spots on your house? Wicked Blue Mar 2021 #10
Oh no!!!! LiberalLoner Mar 2021 #15
Clearly you didn't see the thread on the origin of the word malaise Mar 2021 #11
How big is your mulch pile? Sanity Claws Mar 2021 #12
It was only a couple inches deep but our bay windows were acting as a magnifying glass LiberalLoner Mar 2021 #16
turning the pile every so often helps keep it cooled down. yellowdogintexas Mar 2021 #13
We had a good soaking rain today, should be okay until Saturday when the crew comes to LiberalLoner Mar 2021 #17
That made me laugh. Sanity Claws Mar 2021 #18
LOL at this point I don't trust any dang thing! LiberalLoner Mar 2021 #19

AleksS

(1,665 posts)
1. I remember my family talking about barns going up if they cut and stored the hay too green.
Mon Mar 22, 2021, 07:46 PM
Mar 2021

Apparently as it dries or decomposes or something it can build up enough heat if it's stacked or piled enough.

Everything's always trying to find a way to kill you.

More info:

https://nasdonline.org/915/d000758/hay-fires-prevention-and-control.html

nitpicker

(7,153 posts)
3. That reminds me of when part of a tree split off
Mon Mar 22, 2021, 07:56 PM
Mar 2021

And the tree company chopped it all up into little bits and piled it up.

Someone told me it could catch on fire and helped me pull it apart, then dispose of it.

Phoenix61

(17,003 posts)
5. Decomposing organic matter generates heat
Mon Mar 22, 2021, 08:10 PM
Mar 2021

which is good because it kills stuff in the mulch. Not so good if it gets too hot and bursts into flames. Towels washed in bleach and dried till they are very hot and left in a pile can do the same thing. Several restaurants have gone up in flames because of that.

abqtommy

(14,118 posts)
7. Thanks for the reminder. When I worked on a dairy many years ago I learned just why no
Mon Mar 22, 2021, 08:13 PM
Mar 2021

sane farmer ever puts wet hay up in the barn!

LiberalLoner

(9,761 posts)
9. Update...found out what the problem was...our bay windows...
Wed Mar 24, 2021, 10:54 AM
Mar 2021

For some reason our bay windows that stick out from the side of the house are acting as a magnifying glass when the sun is at a certain angle. So we are digging up the mulch and placing rocks instead. That should solve the problem.

Wicked Blue

(5,832 posts)
10. Did you know that mulch spits black spots on your house?
Wed Mar 24, 2021, 11:03 AM
Mar 2021
It's not merely out to commit arson, it can shoot goop at your home. It's called artillery or cannonball fungus (Sphaerobolus).

Better Homes and Gardens:

Shotgun Fungus Can Shoot Black Spots on Your House—Here's How to Avoid the Mess

If you're seeing dark specks on your siding, the culprit could be hiding in your mulch. Use these simple landscaping tips to prevent this from happening.

Updated May 01, 2020

https://www.bhg.com/gardening/yard/mulch/how-can-i-get-rid-of-the-black-spots-on-my-siding-near-mulch/

Sanity Claws

(21,847 posts)
12. How big is your mulch pile?
Wed Mar 24, 2021, 11:47 AM
Mar 2021

I know that compost gets hot and you should never have compost piles higher than 6 feet.
I can't imagine your mulch pile being more than a couple of inches.

LiberalLoner

(9,761 posts)
16. It was only a couple inches deep but our bay windows were acting as a magnifying glass
Wed Mar 24, 2021, 03:35 PM
Mar 2021

A nearby bush was sunburned too. So the real culprit was the window acting as a magnifying glass.

yellowdogintexas

(22,252 posts)
13. turning the pile every so often helps keep it cooled down.
Wed Mar 24, 2021, 01:49 PM
Mar 2021

Turn it and water it a bit as you put the layers back.

LiberalLoner

(9,761 posts)
17. We had a good soaking rain today, should be okay until Saturday when the crew comes to
Wed Mar 24, 2021, 03:36 PM
Mar 2021

Remove the mulch and replace with rocks which are hopefully less combustible.

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