Cheshire,
United Kingdom 
acer leaves are dead on the end of leaf
26 Jul, 2010
Answers
High winds and hot sun, perhaps underwatering, cause this trouble - Acers are woodland plants, particularly the Japanese ones, and like dappled shade, shelter and cool conditions. They do, though, need some sunlight or bright light to keep their colour, if you have a coloured leaf form.
27 Jul, 2010
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possibly sun burn, they like dappled shade
26 Jul, 2010