I awoke this morning to open my curtains and see this strange thing in the corner. I have only just come to see it and I was wondering what it is and how best to get rid of it? I think it's a mold/fungi of some sort.
Okay, so a quick update. I sprayed some mold and mildew killer on the growth near the window. I left it 5 minutes as required, then when I came to remove the growth from the wood a brown powdery liquid came flooding out the growth.