Sustainability Week 2026 in Pokémon GO: Costume Galarian Corsola, Shiny Toedscool and Silicobra
By Matt · Published · Updated Sustainability Week 2026 ran from 14 to 20 April. It debuted Galarian Corsola wearing rose-coloured glasses, shiny boosted on Routes and in 7km Eggs, plus the shiny Toedscool family. Silicobra debuted in the wild and took 50 Candy to evolve into Sandaconda, and several Pokémon were shiny boosted, including every Castform form.
Sustainability Week 2026 had a new Pokémon, a new shiny, a new costume Pokémon and shiny boosts. It had it all.
Dates
Sustainability Week ran from 14 to 20 April 2026.
What was featured
- Costume Galarian Corsola: Galarian Corsola wearing rose-coloured glasses debuted. You could catch it on Routes or hatch it from 7km Eggs, and it was shiny boosted.
- Shiny Toedscool: the shiny Toedscool family debuted.
- Silicobra: debuted in the wild, and took 50 Candy to evolve into Sandaconda.
- Shiny boosts: a bunch of Pokémon were shiny boosted, including the entire Castform range.
Matt's takeThis event was jam packed.
FAQ
When was Sustainability Week 2026?
From 14 to 20 April 2026.
How did you get costume Galarian Corsola?
On Routes or from 7km Eggs, and it was shiny boosted.
How much Candy does Silicobra need to evolve?
50 Candy to evolve into Sandaconda.
Which shiny debuted in Sustainability Week 2026?
Shiny Toedscool and its evolution Toedscruel.
Get Matt's full take
The extended write-up on Patreon has Matt’s commentary, what to prioritise and Matt’s own plan.