Bluey: The Videogame

In each area you'll find a watering can and a tap. Pick up the watering can and fill it under the tap. Then walk up to any plant that shows that it can be watered and water it a few times. This will pop the first time you water one to maturity. But you'll need to water several different ones to complete the sticker book.

Missable - This one can be gained in Episode 1 of the game and is missable, you need to pick up the watering can at the back of the house, fill it using the outside tap then head round the left side of the building from the tap, water the plants along the side of the house until they grow to full height and you'll get a plant sticker and achievement.

This guide will walk you through this achievement and all of the other 21 achievements in under 2 hours. Pretty Cool Leaves achievement starts at around 10:50 into the video. All achievement timestamps are shown in the video Description.