By Liv123447
Australia 
why is my box hedge turning all orange
22 Jul, 2011
Answers
If it is a Buxus microphylla, and the weather is pretty chilly there, Liz, it may just be trying to protect itself from (possibly imaginary) frost. They turn a peculiar orange-brown every winter here in Arizona.
22 Jul, 2011
It might be box blight - not good.
23 Jul, 2011
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Firstly did it/does it suffer from drought?
22 Jul, 2011