Flower Girls: Coming Up Roses by Catherine R Daly

There's a festival in Delphinium Bloom's town and her family are busy preparing flowers. Del is also preparing to ask her crush, Hamilton to the big bonfire.
 
But then the Bloom's discover that they haven't been asked to make the bouquetsfor the festival parade - a rival florist has been hired instead.
 
Can Del come up with a brilliant flower fix before it's too late?