US supermarket group Kroger has launched a plastic bag recycling programme in an attempt to boost its green credentials.

Plastic bags, dry-cleaning bags and other plastic shrink wrap can now be recycled at Kroger outlets, the company said.

Bags will be collected and recycled into other plastic goods - including landscape bricks, plastic lumber and more plastic bags.

The company also announced the launch of an online contest for consumers to design a reusable bag.

"Kroger's approach to sustainability is to partner with our customers and our associates to provide choices so that they can impact their local and global environment in a meaningful way," said Lynn Marmer, group vice president of corporate affairs for Kroger.