A Paniculata type. If you have purchased and grown Hydrangea Limelight from us before, Limelight Prime is an update with improvements on one of the best hydrangeas already on the market. These accomplishments are so impressive that the industry has named Limelight Prime the 2023 Hydrangea of the Year. Lime green blooms hold that color for weeks before transitioning to bubble gum pink and then to rich pink. The strong stems will typically increase the plant size to 5-6 feet tall and wide over three years. No mail order on hydrangeas. Photo courtesy of Spring Meadows.