Troubleshooting
Wiltoni Juniper problems — and how to fix them
Wiltoni Juniper (Juniperus horizontalis 'Wiltonii') 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 and Kabatina tip blight
Shoot tips brown and die back in wet conditions; cut out diseased growth, improve airflow and avoid wetting foliage.
Root rot from poor drainage
Waterlogged or clay soil rots the roots. Plant on a slope or raised, grit-amended bed for sharp drainage.
Centre dieback
Dense mats can brown and thin in the middle from poor light and trapped moisture; thin lightly and keep debris off the foliage.
Spider mites
Hot, dusty conditions bring stippling and bronzing; rinse foliage regularly and apply horticultural oil if severe.
Prevent wiltoni juniper problems before they start
Most wiltoni juniper issues are care-mismatch, not bad luck. Dial in the basics:
Looking for wiltoni juniper in general rather than its problems? Read the full wiltoni juniper care guide — light, water, soil and feeding.
Wiltoni Juniper problems — FAQ
Why is my wiltoni juniper phomopsis and kabatina tip blight?
Shoot tips brown and die back in wet conditions; cut out diseased growth, improve airflow and avoid wetting foliage.
Why is my wiltoni juniper root rot from poor drainage?
Waterlogged or clay soil rots the roots. Plant on a slope or raised, grit-amended bed for sharp drainage.
Why is my wiltoni juniper centre dieback?
Dense mats can brown and thin in the middle from poor light and trapped moisture; thin lightly and keep debris off the foliage.
Why is my wiltoni juniper spider mites?
Hot, dusty conditions bring stippling and bronzing; rinse foliage regularly and apply horticultural oil if severe.