tweet-Starting May 5th (in PDT time), Grass-type Pokemon will appear more often in Pokemon GO. The event will end on May 8th. https://t.co/e7zAuabECi By: Water Pokémon Master · Posted Posted onMay 4, 2017 at 11:22 AM · 0 Comments Starting May 5th (in PDT time), Grass-type Pokemon will appear more often in Pokemon GO. The event will end on May 8th.