Volunteer Don Winckler from South Paris carts flowers from a delivery truck into the Portland Flower Show at the Portland Company on Fore Street today to be used by exhibitors setting up their displays. The flowers were grown at Cozy Acres Greenhouses in North Yarmouth by Jeff and Marianne Marstaller. This year’s show is called Celebration! and begins with the Opening Night Gala & Awards Ceremony on Wednesday night starting at 6 p.m. The show runs through Sunday.