Possible Clues:

• Flowers for mothers?
• Some British parents
• Flowers at Texas homecomings, briefly
• Relatives of zinnias
• Infectious viral disease with no protection initially for relatives
• Colorful fall blooms, for short
• Certain parents, in Liverpool
• Morrissey's are from the "Slum"
• "___ the word!" or some flowers
• Fall flowers, briefly