How to Get Smooth Rock and Create Onix Habitat in Pokopia

In Pokémon Pokopia, building the Smooth Tall Grass Habitat for Onix during the "Yawn Up A Storm" quest is one of the first major hurdles for trainers. Finding the Smooth Rock and understanding the unique mechanics of gathering Dry Tall Grass are key to completing the request.

This guide provides the exact location of the Smooth Rock and the specific steps to restore Onix's favorite habitat.

How to get Smooth Rock in Pokopia

The Smooth Rock is located inside the same cave where you first encounter and rescue Onix in the Withered Wasteland area.

Precise Location

Head back to the cave in the northwest corner of the Withered Wasteland.
As you navigate deep into the cave (near where Onix was trapped), look toward the left side of the path.
You will spot a red Poké Ball item pickup sitting on a shelf-like rock formation.
Interact with the Poké Ball to collect the Smooth Rock.

Smooth Rock Location Visual Guide: The item pickup spot inside Onix's cave (Credit: Radio Times).

[!NOTE] You do not need to craft or purchase the Smooth Rock. It is a one-time world item pickup essential for this quest.

How to make Dry Tall Grass

The most confusing part of the habitat recipe is obtaining Dry Tall Grass. Unlike regular grass, this item cannot be bought or crafted; it must be harvested using a specific Pokémon skill.

The Leafage Trick

Find a patch of Tall Grass on dry ground (ground that has NOT been watered).
Use the move Leafage directly on the dry grass patch.
The grass will transform into Dry Tall Grass, which you can then collect.

Building the Smooth Tall Grass Habitat

Once you have 1x Smooth Rock and 4x Dry Tall Grass, you are ready to assemble the habitat.

Installation Layout

Place the 4x Dry Tall Grass in a 2x2 square grid on the ground.
Place the Smooth Rock immediately next to the 2x2 square.

Habitat Layout Layout: The correct 2x2 arrangement for the Onix habitat (Credit: Radio Times).

When the arrangement is correct, a notification will appear confirming that the Smooth Tall Grass Habitat has been restored. You can then speak to Onix to finish the quest!