宵よい待まち草ぐさよいまちぐさMeanings1nounevening primroseA flowering plant that opens its blooms in the evening. The name 宵待草 literally means 'twilight-waiting grass'.宵よい待まち草ぐさは夕ゆう方がたに黄き色いろい花はなを咲さかせる。