Juniper Tip Blight
Phomopsis juniperovora (warm-season tip blight) and Kabatina juniperi (early-...
0 host plants · Fungal
Last updated
Quick Reference
Agent Type
fungal
Causal Agent
Phomopsis juniperovora (warm-season tip blight) and Kabatina juniperi (early-...
Host Plants
0
Spread
Rain splash and overhead irrigation; movement of infected nursery stock.
Favorable Conditions
Phomopsis: warm wet weather (50-75°F) and continuous leaf wetness of several ...
Management
Vulnerability Window
Phomopsis: active growth period (April through August in PNW). Kabatina: shoots infected the prior fall show symptoms January through April.
What Triggers Infection
Phomopsis: warm wet weather (50-75°F) and continuous leaf wetness of several hours during active growth. Kabatina: wound-mediated infection in fall through early winter; symptoms appear during cool wet late-winter weather.
Cultural Controls
- Plant resistant cultivars where possible; selection lists vary by source.
- Avoid overhead irrigation; use drip or soaker hoses to keep foliage dry.
- Space plants for good air circulation; prune to open the canopy.
- Prune out and destroy infected tips during dry weather; sterilize tools between cuts.
- Avoid wounding plants in late summer through fall; wounds are entry points for Kabatina.
Sources & References
Data Maturity Structured Multiple sources. Expert review underway.