Golden Watering Can is an upgrade that replaces the Watering Can, and is available to purchase at Crazy Dave's Twiddydinkies for $10,000. It allows the player to water up to four plants at a time. The area the player can water plants which are marked within a circle of water and the ones affected are lightly highlighted. The Gold Watering Can is very helpful with watering plants when the player has accumulated large numbers of them. The plants in the Aquarium Garden do not need to be watered, as with the regular Watering Can. With the Golden Watering Can, the player may want to move some of their plants around to make groups of four to make the Golden Watering Can more effective.
The Golden Watering Can is not as convenient in the Mushroom Garden, as plants in this garden have a greater distance between them; the player can only water up to two plants at a time there.
The animation of the Golden Watering Can watering a plant actually takes longer than the Watering Can, since it will water four plants and will swirl around the marker if clicked, like it is watering four of them.
On the Nintendo DS version, if the player moves the watering can all the way to the top of the left, the can will move out of the center of the circle.
On the Nintendo DS or PC versions of Plants vs. Zombies, if the player has a plant in the top left square, and rapidly click or tap on the watering can, it will show multiple Golden Watering Cans.