The term 'late-blooming flower' refers to a type of flower that blooms later in the season than other flowers. In this case, the crossword solution is 'ASTER, ' which is a genus of flowering plants in the family Asteraceae. Asters are known for their daisy-like flowers and are often used in gardens and bouquets. They typically bloom in late summer or early fall, making them a perfect choice for late-blooming flower.