Wednesdays, September 3–October 22
Instructor: Mark Shaw, ISA Board Certified Master Arborist at Bartlett Tree Experts
Learn to identify signs and symptoms of woody plant diseases, including the most common biotic and abiotic diseases in the Delaware Valley. Emphases are the diagnostic process, systematic assessment, and the concepts of abiotic disorder and predisposing stresses.
$180; members $162. Takes place at the Barnes Arboretum.
Register online or call 215.278.7200.
View our non-discrimnation clause.