fixed image links:

http://img44.imageshack.us/img44/6584/topiary001.jpg

I am in desperate need of the same assistance! My Spiral Junipers are turning brown also and I don't know why. Mine are about a year old though. My Mom said they like very acidic soil and to pour half a can of coffee grounds on each so that it would soak down when watered. Seems to be helping but I'm not sure if this is any kind of solution. Not sure if I should cut off brown parts or not because then it will be shaped really weird. I thought I may have had some spider mites so I sprayed them down. Could that be causing the brown?

Anyway i know this doesn't help you friend but I assumed the same person could help us both. Will be checking back!

Yes zone/time might be effecting it. Also, change out the soil, make it more neutral for acidity and make sure it has very good drainage. What is the temperature of the room and the humidity? and last but not least .....google ; )

Here is a link that might be useful: relax .....people helping people