Lawson cypress die back

[dicky]

Hi, a customer has two lawsons that are dying back as per the pictures. It's happened very suddenly. Any ideas anyone? Thanks

[AA Teccie (Paul)]

Whilst, on summary observation, I don't think this is the cause it's certainly one to keep an eye out for https://www.forestry.gov.uk/forestry/infd-8bplhd

[dicky]

I've looked at both of these. The forestry site has a diagram. There are no large dead sections. Is this how it starts?

There is no sign of aphids.

It started about a month after that really got spell in June, I e mulched the roof plate and put down slow release fertiliser but it's still declining.

There

[htb]

Be interested in outcome as looked at about 12 in aboyne aberdeenshire in 3 different gardens, put it down to severe flooding in Jan 2016 followed by a months drought this spring. To PO whereabouts are your trees

[dicky]

Corfe castle dorset