We bought a Pyrus Calleryana "Chanticleer" in November 2003 because of its
glorious colours - reds, oranges, etc.

Last summer, the leaves were unhealthy, with brown patches, and they dropped
off without turning colour. I took a sample back to the garden centre and
was advised to give the tree a tar wash next year. In fact, this year we
have been dosing it regularly with organic pest spray and the leaves stayed
very healthy. But when autumn came, the leaves changed to a dull greeny
brown and have just dropped off. No colours. I'm so disappointed.

I should be very grateful for advice.

TIA

Daphne