When should I treat for Dutch elm disease?
Preventive injection every two to three years, before symptoms.
Why timing decides it
A rapid one-season decline usually means removal. Fungicide injection can protect a high-value elm that isn't yet infected, but it does not rescue one that is well along.
Indiana specifics
Still active. It's why mature American elms are rare here now, and why the ones that survive are worth protecting.
Related
- How do I know if my tree has Dutch elm disease?→
- Can a tree with Dutch elm disease be saved?→
- Is Dutch elm disease a problem in Indiana?→
- What does treatment for Dutch elm disease cost?→
- Does Dutch elm disease spread to other trees?→
- How do I know if my tree has emerald ash borer?→
- Can a tree with emerald ash borer be saved?→
- Is emerald ash borer a problem in Indiana?→