Leaf miner problem

[Mark in Texas]

I am going to try the Imadiclorpid stuff on new my trees while the weather is still cool and I only have a few flushes going on.

 Is it better to do a root drench or foliar spray?

Soil drench will give you long term control but a week or so to be effective.  Foliar will give you immedate but short term control.  YMMV

[Mark in Texas]

How much can cold weather reduce CLM activity? last few years we had very mild winters without negative temperatures, which, i believe, caused stronger CLM activity. Now we have negative temp. along the adriatic coast. I wonder if they appear in less numbers next spring.

It's been my observation/experience that very cold weather does not decrease insect populations. They have an incredible ability to survive ultra cold winters with the over wintering of eggs in secure places.  I used to say it too, "hope we have a cold winter so we don't have these frickin' grasshoppers next year!" 

....as I watch them eat my veggies even tough burford leaves come summer.   

[Radoslav]

I just got a citrus tree from Italy, which has tunnels on the bottom side of new leaves identical to those on pictures of citrus leafminer at web. I have never had leafminer, so if I remove attacked leaves, does it help to get rid of it?