Grow A Garden is a popular Roblox experience where you can grow plants, raise pets, and use powerful mutations to increase crop value. Recently, the July 2025 Prehistoric Update went live, which added the Mythical Brontosaurus pet.
The Brontosaurus is one of six pets that you can hatch from the limited-time Dinosaur Egg. This pet’s passive ability increases the size and weight of the pets you hatch from any pet eggs. So, this complete guide will explain how you can get the Brontosaurus and how to make the most of it in Grow A Garden.
How To Get Brontosaurus In Grow A Garden
The Brontosaurus is exclusively available during the Prehistoric Event in Grow A Garden. To get it, you need to trade any pet (except a dinosaur) at the DNA Converter, which you can find next to Graham’s Dinosaur Egg Stand. After you hand over a pet, it takes 60 minutes to get a Dinosaur Egg.
This egg has a 1 percent chance of hatching into a Brontosaurus. Other pets that you can hatch include Raptor, T-Rex, Stegosaurus, Triceratops, and Pterodactyl. Due to the low hatch rate, you will probably need to hatch several eggs to get the Brontosaurus unless you’re lucky.
How To Use Brontosaurus In Grow A Garden
The Brontosaurus is not a mutation-based or crop-affecting pet like others. Instead, its power lies in helping you get better pets. It increases the base size and weight of pets that you hatch from any egg while it’s equipped.
This bonus is capped at 30 percent and can make your pets visibly larger and heavier. These pets will be better at using their passive abilities and they will provide more boosts in your garden.
What Does Brontosaurus Do In Grow A Garden
| Attribute | Value |
|---|---|
| Name | Brontosaurus |
| Rarity | Mythical |
| How to Get | From DNA Converter using any non-Dino pet |
| Passive Ability | Giant Incubator: Pets hatched from eggs have higher base weight (30%) |
| Hunger Capacity | 80,000 |
| Drop Chance | 1% |
| Mutation Effect | None |
All Dinosaur Egg Pets In Grow A Garden
There are six different pets you can hatch from a Dinosaur Egg in Grow A Garden. Each one has a different rarity, and their abilities are also different. Every egg takes four hours and ten minutes to hatch. After you hatch the egg, the pet is automatically added to your collection. Here is a full list of them:
- T-Rex
- Raptor
- Triceratops
- Stegosaurus
- Pterodactyl
- Brontosaurus
All Dinosaur Egg Pets Abilities In Grow A Garden
Each dinosaur pet that you get from the egg has a different skill. Some help in speeding up your plants’ growth, while others duplicate fruit or spread mutations. Here is a detailed breakdown:
| Pet Name | Rarity | Ability Description |
|---|---|---|
| Raptor | Legendary | Amber mutation chance on collect + increased movement speed |
| Triceratops | Legendary | Rams into plants to speed growth + chance to repeat |
| Stegosaurus | Legendary | Duplicates harvested fruit + extra chance on Prehistoric fruit |
| Pterodactyl | Legendary | Applies Windstruck or Twisted mutation + increases jump height |
| Brontosaurus | Mythical | Increases size and weight of pets hatched from eggs (up to 30%) |
| T-Rex | Divine | Eats a fruit mutation and applies that same mutation to other fruits in your garden |
What Is The Prehistoric Event
The Prehistoric Event in Grow A Garden is a time-limited update that added dinosaur-themed crops, pets, cosmetics, and quests. It launched on July 5, 2025, and you can craft Ancient Seed Packs and complete Dino Quests to earn exclusive rewards.
New weather effects like Sandstorm were added in this event as well, along with new gears like Mutation Spray Amber. You can also trade regular pets for Dinosaur Eggs at Graham’s stand, which you will need to craft Ancient Seed Packs.
What Are The Dino Quests
Dino Quests are time-limited challenges that you can get from Blaire every 12 hours. You get three random quests from a pool of 15, ranging from planting seeds to crafting gear. After you complete them, you will be able to unlock milestone rewards.
All Dino Quests In Grow A Garden
| Quest Description |
|---|
| Plant 100 Carrots |
| Plant 10 Watermelons |
| Plant 5 Pumpkins |
| Plant 25 Bamboo |
| Plant 1 Mango Seed |
| Grow a Dog to Age 10 |
| Grow a Golden Lab to Age 10 |
| Grow a Bunny to Age 10 |
| Harvest 50 Strawberries |
| Harvest 150 Blueberries |
| Harvest 25 Apples |
| Harvest 10 Coconuts |
| Harvest 5 Dragon Fruits |
| Craft 1 Lightning Rod |
| Craft 2 Mutation Spray Amber |
All Rewards From Dino Quests In Grow A Garden
You need to complete a total of 21 Dino Quests to get all the rewards. After you complete all these quests, you will get 19 Seed Packs, cosmetics, and one Bone Blossom, which is the final and most sought-after reward.
| Number Of Quests Completed | Reward |
|---|---|
| 3 | Volcano Cosmetic |
| 6 | Three Ancient Seed Packs |
| 9 | Long Neck Dino Statue Cosmetic |
| 12 | Six Ancient Seed Packs |
| 15 | Three Mutation Spray Amber |
| 18 | Ten Ancient Seed Packs |
| 21 | Bone Blossom |
How To Complete Dino Quests
To complete Dino Quests in Grow A Garden, you need to speak to Blaire at the center of the event island. You will receive three random quests every 12 hours. Complete these quests by planting crops, harvesting fruits, or aging pets to earn rewards and progress toward event milestones. Every completed set of Dino Quests gives you the following:
- 1x Dinosaur Egg
- 1x Dino Crate
- 1x Ancient Seed Pack
Each quest gives you one tick toward the milestone bar. If you complete all three in a cycle, you get a Dino Egg, Dino Crate, and Ancient Seed Pack. By finishing 21 total quests, you will unlock the Bone Blossom along with multiple packs and sprays.
Frequently Asked Questions (FAQs)
The Brontosaurus has a 1% hatch chance from Dinosaur Eggs, making it one of the rarer pets.
Its passive increases the base weight and size of pets hatched while it’s equipped.
No, you must hatch it from a Dinosaur Egg or receive it by trading pets through the DNA Converter.
It depends—T-Rex applies powerful mutations, while Brontosaurus boosts future pet hatches. Use based on your goals.
Yes, its passive works on all egg hatches, not just Dinosaur Eggs.
Check out Grow A Garden: How To Get And Use Raptor or Grow A Garden: How To Get And Use Stegosaurus for more on Game Geek Fusion!
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