noun
flowers of the season; seasonal flowers
Refers to flowers that are currently in bloom according to the season. Often used in poetic or literary contexts.
庭には時花が咲き乱れている。
Seasonal flowers are blooming in profusion in the garden.
茶室の床の間に時花を生ける。
Arrange seasonal flowers in the alcove of the tea room.
More common, everyday expression for 'seasonal flowers'; 時花 is a literary or elegant term.
Compound of 時 (time, season) and 花 (flower). The exact historical derivation is uncertain, but the meaning is transparent from the kanji.