Tilia help needed

[Dean Lofthouse]

Looked at this one today.

 

Large leaf Lime with partial crown browning. Not all of the same stem has browned one or two secondaries on a single primary have browned.

 

Looking at the leaves it looks like small hairy galls at the junction of of each vein, hairy underneath and ontop.

 

Any idea chaps.

[Marc]

I've notcied a few Limes in my area are showing signs of die back very similar usually just a few stems or half the tree, haven't had a chance to look closely though.

[David Humphries]

From the leaf close ups, I would hazard a guess at leaf scale; possibly Eupulvinaria hydrangeae.

 

Then again, looking at the whole tree picture, the leaf damage could be caused by insect or fungal damage of the twigs.

Possibly - Xyleborus dispar ( pinhole borer )

or maybe - Nectria cinnabarina ( Coral spot )

 

Can you get any close ups of the dying/dead leaves?

 

 

 

 

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[Tommy_B]

Monkeyd, Can that occur on Sweet Chestnut? I had someone show me a leaf that looked very similar not too long ago and I didn't have a clue what it was...

[David Humphries]

Monkeyd, Can that occur on Sweet Chestnut? I had someone show me a leaf that looked very similar not too long ago and I didn't have a clue what it was...

 

Have not come across similar on Castanea.

 

Was it exactly the same as Deans picture or more of an overall mildew type covering?

 

 

 

 

 

 

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[Tommy_B]

The 'shot marking' effect was very similar. The only difference was there was a slight yellowing around the marks that isn't present on Dean's photo. The mildew was there as well.

[David Humphries]

The 'shot marking' effect was very similar. The only difference was there was a slight yellowing around the marks that isn't present on Dean's photo. The mildew was there as well.

 

 

 

Stumped me, I'm afraid

 

 

 

 

 

 

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[Tommy_B]

Ha ha!! Me too!!!

 

Cheers for having a go!!

[Dean Lofthouse]

The leaf was low down and was the only indicator of anything causing the dieback.

 

I'm actually lifting the row of trees to clear the building behind, but whilst pricing noticed this lime.

 

What I'll do is book in the job which is going to be about ten days or so and whilst climbing, take some high up samples or inspect the crown.

 

What I did notice is something has been chewing on the leaves also but nothing major. Whatever it is has eaten the leaf tissue leaving the veins

[Dean Lofthouse]

Looking at the leaf I have again the lumps are quite hard and structured into the leaf