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This week, on July 5, we celebrate the birthday of A. E. Douglass who was born in 1867. Although an astronomer by training, Douglass is incredibly important to the field of arboriculture. He is known as the “Father of Dendrochronology,” a method of determining a tree’s age based on its rings. He observed a correlation between tree rings and the solar magnetic activity cycle and his research further went on to help detect climate changes from year to year within the tree, as rainier years often produced more growth, hence a wider ring.

For its seventh consecutive year, the University of Maryland has been named a Tree Campus USA by the Arbor Day Foundation.  COLLEGE PARK, Md. – The University of Maryland was honored with 2014 Tree Campus USA® recognition by the Arbor Day Foundation for its commitment to effective urban forest management.