I have a Betula nigra which was planted 20yrs ago. A fortnight ago the leaves turned brown and looked dead within a week. There were some dead tree trunks 10 ft away with some fungi growing around them. I have treated the birch with Armodillox and removed the tree stumps.There is no sign of "bootlaces" but I don't know exactly what I'm looking for. Any suggestions. Jeanette.
- 8 Aug, 2011