Pokemon Go’s Sustainability Week event takes place next week from April 20-25, developer Niantic has announced. The event will feature increased spawns of Poison, Grass, and other kinds of Pokemon, and you’ll have your first chance to catch Shiny Trubbish as well as the new Gen 6 monster, Binacle.

Throughout Sustainability Week, Grimer, Drilbur, Ferroseed, Trubbish, and other monsters will appear in the wild more frequently than usual, while Diglett, Tangela, Goldeen, Budew, Cherubi, and Finneon will hatch more frequently from 5 km eggs. The aforementioned Binacle will also be appearing as a Raid boss alongside Vileplume, Exeggutor, and other Pokemon.

In addition to the increased Pokemon spawns, there will be new event-exclusive Timed and Field Research tasks. Completing these will lead to encounters with Chespin, Cottonee, Binacle, and other monsters. All players will also be able to claim a free Sustainability Week t-shirt for their avatar from Pokemon Go’s style shop.