Possible Clues:

• Muddy the ___
• Tends to, as houseplants
• Provides refreshment as serving staff ignore one
• Test the ___
• Elsie and Doris --, comedy duo known as Gert and Daisy
• Maintains a garden at the end of the rainbow with wild aster
• 'Cabin in the Sky' star Ethel
• Maintains a garden for women with wild aster
• 'Hairspray' director
• "Take Me Out to the Coast" band