The Grandmaster Sprinkler is a rare Prismatic Gear introduced in the Cooking Update of Grow a Garden. Known for offering some of the strongest plant-growth and pet-boosting benefits in the entire game, it is widely considered one of the most valuable items a player can obtain.
What the Grandmaster Sprinkler Does
When placed, the Grandmaster Sprinkler dramatically enhances plants within its radius. Any new plant that grows inside its area will benefit from:
- Massively increased crop size
- Greatly boosted mutation chances
- Faster growth rate
- Pet-based boosts
In terms of numbers, crops receive a 4× size multiplier (+3 when stacking with other sprinkler types). The sprinkler remains active for 10 minutes per use.
Although the pet boost does not reduce ability cooldowns, it effectively increases the pet’s passive ability by treating the pet as if it weighs +4 kg more.
Appearance
The Grandmaster Sprinkler features a distinct light-red and black color palette. Unlike the circular shapes of the Basic and Advanced Sprinklers, it uses:
- Four line-shaped water shooters
- Two small top shooters
- A gear-like decorative ring beneath the jets
- A black base, consistent with all other sprinklers
Its design resembles elements from the Master and Godly Sprinklers while still maintaining its own unique prismatic look.
The Grandmaster Sprinkler is one of the most powerful prismatic tools in Grow a Garden, offering massive boosts to plant growth, mutation chances, and fruit size. Unlike any other sprinkler, it also enhances grow a garden pets by increasing their passive strength as if they weighed 4 additional kilograms. With its unique light-red and black design, wide radius, and 10-minute duration, the Grandmaster Sprinkler stands out as a top-tier upgrade for players aiming to maximize both their crops and their pets’ performance.
How to Obtain the Grandmaster Sprinkler
Current Obtainability
Players can currently acquire the Grandmaster Sprinkler through:
- Gear Shop
- Sheckle 1,000,000,000
- Appears with a 0.5% stock chance
- Or can be bought for Robux 279
- Drops from enemies
- Mole
- Pancake Mole
- Imp
- (Very low drop rate)
Previous Obtainability
Before the most recent changes, the Grandmaster Sprinkler could also be earned by:
- A 2.35% chance from Chubby Chipmunk’s acorns
- Completing an Evo III crop evolution during the Seed Stages Event
- Completing 50 Fall Activities during the Fall Market Event
Item Summary Table
| Category | Details |
|---|---|
| Tier | Prismatic |
| Cost | Sheckle 1,000,000,000 / Robux 279 |
| Effects | Major boosts to growth speed, mutation, fruit size, and pets; lasts 10 minutes |
| Currently Obtainable? | Yes |
| Date Added | August 2, 2025 |
Trivia
- It is the first and only sprinkler that affects pets.
- It is the only sprinkler with no outline on its Gear Shop icon.
- It shares its price with Moon Mango and Fall Fountain, making it the fourth most expensive item in the game.
- It is the first Prismatic Sprinkler and the second Prismatic Gear overall (after the Levelup Lollipop).
- It has the largest radius of any sprinkler.
- Like the Levelup Lollipop, it follows a stock schedule in the Gear Shop.
- Combining all sprinkler types and using special pets (e.g., Moon Cats) allows players to maximize plant size.
- During the Admin Abuse War, Jandel used admin commands to restock three of them.
- During the Safari Harvest Event, its water particles (and those of all Gear Shop sprinklers) changed to rainbow colors.
- It is the most expensive sprinkler in the game; the next highest tier of sprinklers cost 50,000,000 Sheckles, which is 950,000,000 less.
