An ice buildup inhibitor is disclosed useful for preventing ice damming, in particular in conjunction with the use of a closed gutter. A ZnO, which constitutes a material for the transparent electrode, is subject to erosion by acid and alkali, thus, as the case may cause loss of a reliability of the electrode under the influence of ion-containing moisture. The layer of silicon or SiGe may be formed to a thickness of about 5 to 120 nanometers and doped with a dopant, such as indium, for example, to deter the p-type dopant from passing through the silicon or SiGe layer. The probe head has two or more contact pins whose spacing distance is adjustable. The plant habit is compact and upright with a long bloom time and usefulness in the landscape extended by the persistent and colorful rosie calyxes.