The 5 Best Bugs to Add to Your Sealed Terrarium

The 5 Best Bugs to Add to Your Sealed Terrarium

Building a sealed terrarium is like making a mini-world inside a glass. While plants are the main attraction, adding a few helpful bugs can make your mini-world even better by keeping it clean and healthy. Here’s a list of the 5 best bugs to put in your terrarium to help it thrive.

1. Springtails

Springtails are tiny bugs that eat mold, fungi, and dead plants, helping keep your terrarium clean. They're great for the soil and don’t harm your plants, making them perfect for any terrarium.

2. Isopods (Roly-Polies/Pill Bugs)

Isopods, also known as roly-polies or pill bugs, eat dead plants and turn them into nutrients that living plants can use. They like moist places, so they’re a good fit for sealed terrariums. They help keep the ecosystem balanced by recycling plant material.

3. Dwarf White Isopods

These little bugs do the same job as their bigger cousins, the roly-polies, but they're smaller. They're great for tiny terrariums, breaking down waste without taking up much space. Plus, their white colour can look cool in your mini-world.

4. Beneficial Nematodes

Nematodes are super tiny worms that eat bad bugs in the terrarium, keeping your plants safe from pests. You can’t see them, but they’re working hard to protect your mini-garden.

5. Ladybugs

Ladybugs are not just cute; they eat aphids, mites, and other pests that might harm your terrarium plants. They’re best for larger terrariums where there’s enough room and food for them.


Adding the right bugs to your terrarium can make a big difference in keeping it healthy and beautiful. These bugs help by cleaning up waste, breaking down dead plants into food for living plants, and keeping harmful pests away. When you pick bugs for your terrarium, think about how big your terrarium is and what it needs. With these 5 helpful bugs, your mini-world will be a more balanced and happy place.

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