Possible Clues:

• Being old, will droop
• Feel the heat on both sides of wine vault
• Comedian around 50 showing loss of energy
• Old-time N.B.A. great Chamberlain
• Go bad, like kale
• What unwatered flowers do
• Become limp, as celery
• Droop during a drought
• Develop a droopy stem
• Mr. Chamberlain