Hydra Pet in Grow a Garden: Ability, Rarity and How to Get It
By Jordan Lee · Pet Mechanics Specialist · Updated · Last verified October 28, 2026
The Hydra is a Divine pet in Grow a Garden that comes from the Season Pass, not from an egg. On a timer it ages itself up, fully hatches an egg and applies the Terran mutation to a fruit. A second ability spreads mutations when you sell Terran fruit.
What Is the Hydra Pet in Grow a Garden?
Grow a Garden is a Roblox farming game. Pets are companions you hatch, buy or earn. The Hydra here is the Roblox pet, not the mythical animal. It is a Divine pet, which is a rarity label.
The Hydra was added with the Safari Harvest update on November 1, 2025. It comes from the Season Pass, so you cannot hatch it from an egg.
Hydra Pet at a Glance
| Fact | Value | Status |
|---|---|---|
| Rarity | Divine | Reported |
| Source | Season Pass, not eggs | Reported |
| Introduced | November 1, 2025, Safari Harvest | Reported |
| Available today | Guides disagree | Conflict |
| Trade value | ⚠️ PENDING | ⚠️ PENDING |
| Huge, Titanic and Godly sizes | ⚠️ PENDING | ⚠️ PENDING |
Hydra Abilities: Three-Headed and Earth Deity
The Hydra has two abilities. Three-Headed runs on a timer. Earth Deity reacts when you sell fruit. The Hydra cannot be mimicked or refreshed, so copy and cooldown pets cannot repeat Three-Headed. For other pet abilities, see Pet Abilities.
| Ability | What it does | Note |
|---|---|---|
| Three-Headed | Ages the Hydra up by 1, fully hatches an egg, then applies the Terran mutation to a fruit. | Cannot be mimicked or refreshed. |
| Earth Deity | When you sell a Terran-mutated fruit, there is a chance a random mutation from that fruit is applied to a fruit in your garden. | Chance range is in the numbers table. |
Hydra Cooldown and Chance Numbers
Two guides give ranges for the Hydra. They agree on the longest wait and the chance. They disagree on the shortest wait, so that value is PENDING.
| Item | Value | Sources | Status |
|---|---|---|---|
| Three-Headed wait, longest | About 41 minutes | Grow a Garden Calculator wiki (41m 30s), Roonby (41 minutes) | Reported |
| Three-Headed wait, shortest | ⚠️ PENDING | Calculator wiki says 23m 10s. Roonby says 20 minutes. | Conflict |
| Earth Deity chance | About 6% to 12% | Grow a Garden Calculator wiki (6.1% to 12%), Roonby (6% to 12%) | Reported |
| Terran multiplier | ⚠️ PENDING | No two sources read for this page | ⚠️ PENDING |
How to Get the Hydra Pet
The Hydra is a Season Pass reward. It does not drop from any egg, so the Hatching Guide will not help you here. Follow these steps.
- Open the Season Pass screen. Open the Season Pass from the game menu. The Hydra is a Season Pass reward and does not drop from eggs.
- Find the Hydra reward. Look through the pass rewards for the Hydra. The tier is PENDING because only one guide names a tier.
- Claim it. Claim the reward when your pass progress reaches it, if the reward is still on the track.
- Check your backpack. Open your pets to confirm the Hydra is there, then place it in your garden.
Can You Still Get the Hydra?
Guides disagree on whether the Hydra is still on the pass. Open the Event Calendar and the pass rewards screen in game before you plan around it.
| Guide | What it says |
|---|---|
| Grow a Garden Calculator wiki | Marks the Hydra as unobtainable and says it was added on November 1, 2025. |
| Pocket Tactics | Lists the Hydra under obtainable Divine pets with the Season Pass as the source. |
| Mitch Cactus | Says the Hydra was still obtainable as of February 2026. |
| rblxguide | Says it was available mainly through trading after the Safari Harvest event. |
Current availability is PENDING. No two guides agree on today. If you cannot earn it, trading is the other route.
Hydra and the Terran Mutation
Terran is the mutation Three-Headed applies to a fruit. When you sell a Terran fruit, Earth Deity can copy a random mutation from it onto a fruit in your garden. The Terran multiplier is PENDING. For confirmed mutations, see the Mutations hub.
What the Hydra Page Does Not Cover
This page covers the Hydra only. Each of these topics has its own page.
- Trade value. See Pet Values.
- Size classes. Check a size with the Pet Weight Calculator.
- Tier rank. See the Pet Tier List.
- Other Divine pets. The Divine Pets Guide lists them. Two live Divine pet pages are Disco Bee and Queen Bee.
Hydra Data Status: Reported, Conflict and PENDING
Every reported fact above comes from at least two guides read on October 28, 2026: Pocket Tactics, Bloxodes, Grow a Garden Calculator wiki, rblxguide, Roonby, Mitch Cactus.
| Item | Status | Detail |
|---|---|---|
| Rarity: Divine | Reported | Five outside guides say Divine. The older GAGdata pet database stores Legendary with no outside source. |
| Source: Season Pass | Reported | Four outside guides agree. The older database says it hatches from a Legendary Egg, with no outside source. |
| Ability names and effects | Reported | Read from the Calculator wiki, rblxguide and Roonby. The older database ability name has no outside source. |
| Release date: November 1, 2025 | Reported | The Calculator wiki and Roonby agree. |
| Available today | Conflict | Guides disagree. Check the pass rewards in game. |
| Shortest Three-Headed wait | Conflict | 23m 10s in one guide, 20 minutes in another. |
| Season Pass tier and season number | ⚠️ PENDING | One guide names tier 47. It is the only source. |
| Terran multiplier | ⚠️ PENDING | No two sources read. |
| Trade value, size thresholds, XP per hour, base weight | ⚠️ PENDING | No live source. The older database values are not used. |
| Grow a Garden 2 | ⚠️ PENDING | This page covers the original game only. |
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