Chief Minister Pinarayi Vijayan in his Environment Day message sought the support and cooperation of all sections of the society in the government's efforts of tree plantation.
Known Malayalam actor Mohanlal participated in the sapling of plants programme at a college here.
Governor P Sathasivam planted a sapling at the Raja Bhavan compound as part of day's celebrations.
Schools, local self-government bodies and voluntary associations took part in the plant sapling programmes of the government under 'Green Kerala Mission'.
A campaign titled 'Connecting People to Nature' was also launched besides starting a programme to cut down trees that were harmful to the environment.
Meanwhile, BJP as part of its green campaign 'Jalswaraj', distributed more than 10 lakh saplings across the state for planting.
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