Possible Clues:

• "Hereditary" director Ari
• One's blooming rates out of order!
• Flower quicker to dead-head?
• Avoiding this bloomer, doggerel-writer becomes bard
• Cousin of a daisy
• Going topless, boss is making a bloomer
• Middle Eastern plant
• Teacher has not married Daisy
• Member of the sunflower family
• 'Star' of a fall garden