Poison Ivy takes center stage in Mission 12 of LEGO Batman: Legacy of the Dark Knight, trapping Batman and Robin inside the Botanical Gardens. This guide walks you through every step – from escaping the starting room to defeating Poison Ivy and her Snapdragon. Whether you’re following the story or hunting every collectible, you’ll find all 5 Venus Fly Traps, the Red Brick: Flower Power, and all 5 WayneTech Caches covered here.
Related Guides:
Mission 11: Kite Man
Mission 12: Firefly
LEGO Batman: Legacy of the Dark Knight Hub
All Collectibles in Poison Ivy, Mission 12
Apart from the yellow Skill Brick at the end of the mission, you can also find:
How to Replay a Mission
In case you didn’t find all collectibles in the first story playthrough, don’t worry. You can still get it. Play the story to Mission 6: Shreck’s Department Store, where you restore the Batcave.
Then, travel to the Batcave and interact with the computer at the top, next to the red batphone. Here you can select the mission you would like to play again.
You will also see the status. If the box is ticked: Congratulations, you’ve found all the collectibles in this mission. If not, there is still work to be done!
Batcave Trophy: Venus Fly Traps
Find and destroy 5 Venus Fly Traps in Poison Ivy, Mission 12, to receive the Batcave Trophy: Venus Fly Traps. Each adds up to the total of 170 Trophy Collectibles. Therefore, you will have 5 of 170 Trophy Collectibles after destroying all five Venus Fly Traps.
Here’s where they are:
Red Brick: Flower Power
After the section with the strawberry-eating plants, you will come across a locked door again, which Batman can open with the Bat Claw. Don’t open it yet. Enter the greenhouse next to the closed door and conduct the experiment to receive the Flower Power Red Brick.
WayneTech Caches
There are five WayneTech Caches hidden in Mission 12: Poison Ivy. Here’s where:
Botanical Gardens – Mission 12: Poison Ivy Start
Mission 12: Poison Ivy has a quick start, with few activities in the open world. It continues right after destroying the plant in Mission 12: Kite Man.
Investigate the Botanical Gardens
At the start of the story mission, Batman and Robin are trapped in the Botanical Gardens. Inspect the tape recorder on the counter.
Pick up the plant next to the door and put it on the socket where the green water drips down. The plant will grow, and you can climb out.
To continue with the mission, look for the potted plant you can place on the socket as before. But this time, there is no green drip to be seen. Move the nearby vine curtain with Robin’s Cable Launcher.
In the room, use Robin’s staff as a lever to release the green growth liquid onto the potted plant. Climb the grown plant to get to the door.
There is a blue stud to the left of the door, together with another recording. Then, pry the door with Robin’s staff. This will take you to a corridor with double doors at the end.
Destroy the 3 Plant Pods
As in Mission 11: Kite Man, you have to destroy the three pods before you can use the Plant Spray on the main plant. Destroy the big plant and the exploding plants to continue. You can then go through the open door into the next area with enemies below.
Hint: You can’t destroy the pods while there are still explosive plant pots around.
After defeating all enemies, look for the yellow plug on the door and use Batman’s Bat Claw on it to open it. This will release another wave of enemies. Then you can now go through the door. Destroy the pod before talking to Bella Garten.
Find Dr. Isley’s Lab
Robin can now pry the door behind Bella to find Dr. Isley’s Lab. The bottom of the next room is toxic, but there are plenty of anchor points for Robin’s Cable Launcher. This will pull a leaf near, and you can walk on it.
While standing on the leaf, connect it to the next anchor point, and the two will move together. Keep doing this until you are on the leaf at the center.
Continue the story by connecting the last two anchor points with the Cable Launcher and pulling the center leaf to the exit door. Defeat all enemies in this area.
The third recording is next to the plant pod.
To continue with the story, use the Cable Launcher to pull the strawberries ahead towards the plant in the center. They will close and form a path. Two flesh-eating plants follow. With those, you just have to be quick when traversing. Keep doing this until you reach the end of the path.
Next is a section with a plant pod and some big exploding plants ahead. If you go up that little alcove to the right, you will find a purple stud.
Continue to find Dr. Isley’s lab by pulling the door open with Batman’s Bat Claw.
The next corridor is full of spikey tentacles and big explosive plants. Look closely! There are two suspicious golden studs!
Continue to follow the path ahead, avoiding the tentacles and exploding plants.
The door ahead will be destroyed, so you have to take the more treacherous route through the flesh-eating plants and tentacles. Stop at the safe island in the middle.
After grabbing the last WayneTech Cache, go ahead and survive the second stretch of the flesheating-tentacle plants’ path to reach a vine curtain. Pull it away with Robin’s Cable Launcher.
Find the Lab Entrance
You’ve arrived in a big, round room with a car hanging in the tree in front of you. Shoot all three targets with this car to get its parts down. There is also a recording next to the plant pod here.
There is a box with a yellow plug. Switch to Batman to pull it open with Bat Claw. Destroy everything. This should get you enough parts to build a LEGO harvester. Drive it to destroy the plants at the lab entrance. Make sure to get all of them! There is a Venus Fly Trap and a Purple Stud!
The Snapdragon
Defeat Poison Ivy
Defeat Poison Ivy in the first round. In the second round, you will fight her Snapdragon. Dodge its attacks until it either drops a yellow plug or opens the mouths. Pull it with Batman’s Bat Claw or pull the heads together with Robin’s Cable Launcher. Attack it until it fights again. Repeat this to defeat the two.
Rewards
Completing Mission 12: Poison Ivy, grants:
-> 1 Skill Brick (Yellow Brick)
Suits Collectibles:
-> 1x Batman (Sonar Suit)
-> 1x Robin (Batman & Robin)
Additional Collectibles:
-> Batcave Trophy: Venus Fly Traps
-> Red Brick: Flower Power
-> 5 WayneTech Caches
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About LEGO Batman: Legacy of the Dark Knight
Release: May 22nd, 2026
Developer: TT Games
Publisher: Warner Bros. Games
Official Website: https://legobatmangame.com/


























































