My platycladus conifer is turning brown. What can I do?

Steve Barker, by email

AMATTHEW SAYS I think you might lose this plant; it looks like it is suffering from a fungal attack of the root system and is in decline. If honey fungus is in the area, this could be at play, or a Phytophthora root rot. Another cause could be severe or sudden waterlogging.

Remove and dispose of a dying plant to avoid spreading disease