Pink Floyd star Roger Waters performed at a star-studded charity gala over the weekend (30-31Aug14) to promote chemical-free landscape gardening.

The rocker topped the line-up at the family picnic and concert in East Hampton, New York on Saturday (30Aug14) to raise funds and awareness for the Perfect Earth Project, which campaigns for toxin-free garden maintenance.

According to New York Post gossip column Page Six, Rufus Wainwright, singer/songwriter Suzanne Vega, British folk star Teddy Thompson and experimental artist Laurie Anderson also provided entertainment as guests dined on picnic food and petted animals from a nearby wildlife reserve.

Guests at the event included Sex and the City star Kim Cattrall, lifestyle guru Martha Stewart and B-52s singer Fred Schneider.