How to Use the Rainbow Machine in Grow a Garden? If youβve stumbled upon the new Rainbow Machine in Grow a Garden and wondered what on earth it does (or why thereβs suddenly a glowing shark hanging around), this guide is your answer. Whether you’re a veteran gardener or someone who’s just figuring out how to water their first cabbage, let me walk you through how to make the most of the Rainbow Machine β and whether it’s worth the Robux investment.
How to Use the Rainbow Machine in Grow a Garden?
What Is the Rainbow Machine?
The Rainbow Machine is a newly introduced event mechanic designed to boost your chances of obtaining rare, rainbow-tier creatures or items. Once activated, it temporarily supercharges your world, increasing the likelihood of rainbow spawns and rare drops.
But hereβs the kicker β youβll need to fill it using Robux (299, to be exact). Once activated, it runs on a timer, giving you around 15 minutes of rainbow-charged madness.
How It Works

Letβs break it down step-by-step:
- Activate the Machine
Head over to the Rainbow Machine in your base. Once there, you’ll see the option to “fill” it for 299 Robux. Once activated, the area becomes charged, and youβll notice a change in the world: glowing effects, increased spawn activity, and yes, rainbow variants of various creatures. - What Happens Next?
After activation, rare creatures and objects begin appearing around your base or the map. Some of them might be mythics, others gold or rainbow-tier. You’ll have about 15 minutes to collect as much as you can. - Keep Your Base Ready
Make sure you have enough room in your inventory. If your storage is full, you might miss out on something amazing β and when the timerβs ticking, every second matters. Delete less valuable items to keep space open for those high-tier finds. - Avoid Public Chaos
Use a VIP server if you can. When you’re on a public server, anything that spawns can be stolen by other players. If you’re spending Robux to activate this thing, make sure you get the rewards. Keep your base locked or go solo.
What Can You Get?
The loot depends on chance β this is not a guaranteed jackpot. However, during one test session, players reported getting:
- Brain Rot Gods
- Rainbow creatures
- New mythics introduced during the update
- Gold-tier versions of common mobs
Even basic objects like tires and ducks can show up as rainbow versions, which β while not always useful β look amazing and add value to your collection.
Pro Tips for Maximum Rewards

- Be Ready to Collect: Once something spawns, you need to be fast. Stay active, and donβt AFK unless youβre in a safe, locked server.
- Use Server Luck Boosts: If youβre feeling lucky (or want to improve your odds), consider activating server-wide boosts or spins from the in-game shop.
- Stay in the Rainbow Zone: Several players noted that entering the Rainbow Machine interface may increase spawn activity. Try experimenting with how long you stay in the menu.
- Watch the Timer: The machine only runs for a short time, so plan your runs carefully. Thereβs a visible countdown, and once it ends, itβs done until you activate it again.
Is It Worth the Robux?
That depends on your goal. If you’re a collector aiming to snag rainbow versions of every creature, then absolutely β the machineβs boost is a game-changer. If you’re casually playing and not chasing perfection, the cost might feel steep given that the rarest items still rely heavily on RNG.
That said, it’s hard to argue with the excitement of seeing a rainbow Brain Rot God pop into your world.
Final Thoughts
The Rainbow Machine is a flashy, fun, and chaotic addition to Grow a Garden. Itβs not just about planting and harvesting anymore β this update adds a new layer of energy to the game, blending strategy with timing and chance.
If you want to see what it can do for yourself, jump in when you’re ready, make sure your inventoryβs clean, and keep your eyes peeled β because when the rainbow hits, anything can happen.
Stay sharp, plant fast, and good luck with your next rainbow run.