I’m really confused about this one. Let’s say I kind of understand the way fungi develop eg. on food – it rots over time and the fungus has like the ‘basis’ to grow on. But on walls? I know they need high humidity and temperature to develop but in the end humidity is just water vapour in the air, so all that’s left is a piece of wall and water, I don’t get where the fungus comes from.
In: Biology
Fungi doesn’t start growing from the wall directly. It usually comes from behind the wall where there are nutrients like wood, dirt, etc, etc. the hyphae will then make its way across the wall. You can see this by googling “Mould growing on wall” virtually all the pictures show mould coming out from somewhere like a corner.
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