The club shares Ron Hill Oval with Toronto Cricket Club and has four croquet greens and a half-size practice green.

The near bowling-standard lawns are each worth $20,000 and $20,000 is spent each year on their maintenance.

However, over the past six months the lawns have taken a beating from vandalism.

Last Thursday, club committee member Glen Coulton discovered the most recent damage, after 40.8 millimetres of rainfall the week before.

Mr Coulton said the damage to the lawns appeared to be made by bikes and people playing football games, on the area where Lake Macquarie council had erected "closed" signs.

Built on clay rather than sand, the greens need several days of sun to dry and be playable.

Any repairs needed to the lawns can not happen until spring.