Also: Barclay Friends Gardens and Radnor Concours D’Elgance & more By Denny Dyroff, Staff Writer, The Times The return of Fun Gus is just one of the exciting signs that the Mushroom Festival in Kennett Square is at hand, kicking off Friday night with the annual parade. Kennett Square and mushrooms are linked together so much that it would seem fitting if the Kennett High sports teams were...