Bee Balm Stems Broken Off And Leaves Are Yellow And Dropping

Question From: NEW YORK
Q: What or why is my bee balm stems being broken off or eaten and by what. Also yellow leaves and falling off.

A: I don't have a crystal ball. but it could be deer or a wood chuck. Yellow leaves may be the result of excess water or fluctuation of temperatures. Best And Happy Yardening, Nancy.