Author Topic: Sick oak tree  (Read 4358 times)

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Sick oak tree
« on: August 24, 2008, 06:45:38 pm »
We have a small oak tree in our garden which is not looking well.

It's got small dots under the leaves and mildew on others.

Does anyone know what to treat it with?







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Offline Susan

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Re: Sick oak tree
« Reply #1 on: August 24, 2008, 08:42:02 pm »
The top photo is the common spangle gall caused by a wasp - see www.aie.org.uk/trunkline/pests/aie_pd_spangle.html
It doesn’t cause serious damage, even when present in large numbers.

The weather’s been good for mildew this year – not sure there’s much you can do, though. You could spray with a fungicide (not sure if one’s even officially registered for the control of mildew on oak trees), but if I were you, I’d just hope for better weather :)

 

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Re: Sick oak tree
« Reply #2 on: August 24, 2008, 09:10:26 pm »
The top photo is the common spangle gall caused by a wasp - see www.aie.org.uk/trunkline/pests/aie_pd_spangle.html
It doesn’t cause serious damage, even when present in large numbers.

The weather’s been good for mildew this year – not sure there’s much you can do, though. You could spray with a fungicide (not sure if one’s even officially registered for the control of mildew on oak trees), but if I were you, I’d just hope for better weather :)



Thanks Susan, what a great link. I searched Wikipedia to find out more about the gall wasp. Very interesting.

David
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