I have a couple of plum (yellow, red) trees and Asian pear trees.

Since last year, the leaves on these trees have started
having little brown holes and the flowers bloom but just
brown out and wither.

This season I sprayed "spectracide fungicide" containing myclobutanil on them when the leaves/blooms set. While this
helped a bit, the flowers mostly withered away and the leaves died too.

Now, some pear leaves are starting to curl as well.

I just switched to "all purpose fruit tree spray" containing
neem oil and pyrethrin.

Here are some pics

http://i49.tinypic.com/2ljj7kh.jpg

http://i47.tinypic.com/zv3r4k.jpg

Is my diagnosis & remedies correct ?

This is in the wet pacific northwest. Thanks !

Your curling pear leaves I can't tell for sure what is happening. That is often caused by aphids so I would look for aphids in the curled-up bits. Your all-purpose spray may actually work on that, aphids is one of the few things such a spray will be good for. There are several other causes of pear leaf curling besides aphids.

Scott

I can give copper a shot at leaf fall since it is too late now.

I did not see any insects on the curled pear leaves. For now,
I have just removed & disposed the ones that looked real bad.