"Maias" is a superstition throughout Portugal, with special focus on the northern territories and rarely elsewhere. Maias is the dominant naming in Northern Portugal, but it may be referred to by other names, including Dia das Bruxas (Witches' day), O Burro (the Donkey, referring to an evil spirit) or the last of April, as the local traditions preserved to this day occur on that evening only. People put the yellow flowers of Portuguese brooms, the bushes are known as giestas. The flowers of the bush are known as Maias, which are placed on doors or gates and every doorway of houses, windows, granaries, currently also cars, which the populace collect on the evening of 30 April when the Portuguese brooms are blooming, to defend those places from bad spirits, witches and the evil eye. The placement of the May flower or bush in the doorway must be done before midnight.