A tree planted in a Los Angeles park in memory of the late George Harrison of the Beatles has been killed by beetles, a city councillor has said.

Tom LaBonge, whose district includes Griffith Park, told The Los Angeles Times that the pine tree, planted in 2004, would be replaced shortly.

It had grown more than three metres in the space of a decade, only to succumb to beetles known to attack trees in the vast and popular inner-city park, the Times reported.

Harrison, the Beatles' lead guitarist as well as a chart-topping solo artist and avid gardener, lived in Los Angeles prior to his death in 2001.

A plaque at the base of the tree read: "In memory of a great humanitarian who touched the world as an artist, a musician and a gardener."

This year marks the 50th anniversary of the Beatles' very first concert appearances in the United States.