National Tree Growing Day is a significant holiday in Kenya that emphasizes the importance of environmental conservation. This holiday is centered around the crucial act of tree planting, and it is part of a broader initiative aimed at increasing the country's forest cover. The day is celebrated annually on April 21st, with Kenyans across the country taking part in tree planting activities to commemorate the holiday.

The National Tree Growing Day holiday was institutionalized by the Kenyan government as part of its commitment to environmental sustainability. The event brings together people from all walks of life in a collective effort to plant trees and improve the country's natural landscapes. Various institutions, individuals, and groups participate in these activities, including schools, community organizations, and environmental conservation groups.

The National Tree Growing Day plays a crucial role in fostering a culture of environmental responsibility among Kenyans. The holiday mobilizes millions of citizens across the country to engage in tree planting, thereby promoting a greener, more sustainable environment. It also embodies Kenya's commitment to global environmental initiatives, as the nation seeks to mitigate the impacts of climate change through increased forestation.