The term 'A Flower Sprang Up' can be solved by the crossword solutions AROSE (5 letters), LEAPT (5 letters) and GREW (4 letters). AROSE is a verb meaning to come into existence or to appear suddenly. LEAPT is also a verb, meaning to jump or move suddenly and quickly. GREW is a verb meaning to increase in size or amount. Together, these three words describe the process of a flower suddenly appearing and growing.