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mold in new root cellar

 
Kaarina Kreus
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My root cellar was finished a couple of months ago and I have been canning and preserving loads.
Now I am seeing mold. Where sauerkraut overflowed from its jars, mold has appeared.
Humidity is 91%. Temperature a bit higher as ideal 20°F because it's early autumn.
What on earth am I doing wrong?
IMG_20240919_133314.jpg
where sauerkraut has bubbled over, mold!
where sauerkraut has bubbled over, mold!
IMG_20240919_133327.jpg
kale bubbled over and the shelves molded immediately
kale bubbled over and the shelves molded immediately

Whathever you are, be a good one.
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Kaarina Kreus
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I have glass jars with silicone seals so the mold hopefully will not seep in.
I have heard vinegar kills mold, they use it on wood in construction. Should I spray the place with 12% vinegar?
IMG_20240919_134207.jpg
[Thumbnail for IMG_20240919_134207.jpg]

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Benjamin Dinkel
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Hey. I don’t think you’re doing anything wrong. You might need to leave some more air for the kraut to bubble next time.
With 90% humidity and oxygen it’s no surprise the kraut juice molded.
Vinegar is a good idea as far as I’m concerned

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Anne Miller
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Humidity is what the problem is most likely.

Vinegar is good as well as baking soda, hydrogen peroxide, and citric acid.

Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner

 
Mike Haasl
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I'm assuming you meant 20C for your temp?  I had a funky root cellar in my basement so I boraxed and limewashed it and that really helped.  I also got rid of most of the old/porous wood at the same time.  Here's a few pics: Submission for PEP Oddball Points

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craig howard
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Spread a light layer of baking soda on the moldy areas and leave it there.
 
Kaarina Kreus
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Thank you everybody ❤️
Gosh I love this forum!

Whathever you are, be a good one.
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Alder Burns
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Mold on wood or other porous materials can be killed and prevented by a strong solution of borax and/or boric acid painted or sprayed on the surface.  Simply dissolve as much of either or both as can dissolve in boiling water and apply it hot.  This will kill and prevent any kind of mold, wood rot, and insects; is bitter for animals so they won't lick it, and non-toxic to touch.  It even makes the wood more fire-resistant!  In areas where people and animals don't usually go (such as crawl spaces) the efficacy is improved by dissolving in ethylene glycol antifreeze, and then diluting half and half with water....this enables the solution to penetrate deeper into larger pieces of wood.  
 
Kaarina Kreus
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Alder, thanks you so much! This was new to me. Will try it immediately!

Whathever you are, be a good one.
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Kaarina Kreus
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I thought I'd do an update. During winter, the temps dipped to ideal just a bit above freezing, with humidity pretty stable at 95%. But the mold just got worse, whatever I did.

So I installed a rotating wind-driven ventilator on the roof. It solved everything. Strangely, the temperature did not change and neither did the humidity. Just the air started flowing much better.
1744643966571.jpg
[Thumbnail for 1744643966571.jpg]

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John C Daley
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I was going to suggest improving the air flow, its good to see it was effective.
Many people forget that.

John Daley Bendigo, Australia The Enemy of progress is the hope of a perfect plan
Benefits of rainfall collection https://permies.com/t/88043/benefits-rainfall-collection
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Kate Downham
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Thank you for sharing that the wind ventilator worked. Do you have any vents also in the door or walls?

I am designing a root cellar and thought of having one vent low in the door and one high in the door, and not sure if this is enough, that wind vent might be a good idea here as well.

Natural Small Batch Cheesemaking A Year in an Off-Grid Kitchen Backyard Dairy Goats My website @NourishingPermaculture

 
Kaarina Kreus
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There are four air inlets two on each side, close to the floor,  with a fist-sized pipe. They connect behind the root cellar into a looooong pipe. The idea is that the inflowing air travels 30 feet deep underground before entering the root cellar. We need to stabilise temperature. We have hot summers and deadly winters.
Seems that the vent on the roof did not suck air forcefully enough. The 30 feet long underground pipe being the problem, probably. But problem solved now.
IMG_20240813_141328.jpg
[Thumbnail for IMG_20240813_141328.jpg]
The temp stabilising pipe
IMG_20240813_091418.jpg
Air inlets
Air inlets

Whathever you are, be a good one.
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And then the flying monkeys attacked. My only defense was this tiny ad:
Free Seed Starting ebook!
https://permies.com/t/274152/Orta-Guide-Seed-Starting-Free
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