cherry trees

Were they recent plantings? Or were they old trees?

3 years old

Two things - they need masses of water for the first 2 years in dry spells, at least a gallon every week, possibly twice a week if very dry. This is true of all new trees, but cherries in particular because they are shallow rooting. Second, they hate root disturbance, so once it's in, any other planting in the area should be done at the same time, not later on once its started spreading its roots out. Don't know if that helps.

thanks for your time ..the trees were on a watering system ..i think that some kind of insect got under the bark ..but thats just my theory have planted a pear tree in its place and amm keeping an eye on it ..regards M

I'm curious as to how you've set your watering system - how often, and how long for each time? Because you could be causing yourself a problem with that if its set to water little (less than ten minutes) and often (more than once a week)

from april to october 15mins every day ...the other 30 trees on line are all ok

Oh my goodness;-) I think you need to read my blog on watering - click on my icon and give it a look - it's not very long. Biggest impact your kind of watering makes is to encourage plants to keep their roots on the surface of the soil, just waiting for you to pop the water on. And then when you don't - they're in trouble, haven't put down deep and wide roots to seek out water.

the solution is water!!!!!! Mother natures solution!!! :D