Monkey Puzzle Tree looking sickly
I’ve had a large Monkey Puzzle in a huge pot for a long time and it’s always thrived. It’s now over two metres tall and bonny. In the last week or two the new growth has been pale, but not quite yellow. The leaves also seem to be covered in a dust, possibly mould? It’s regularly fed and watered but what could I do to boost its health? I hate to see it not looking at its best. Any advice gratefully received!