Troubleshooting
Flaky Juniper problems — and how to fix them
Flaky Juniper (Juniperus squamata) 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
Fungal infection causing die-back of shoot tips, typically after cool wet springs. Remove and dispose of infected material, avoid overhead watering, and ensure good air flow between plants. Copper-based fungicides can reduce spread.
Scale insects
Juniper scale (Carulaspis juniperi) causes yellowing and browning of foliage. Look for small white or grey encrustations on stems. Treat with horticultural oil in late winter before new growth emerges, targeting crawler stage.
Browning foliage from winter desiccation
Cold, drying winds in exposed sites can cause foliage bronzing or browning in winter. This is usually cosmetic — new growth emerges in spring. Mulching the root zone and providing wind shelter helps limit damage.
Prevent flaky juniper problems before they start
Most flaky juniper issues are care-mismatch, not bad luck. Dial in the basics:
Looking for flaky juniper in general rather than its problems? Read the full flaky juniper care guide — light, water, soil and feeding.
Flaky Juniper problems — FAQ
Why is my flaky juniper phomopsis tip blight?
Fungal infection causing die-back of shoot tips, typically after cool wet springs. Remove and dispose of infected material, avoid overhead watering, and ensure good air flow between plants. Copper-based fungicides can reduce spread.
Why is my flaky juniper scale insects?
Juniper scale (Carulaspis juniperi) causes yellowing and browning of foliage. Look for small white or grey encrustations on stems. Treat with horticultural oil in late winter before new growth emerges, targeting crawler stage.
Why is my flaky juniper browning foliage from winter desiccation?
Cold, drying winds in exposed sites can cause foliage bronzing or browning in winter. This is usually cosmetic — new growth emerges in spring. Mulching the root zone and providing wind shelter helps limit damage.