If they are, you likely have juniper tip blight, or phomopsis.
This is a fungus that attacks the growing tip of the juniper, usually in spring when the temps are mild, around 60 F / 15 C or so, and during humid or wet weather. It attacks many species of juniper. Native North American junipers like Rocky Mountain Juniper are from arid areas and are particularly susceptible, but it is also found on shimpaku junipers. Needle junipers seem least susceptible but they also can be attacked.
Juniper Tip Blight, or phomopsis
This is a serious disease that can kill the branch and ultimately the tree. Do not ignore it if you have it. Again, this is a disease most active in the spring although you might see the fungal damage any time of year. Cutting away affected areas helps track its progress.
If you’ve ever seen ground cover junipers…
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