The Jack-O-Jelly is one of the standout additions from Part 2 of the Halloween Event in Grow A Garden. As a legendary gear item, it has both practical gameplay value and collector appeal, especially for players looking to strengthen and level their pets efficiently. Below is a clear breakdown of how to obtain it, what it does, and what players should consider when evaluating its long-term value.

Jack-O-Jelly visually stands out compared to other gear.
It resembles a carved pumpkin turned into a glowing drink container, complete with an eerie jack-o'-lantern face. A light gray straw sticks out of the top, while the entire pumpkin emits a warm, orange glow—matching its seasonal Halloween origin. Its design makes it easy to identify in inventory, and many players like to keep one simply for aesthetic collection purposes.
Jack-O-Jelly comes from the Halloween Gear Box, which was only available during the second part of the Halloween Event. Since this box was limited-time, its availability is tied directly to event windows or player trading.
| Item | Chance of Obtainment |
|---|---|
| Bland Jelly | 38.10% |
| Dig Trinket | 23.81% |
| Jack-O-Jelly | 23.81% |
| Sugar Watering Can | 9.52% |
| Pumpkin Lollipop | 3.81% |
| Toffee Tether | 0.95% |
With a 23.81% chance, Jack-O-Jelly is actually one of the more reasonably obtainable items in the box—rarer than Bland Jelly, but significantly easier to get than Pumpkin Lollipop or Toffee Tether. Players who opened multiple Halloween Gear Boxes often ended up with several Jack-O-Jelly items during the event period.
However, because the Gear Box itself is limited, Jack-O-Jelly's supply is now capped. This is what gives it long-term value in the trading economy.
Jack-O-Jelly's limited release means its supply won't increase unless the event returns, so its trading value tends to rise over time—especially among players leveling pets efficiently. If you're looking to expand your collection or speed up growth, it's worth comparing market offers and timing trades carefully. For those who prefer a more straightforward option, you can also buy grow a garden items at U4GM to save time and focus on gameplay.
Jack-O-Jelly is a gear item used to grant XP to pets.
When consumed, it provides:
+100 XP to the selected pet
This makes it valuable for speed-leveling pets, especially newly hatched ones or pets you're preparing for breeding, mutation, or event challenges.
Because 100 XP is a meaningful boost, especially across multiple uses, players often stock these for efficient progression rather than using them instantly.
The value of Jack-O-Jelly generally increases after the event ends. Since it provides direct XP benefit, it isn't just a cosmetic collectible—it has gameplay utility, which keeps it relevant long-term. Items that improve pet progression tend to remain in demand, even after seasonal hype fades.
In most trading environments, Jack-O-Jelly sits in the mid-to-high tier market bracket—not as expensive as ultra-low-drop items like Toffee Tether, but more desired than common or cosmetic-only gear.
Jack-O-Jelly is a legendary pet-training item from the Part 2 Halloween Event. It is obtained from the Halloween Gear Box with a 23.81% drop chance and grants 100 XP to any pet. Its value stems from limited availability, ongoing usefulness, and its memorable seasonal design. If you have one, it's worth holding onto unless you're using it to accelerate key pet development or trading for another high-value seasonal item.