This guide will go over the Rite of the Pollip Wish in Hollow Knight: Silksong, including a map of where to find each item.
How to Complete Rite of the Pollip
Rite of the Pollip is a Wish available shortly after arriving in Shellwood, where the NPC Greyroot tasks you with finding Pollip Hearts.
There are 6 Pollip Hearts, dropped by large purple plants across the area (not to be confused with the purple enemy spawners.) Destroying all of these and bringing them back to Greyroot will complete the Wish.
All Pollip Heart Locations

The Pollip Heart at the top of Shellwood is found in a hidden area after destroying the purple enemy spawner inside the wall. The one to the right of the rightmost save point is also hidden behind some vines that can be destroyed.
Wish Reward
Handing in all 6 Pollip Hearts gets you the Pollip Pouch, a tool that applies venom to other tools once equipped to your Crest. As a blue tool, it takes up the same slot type as Druid's Eye and Warding Bell. Keep a note of where to find Greyroot, as you might need to revisit them later down the line.
That's all for the Rite of the Pollip! Make sure to check out more of our Hollow Knight: Silksong guides below.