Sprinkler

Waters the 4 adjacent tiles every morning.
Overview
The Sprinkler is a crafted item that automatically waters nearby crops every morning. When placed, it waters the four tiles directly above, below, left, and right of it, but only if those tiles have been tilled. It is unlocked at Farming level 2, making it one of the earliest tools for reducing daily crop maintenance.
Sprinklers cannot be placed on sand. They can water 

Sprinklers can also receive upgrades after being placed. Only one upgrade can be applied to a single Sprinkler at a time, and picking up the Sprinkler removes the upgrade without destroying it, so upgrades can be recovered and reused later. The upgrades listed for this item are 

- Waters the four adjacent tiles every morning.
- Only tilled soil is affected.
- Unlocked at Farming level 2.
- Cannot be placed on sand.
- Can water Slime Hutch troughs.
- Cannot water Garden Pots or the pet’s water bowl.
- A Torch can be placed on it for minimal lighting.
- Supports one attached upgrade at a time.
- Picking it up removes, but does not destroy, its upgrade.
The Sprinkler is not used in any bundles and is not used in any quests.
Official description
Waters the 4 adjacent tiles every morning.