After the encounter with Kite Man, players will make their way to the Botanical Gardens, where the final mission of the third chapter takes place. This LEGO Batman: Legacy of the Dark Knight mission contains 5 Venus Fly Traps, 5 WayneTech Caches, and 1 Red Brick. Since the vine traps and spiked tentacles can make the level frustrating, players might forget to thoroughly explore every room for collectibles, which is why this guide includes all of their locations alongside images to help.

For help finding collectibles and more, see our LEGO Batman: Legacy of the Dark Knight collectibles hub.

lego-batman-legacy-of-the-dark-knight-how-to-get-all-suits
All Suits in LEGO Batman: Legacy of the Dark Knight (How to Unlock & Change Suits)

Find out how to get and equip all suits and outfits in LEGO Batman: Legacy of the Dark Knight with this dedicated guide.

1

Poison Ivy Collectibles Overview

Collectible

Objective

Location

Venus Fly Trap #1

Investigate the botanical gardens

When you drop into the first room, turn to the right to find this collectible.

WayneTech Cache #1

Investigate the botanical gardens

Use Batman’s gadget to create an opening in the waterfall that leads to the Cache.

Venus Fly Trap #2

Investigate the botanical gardens

In the room with the first enemy encounter, turn around to find this collectible.

WayneTech Cache #2

Talk to the scared scientist

Before talking to the scientist, aim your Batarang at the targets to create petal platforms that you can use to reach the Cache.

Venus Fly Trap #3

Find Dr. Isley's lab

Move the petals using Robin, before leaving the room, look down to your right for this collectible.

WayneTech Cache #3

Find Dr. Isley's lab

Before feeding the plants the strawberries, look to your left.

Venus Fly Trap #4

Find Dr. Isley's lab

This collectible is opposite the greenhouse containing the puzzle.

Red Brick (Flower Power) #1

Find Dr. Isley's lab

Head inside the greenhouse and place the red flower in the left socket and the green flower in the right socket to reveal the Red Brick.

​​​​​​​WayneTech Cache #4

Find Dr. Isley's lab

Move past the first slamming tentacle plant and turn around to find the Cache below.

WayneTech Cache #5

Find Dr. Isley's lab

Go across the Snap Plants and look to your right for a hook that Robin can trace to reveal a grapple point leading to the Cache.

​​​​​​​Venus Fly Trap #5

Enter the lab

Use the vehicle to clear the plants on the left and destroy the Venus Fly Trap collectible.

Venus Fly Trap #1

  • Use the plant at the start to reach the next room.
  • As soon as you drop, look to your right to spot the first Venus Fly Trap.

WayneTech Cache #1

  • As Batman, look toward the waterfall and use your hook.
  • This will create an opening in the waterfall leading to the first Cache.

Venus Fly Trap #2

All Poison Ivy Collectibles in Lego Batman Legacy 6 Image via GameRant; Source: TT Games, Warner Bros
  • Freeze spray the giant plant and proceed into the next room.
  • Drop down and fight the numerous enemies.
  • In the same spot where you dropped down, the Venus Fly Trap will be behind you.

WayneTech Cache #2

  • When you need to talk to the frightened scientist, switch to Robin.
  • Aim his Batarang at the three targets, which will create petal platforms leading upward.
  • At the top, you will find the Cache.

Venus Fly Trap #3

  • In the room where you use Robin’s gadget to trace a hook line and move the petal, proceed to the final petal.
  • Before going through the door labeled “Carnivorous Plants of the Tropics,” look down to your right to find this collectible.

WayneTech Cache #3

  • After your second encounter with multiple enemies, you will come across a section where you need to feed the plants strawberries.
  • Before doing so, take the left path, which leads to the Cache.

Venus Fly Trap #4

  • In the next room, you will come across a greenhouse on your left.
  • Opposite the greenhouse is the Venus Fly Trap, which is easy to spot by scanning the area.

Red Brick (Flower Power) #1

  • Head inside the greenhouse to find a puzzle.
  • Place the red flower in the left socket and the green flower in the right socket.
  • Completing the puzzle will reward you with a Red Brick.

WayneTech Cache #4

All Poison Ivy Collectibles in Lego Batman Legacy 18 Image via GameRant; Source: TT Games, Warner Bros
  • When you come across the first tentacle plant that slams downward, move past it and turn around.
  • At the base of the plant is a platform containing the Cache.

WayneTech Cache #5

  • Inside the room where you must move through the Snap Plants, continue past the initial three plants until you reach the safe platform.
  • On your right will be a tether hook that Robin can connect to reveal a grappling point leading to the Cache.

Venus Fly Trap #5

  • In the next room, you will need to destroy several objects to build a vehicle capable of breaking the blockage.
  • Using the vehicle, destroy the plants to the left of the door to reveal the final Venus Fly Trap.
LEGO Batman Legacy of the Dark Knight - AchievementTrophy Guide
LEGO Batman: Legacy of the Dark Knight - Achievement/Trophy Guide

There are 52 achievements in LEGO Batman: Legacy of the Dark Knight, and if you're looking to unlock them all, you're in the right place.

All Poison Ivy Collectibles Rewards

All Poison Ivy Collectibles in Lego Batman Legacy 24 Image via GameRant; Source: TT Games, Warner Bros
  • Collecting all 5 Venus Fly Traps rewards you with the Venus Fly Traps Batcave Trophy.
  • You can also get the Flower Power Red Brick to change your outfit colors to yellow.

Don't worry if you've missed any collectibles, as you can replay missions with this guide!

You can also check out more of our guides, where we cover all collectibles so you won't miss a thing:

Top Critic Avg: 84/100 Critics Rec: 93%
Released
May 22, 2026
ESRB
Everyone 10+ / Crude Humor, Fantasy Violence, In-Game Purchases
Developer(s)
TT Games
Publisher(s)
Warner Bros. Games, Warner Bros. Interactive Entertainment
LEGO Batman Legacy of the Dark Knight - trailer screenshot

WHERE TO PLAY

PHYSICAL

Genre(s)
Action, Adventure, Superhero, Open-World