Troubleshooting
Rocky Mountain Juniper problems — and how to fix them
Rocky Mountain Juniper (Juniperus scopulorum) 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.
Overwatering and root rot
Constantly wet soil rots the roots and yellows the foliage. Use a sharply draining mix and let it dry between waterings.
Decline indoors
This is a cold-climate outdoor conifer that needs winter chill; kept inside it slowly weakens. Grow it outside year-round.
Juniper tip blight (Phomopsis/Kabatina)
Browning, dying shoot tips in damp conditions. Improve airflow, remove affected growth, and avoid wetting foliage when watering.
Spider mites
Dry, stagnant air can trigger mites that bronze the foliage. Hose down the canopy and apply horticultural oil if they persist.
Prevent rocky mountain juniper problems before they start
Most rocky mountain juniper issues are care-mismatch, not bad luck. Dial in the basics:
Looking for rocky mountain juniper in general rather than its problems? Read the full rocky mountain juniper care guide — light, water, soil and feeding.
Rocky Mountain Juniper problems — FAQ
Why is my rocky mountain juniper overwatering and root rot?
Constantly wet soil rots the roots and yellows the foliage. Use a sharply draining mix and let it dry between waterings.
Why is my rocky mountain juniper decline indoors?
This is a cold-climate outdoor conifer that needs winter chill; kept inside it slowly weakens. Grow it outside year-round.
Why is my rocky mountain juniper juniper tip blight (phomopsis/kabatina)?
Browning, dying shoot tips in damp conditions. Improve airflow, remove affected growth, and avoid wetting foliage when watering.
Why is my rocky mountain juniper spider mites?
Dry, stagnant air can trigger mites that bronze the foliage. Hose down the canopy and apply horticultural oil if they persist.