By Gillice
Kent,
United Kingdom 
I have a small acer - bright red at the moment - but its leaves have white patches on them which doesn't look healthy. Does anyone know what they are and what I can do about it?
22 Oct, 2016
Answers
To me it sounds like sun on rain spots on the leaves has caused the problem but, without a photo, can't give a definitive answer.
22 Oct, 2016
Might be powdery mildew - photo's worth posting for diagnostic purposes, but if its mildew, though it might indicate dryness at the root so if it needs watering, water, but otherwise, no point doing anything, its about to lose its leaves anyway as autumn progresses.
22 Oct, 2016
Need a photo. It could be sun scorch or a fungus.
22 Oct, 2016