__NOWYSIWYG__ Grass Whistle (くさぶえ Grass Flute) Battle Data Affected by Contest Data Contests (RSE) Super Contests (DPPt) Contest Spectaculars (ORAS) Grass Whistle, formatted as "GrassWhistle" before Generation VI, is a Grass-type move introduced in Generation III. It was the signature move of Roselia in Generation III.