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ABC News
ABC News
National

Some trees in Kings Park have been in decline for years. Now scientists know why and how to fix it

Left: Chlorotic decline syndrome nearly killed this old marri tree in Kings Park. Right: The same tree is thriving six months after treatment.  (Supplied: Kings Park)

Around 2003, the trees in Perth's Kings Park started to decline — their leaves yellowed and began to drop.

Some of the trees, which are hundreds of years old, were left bare and had been slated to be cut down.

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