
Treatment typically runs $300 to $900 per application around Indianapolis, and it is rarely one application. Preventive injection every two to three years, before symptoms.
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.
Still active. It's why mature American elms are rare here now, and why the ones that survive are worth protecting.