I have a patch of Blue Star Juniper whose color is beginning to fade, which leads me to believe it may be dying.  This patch is approximately 3 feet wide and 7 feet from top to bottom (see attached pictures). Two years ago I had the same thing happen to another patch of my Blue Star Juniper (see attached pictures) with all the Juniper dying.  I replaced the plants with new plants, but they have also died or are dying.  However, approximately 75 to 80 percent of my remaining Juniper still appears to be in good shape.  The dying patches of Juniper are all in the same 1/3'rd of the entire slope.  The plants will be four years old this Fall. All the plants have been taken care of equally.  The slope receives sun throughout most of the day during the late Spring to early Fall.  I have fertilized with Holly Tone every other year. Unless we have an extended dry spell, I let Mother Nature do my watering.   What are the possible circumstances that would cause my plants on one section of the slope to die and not on the other sections?  Is the fading color the symptom of some type of specific problem or deficiency?  Is there a remedy or solution to correcting this problem to keep the plants from dying?   When I try to replant my slope with Blue Star Juniper, what recommendations are there to give the plants their best chance of surviving?   Do I need to re-till the soil and add some type of additive or new soil mixture?  When I dig the hole, should I put some type of soil additive or mixture or fertilizer in the hole or on top of the ground once the Juniper has been planted?  In other words, what do I need to try to keep my current plants from dying and what procedures in planting do I need to follow to give my plants the best chance to survive once I replant?