Troubleshooting
Blue Pacific Shore Juniper problems — and how to fix them
Blue Pacific Shore Juniper (Juniperus conferta 'Blue Pacific') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Phomopsis tip blight
Brown, dying shoot tips from spring fungal infection; encouraged by wet weather and poor air circulation. Remove affected growth, avoid overhead watering, and apply preventive copper-based fungicide.
Root rot in poorly drained sites
Despite its coastal sand dune origins, Blue Pacific will decline rapidly in heavy clay or compacted soils that retain water; symptoms are yellowing foliage and patchy mat dieback. Ensure excellent drainage before planting; amend heavy soils with grit.
Juniper scale (Carulaspis juniperi)
White, waxy scale insects encrust stems and foliage, causing yellowing and dieback. Apply dormant horticultural oil in late winter to smother overwintering scales, or target the crawler stage with insecticidal soap in early summer.
Prevent blue pacific shore juniper problems before they start
Most blue pacific shore juniper issues are care-mismatch, not bad luck. Dial in the basics:
Blue Pacific Shore Juniper problems — FAQ
Why is my blue pacific shore juniper phomopsis tip blight?
Brown, dying shoot tips from spring fungal infection; encouraged by wet weather and poor air circulation. Remove affected growth, avoid overhead watering, and apply preventive copper-based fungicide.
Why is my blue pacific shore juniper root rot in poorly drained sites?
Despite its coastal sand dune origins, Blue Pacific will decline rapidly in heavy clay or compacted soils that retain water; symptoms are yellowing foliage and patchy mat dieback. Ensure excellent drainage before planting; amend heavy soils with grit.
Why is my blue pacific shore juniper juniper scale (carulaspis juniperi)?
White, waxy scale insects encrust stems and foliage, causing yellowing and dieback. Apply dormant horticultural oil in late winter to smother overwintering scales, or target the crawler stage with insecticidal soap in early summer.