The United Nations established the International Day of Plant Health to draw attention to the pests and diseases that affect plants. The American chestnut is a good tree to get to know on this day.
Chestnut blight killed much of the tree’s aboveground growth across its native range. Some surviving roots still send up shoots, even where a mature chestnut hasn’t stood for decades. Look closely at a chestnut leaf and you’ll see a row of sharp teeth along the edge, a handy clue when you’re learning to identify the tree.
About the observance
https://www.un.org/en/observances/international-day-plant-health
More about the featured species
https://acf.org/