When Leaves Yellow, Your Plant Could Have a Fever By Dan Gill • Feb 16, 2013 TweetShareGoogle+Email Originally published on February 18, 2013 3:36 pm Yellow leaves and leaf drops are a rather ambiguous symptom in plants. A range of problems and normal cycles cause it. Listen Listening... / Copyright 2013 WRKF-FM. To see more, visit http://www.wrkf.org. TweetShareGoogle+EmailView the discussion thread.