A dying of the young shoots in the fall and early winter is sometimes
noticed. This occurs before they can have been injured by severe cold
and its cause is not known. It usually occurs in feeble trees, those
injured by previous winter killing or perhaps those suffering from root
knot. A similar trouble is noted by A. F. Barron, of Chiswick, England,
(The Garden, June 20, 1891, p. 577). He finds it occurring in trees
grown in pots, and says it is there seldom noticed in trees growing out
of doors.