催花雨（さいかう）: 菜の花の咲いている時期に降り続く雨のこと。 菜の花をはじめ色々な花を催す意味。 他にも「養花雨」「育花雨」とも。

Saikau: rain that continues during the season when rapeseed flowers are in bloom. It means to hold a variety of flowers including rapeseed flowers. It is also referred to as' Youkau 'or' Ikukau'.