( CNN ) -- Can you feel the change of seasons in the air ? It 's almost time for apple cider , pumpkin picking and leaves changing color . Autumn days are coming soon . Those shorter days tell trees that it 's time to shut down for the winter . As trees stop photosynthesis -- the process by which plants use sunlight and water to make food -- fall colors will start to appear . Why do leaves change colors ? We know this amazing scientific process happens every year , but we ca n't help but be mesmerized by its fleeting beauty . To celebrate the season , CNN iReport chose some of our favorite autumn photos to share .
The garden exemplifies the beauty of changing seasons . CNN iReporters around the country share their beautiful autumn pictures . Have a beautiful autumn picture to share ? Submit yours at CNN Live .