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WilliAm444

Conifers dying

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Wider picture on the issue needed - is there a chance of water-logging the roots ( leaky pond ? ) Neighbour complaint ( copper nailing )  an how long they been in ? Looks like a landscaped job to my eye ? K

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Lesions on the stems?

 

I think it's unlikely to be ground moisture - more likely to be evident to all of the trees.

Copper nails - Urban myth IME

 

Were they large transplants?

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Fairly new owners, when they moved in they were already dead.
I didn’t notice any lesions, they are surrounded by shingle but I would have thought they’d all be dead if that was the issue.

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Ah Gary ! Tiznt, copper nail plus acidic ( sulphur dioxide air pollutant + water = sulphuric acid + copper = copper sulphate , very toxic to plants )  rainfall = nasty blue crystals seen on copper parts in some acidic water areas. k

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