[CANUFNET] Oak tree top dieback

[Ethier Elaine]

Hello,
Was the tree rolled around ? planted in a heat wave, was there a desiccant applied? Was the tree staked at any time with coil attachments, (ligature) on the bark and cambium ? 
I agree with a possible mechanical problem and would investigate when, how it was planted and what kind of stress it had other than lots of water. Trimming will need regular management to recreate a stem leader but will most certainly have a structural weakness. 


Elaine Ethier


> Le 30 mai 2016 à 11:39, Michael Richardson <mrtree at kos.net> a écrit :
> 
> It is most certainly not oak wilt.  There is no (known) oak wilt in
> Ontario and it does  not look like your leaves.
> 
> I am tempeted to suspect root/root-collar damage but of course this is
> simply a guess without evidence.  I would be examining the root collar and
> the area between the live and dead portions of the tree.
> 
> 
>> Hi everyone
>> 
>> I'm visiting family in Windsor Ontario and my aunt has a  Quuercus robur
>> 'Fastigiata' The top is dead from the top to about one meter from the
>> ground.  The tree did non leaf out this spring except for the bottom meter
>> of the tree. I know the weather  has been wet in the summer in the Windsor
>> area the last few summers. I believe it is anthracnose or oak wilt. It
>> looks like anthracnose but not sure if the disease would cause 80% of the
>> tree to die. I suggested to prune the dead out and let the tree grow from
>> the base but if it is oak wilt I don't want it to spread to there other
>> oaks. Has anyone else had this problem in the area from the wet weather.
>> Or dose anyone know what we are dealing with. The picture is a few leaves
>> from the part of the tree That did leaf out this year and the disease is
>> only on about 10 % of what is left alive.
>> 
>> 
>> 
>> 
>> 
>> Thank you
>> 
>> Shawn Riberdy
> 
>