My lemon scented conifer is browning off

Question

I have 6 lemon scented conifers and while they continue to grow they have all at some time browned off as if dying but tend to partially recover. Can you tell me what the problem is

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Answer 1

I suspect "cypress canker", a fungal disease.

There is no direct cure, but suppression of the advance of the disease may be achieved by good soil fertility and water management.

A local consulting arborist or public agency may help you with definitive diagnosis and treatment recommendations.

http://www.treetec.net.au/cypress-canker-removal.php