Starting this weekend, May 5th, a larger amount of Grass-type Pokémon will be appearing on Pokémon GO. Professor Willow has predicted that this strange influx will cease on May 8th — so capture as many of them as you can, trainers!
|Details of the event, as stated on the official website:|
"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. These Pokémon will appear in the wild more frequently starting the afternoon of May 5, but only for a short period of time. We anticipate that Pokémon will return to their normal habitats on May 8, 2017 PDT.
Help us contribute to Professor Willow’s ongoing research by catching as many Grass-type Pokémon as possible this weekend. While you’re out with friends and family, don’t forget to document your findings using the Pokémon GO AR camera and share your screenshots on social media using #PokemonGO."