Having been introduced to the Azores Islands of Portugal, they are now very common there, particularly on Faial Island, which is known as the “blue island” due to the vast number of hydrangeas present on the island, and on Flores Island. and Sao Miguel. Species in the related genus Schizophragma, also in Hydrangeaceae, are also often known as hydrangeas. Schizophragma hydrangeoides and Hydrangea petiolaris are both commonly known as climbing hydrangeas. There are two flower arrangements in hydrangeas. Mophead flowers are large round flowerheads resembling pom-poms or, as the name implies, the head of a mop. In contrast, lacecap flowers bear round, flat flowerheads with a center core of subdued, fertile flowers surrounded by outer rings of showy, sterile flowers