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Crataegus monogyna "Paul's Scarlet" = very sick


 
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avs0020
Rank attained: Hawthorn Tree
Rank attained: Hawthorn Tree


Joined: 24 Sep 2008
Posts: 84
Location: Kerry

PostPosted: Tue Jul 24, 2012 8:38 pm    Post subject: Crataegus monogyna "Paul's Scarlet" = very sick Reply with quote

Hi everyone.

I've been away for about 4 weeks and came back to both my Hawthornes having lost the bottom 2 thirds of their leaves. Suspect we'll lose the top ones soon. Because of the winds I cant find any dropped leaves so I cant see evidence of disease but there was a fuchsia plants below which looks like it has a sort of brown rust. I'm down in Kerry and the weather has been unrelenting in its misery (except for last Saturday). the fuchsia is showing signs of recovery with new leaves. Does anyone have any idea what is ailing my trees? I should also add that they didnt flower this year?? What can I do to help them recover?

Thanks
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michael brenock
Rank attained: Chlorophyll for blood


Joined: 12 Aug 2008
Posts: 1275
Location: cork

PostPosted: Wed Jul 25, 2012 8:29 am    Post subject: Reply with quote

the tree is probably affected by either Fireblight or small leafspot. Fireblight is more serious as it also affects apples and Pyracanthas. The leafspot is more than likely accentuated by the bad wet weather and humid conditions. The description that you give where the older and lower leaves are most affected tallies with the normal progress of the disease. It will not kill the tree but will reduce the vigour. There has probably been small outbreaks of it other years but the weather in a "normal" was sufficient to prevent its advance. I presume that no insects or caterpillars were present, too wet for them.
michael brenock horticultural advisor (retired)

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avs0020
Rank attained: Hawthorn Tree
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Joined: 24 Sep 2008
Posts: 84
Location: Kerry

PostPosted: Thu Jul 26, 2012 9:45 pm    Post subject: Reply with quote

Thanks Michael. Anything I can do about this?
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michael brenock
Rank attained: Chlorophyll for blood


Joined: 12 Aug 2008
Posts: 1275
Location: cork

PostPosted: Fri Jul 27, 2012 10:35 pm    Post subject: Reply with quote

sorry for delay in reply. There is nothing you can do now, wait for improvement in weather. In Winter cut off the top 6 inches of each shoot.
michael brenock horticultural advisor (retired0

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michael brenock
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avs0020
Rank attained: Hawthorn Tree
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Joined: 24 Sep 2008
Posts: 84
Location: Kerry

PostPosted: Tue Aug 21, 2012 6:09 pm    Post subject: Reply with quote

Thanks Michael
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