ClimateNature The real start of Spring: median foliage greenup dates in the United States April 3, 2015 Alex ForWarn’s median start of Greenup date for all vegetation (2000 – 2013). Related Posts:Fall foliage prediction mapThe World's Forests MappedAutumn foliage colors mappedThe fall foliage prediction map (2016)The fall foliage prediction map (2017)The Best World Atlases in 2026Which country has the most palm species?Spring's Early Whisper: Tracking the First Leaves…