Almost every home in our development has similar landscaping. They all have small juniper shrub that is shaped like a cone. late in the winter I noticed that most, if not all, have large patches of "dead" areas. It looks like the needles are very red. They dont pull off any easier that the living ones. Could it be dryness, or spider mites? All the plants have been in at least 6-7 years. We are in SE michigan. I dident think spider mits would be on them in the winter. Its now almost april, and they all still have the same look. any help?