Grow a Garden Alien Invasion Event Guide — March 2026

The Alien Invasion has landed in Grow a Garden, and it is one of the most rewarding events in the game's history. A UFO is circling servers every hour, mutating pets with the exclusive Alienated mutation, and there is a brand-new Alienlike crop mutation that gives a staggering 100x sale multiplier. On top of that, collecting 10 Alienated pets unlocks the UFO Pet Shard — one of the rarest items in the game.

Here is everything you need to know to maximize this event before it ends.

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How the Alien Invasion Works

The event runs on a repeating hourly cycle:

This means you get roughly 10 minutes per hour of active event time. Planning your garden setup before the UFO arrives is critical.

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Getting Alienated Pets

The Alienated mutation is exclusive to this event and cannot be obtained any other way. Here is how to farm it:

Requirements

Drop Rate

Based on community testing, roughly one pet per hour gets mutated during the 10-minute window. This means farming 10 Alienated pets for the UFO Shard takes approximately 10 hours of active playtime.

Strategy

Pro tip: Set a real-life timer for the top of each hour so you are actively in your garden when the UFO spawns. The 10-minute window goes fast.

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The UFO Pet Shard

Once you have collected 10 Alienated pets, bring them to the Alien NPC in the lobby area. Hand over all 10 and you receive the UFO Pet Mutation Shard.

The UFO Shard can be applied to any pet to give it the UFO mutation — one of the most visually striking and stat-boosting mutations in the game. UFO-mutated pets are already commanding premium trade values.

Alternative route: You can purchase UFO Pet Mutation Shards from the Shop for 1,399 Robux (for 10 shards). However, farming them through the event is completely free and gives you the Alienated pets as bonus tradeable inventory.

For more on pet mutations and how they stack, check our Pet Mutations Wiki.

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The Alienlike Crop Mutation

This is where the real money is. The Alienlike mutation can appear on any crop during the Alien Invasion weather event and grants a 100x sale value multiplier.

How It Looks

How to Get It

Maximizing Profit

Plant your most expensive seeds before each hourly UFO pass. A crop that normally sells for 1M Sheckles becomes 100M with the Alienlike mutation. Combined with other mutation stacks, endgame players are reporting single-crop sales in the billions.

For a breakdown of which crops to prioritize, see our Crops Wiki.

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New: Alien Apple Seed

The Alien Invasion event also added a permanent new seed to the Seed Shop: the Alien Apple Seed. Unlike event-exclusive items, this seed stays in the shop after the event ends.

The Alien Apple has unique growing properties and serves as a solid mid-tier crop with good mutation compatibility. It is worth picking up now while prices are low — once the event ends and supply drops, trade values for mature Alien Apple produce will likely rise.

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Event Timeline

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Quick Strategy Checklist

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FAQ

Q: How often does the UFO appear?

A: The UFO circles the server once per hour for a 10-minute window. You must be in-game during this window to benefit.

Q: Can my pets get Alienated if they already have a mutation?

A: No. Pets must have zero existing mutations to receive the Alienated mutation. Remove any mutations before the event window.

Q: How many Alienated pets do I need for the UFO Shard?

A: You need exactly 10 Alienated pets. Turn them in to the Alien NPC in the lobby.

Q: What does the Alienlike crop mutation do?

A: It gives your crop a 100x sale value multiplier — the highest event multiplier in the game. Crops turn teal with electric visual effects.

Q: Can I buy the UFO Pet Shard instead of farming?

A: Yes, the Shop sells UFO Pet Mutation Shards for 1,399 Robux (10 shards). But farming is free and gives you tradeable Alienated pets.

Q: Is the Alien Apple Seed permanent?

A: Yes — unlike other event items, the Alien Apple Seed stays in the Seed Shop permanently after the event ends.

Q: Does the Alienlike mutation stack with other mutations?

A: Yes, the 100x multiplier stacks with existing mutations for potentially massive sell values. Check our mutation stacking guide for the math.

Q: When does the Alien Invasion event end?

A: No official end date has been announced. Expect 1-2 weeks based on previous event durations. Farm as much as you can while it is active.

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For comprehensive Grow a Garden coverage including advanced mutation calculators, complete pet databases, and real-time trading values, visit GrowAGardenGuides.com — your definitive resource for mastering the game.

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Related Guides

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The UFO is circling. Get your garden ready. This event offers some of the most valuable mutations and items in the entire game — do not sleep on it.