Pokemon GO sees an influx of Grass-type Pokemon over the weekend
Pokemon GO players will notice that a particular type of Pokemon will appear in the wild more frequently than usual. However, that won't last forever, so you'll have until May 8 to catch as many Grass-type Pokemon you can.
Professor Willow's research into Pokémon habitats around the world has uncovered some interesting findings. His initial reports indicate that we’ll see an influx of Grass-type Pokémon sometime this weekend.
Regardless of what device you're using to play Pokemon GO (Android, iOS), there's no need to update your game, as the “Worldwide Bloom” event will be triggered from the server side.
source: Niantic
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