As with all scale insect pests, the overall health of host plants plays a significant role in the impact of a juniper scale infestation. Healthy plants will be less affected compared to unhealthy plants. My usually out-of-control junipers are pretty healthy; I only detected the infestation through pruning. Of course, a heavy infestation will eventually affect the health of host plants possibly leading to a self-feeding spiral producing increasing populations and greater damage. Still, scale insects are seldom responsible for directly killing their hosts, but their damage makes their hosts more susceptible to other fatal factors.
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