Delhi Chief Minister Arvind Kejriwal on Saturday said the city's green cover has to be increased from the existing 23 per cent to 25 per cent in the coming years to make the national capital world's greenest and cleanest city.

Kejriwal attended a Van Mahotsav where Lieutenant Governor V K Saxena was the chief guest. He said this year, more than 1 crore saplings will be planted across the city, adding that 27.5 lakh saplings have already been planted.