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Step by Step: How to make your own terrarium

  • 2 min reading time

Bringing nature into your space doesn’t have to be complicated. A DIY terrarium is one of those projects that hits different: creative, calming and actually useful. You’re not just making something that looks good, you’re building your own mini ecosystem that lasts. Whether you’re upgrading your interior or just want a hands-on moment away from screens, this is your go-to guide. No stress, no overthinking, just create.  

Filling a glass terrarium with plants making it a self sustaining ecosystem.

What you need to get started

Before you dive in, make sure your base is right. A terrarium works best when every layer has a purpose. Think of it as building from the ground up. You’ll need:

  • A glass container (open or closed, depending on your style)
  • Hydropallets for drainage
  • Activated charcoal to keep things fresh
  • Soil, suited to your plants 
  • Mini plants
  • Moss
  • Optional: extras, like decorative elements

Building your terrarium layer by layer

Now comes the part where it all comes together. No need to rush this, the process is half the experience.

  1. Start with a thin layer of hyfropallets at the bottom. This prevents water from building up and keeps your roots healthy.
  2. On top of that, add a bit of activated charcoal. It helps filter the system and avoids unwanted smells or mold.
  3. Next, add your soil. Not too compact, your plants need space to breathe.
  4. Once that’s in place, it’s time to position your plants. Think about composition. Play with height, spacing, and texture. This is where your terrarium becomes yours.
  5. After planting, add moss. This layer brings everything together visually and helps retain moisture. 
  6. Add decorative elements to finish the look. 

Choosing the right plants

Not every plant works in a terrarium, so keep it smart. Go for species that stay small and don’t demand constant care. For closed terrariums: moss, ferns, and tropical plants are your best bet. They thrive in humidity and create that lush, green vibe. For open terrariums, succulents and cacti work better. They prefer dry air and need less watering. Mixing styles? Not a great idea. Keep your ecosystem balanced.

Light, water and placement

Once your terrarium is done, it’s all about keeping it alive without overdoing it. Place it in a spot with indirect light. Direct sunlight can heat up the glass and damage your plants. When it comes to watering, less is more. Closed terrariums often take care of themselves, while open ones need a light touch every now and then. If you see condensation building up too much, let it air out. It’s all about balance.

Why DIY terrariums just hit different

Making your own terrarium isn’t just about decor. It’s about slowing down and creating something with intention. In a world that moves fast, this is your pause button. You decide the look, the feel, the story behind it. No mass production, no copy-paste interiors, just your own piece of nature, shaped by hand. And the best part? It keeps growing, evolving, and adding life to your space without demanding much in return.

 

Ready to build your own green statement?

A terrarium is more than a DIY project, it’s a long-term upgrade for your interior. Clean, natural, and built by you. Explore, get inspired and start creating your own indoor ecosystem. Your space deserves more green and this is the easiest way to make it happen.

Quick inks:
DIY terrariums
Terrarium start & refill kits


FAQ

Is white mold normal in a new terrarium?

Yes, small amounts can appear in the first weeks as the ecosystem stabilizes.

Can I use cinnamon to remove mold?

Cinnamon has mild antifungal properties, but improving airflow and moisture balance is more effective long term.

How often should I open a closed terrarium?

Only when necessary. If condensation is heavy and constant, airing it out helps restore balance.

Does mold mean my terrarium is ruined?

No. In most cases, simple adjustments solve the problem quickly.

Are springtails bad?

No. They are beneficial and help control mold naturally.

How do I get rid of fungus gnats?

Reduce watering, improve drainage, remove organic debris and allow the soil to dry out.

Will insects spread to my houseplants?

Fungus gnats can move to nearby plants if conditions are favorable, so adjusting moisture levels quickly is important.

Should I rebuild my terrarium if I see insects?

Not usually. Most insect issues can be resolved by correcting moisture and cleaning the system.

Can I use chemical insecticides?

It’s not recommended in closed terrariums. Adjusting moisture is safer and more effective long term.

How long does it take to get rid of fungus gnats?

With proper drying and cleaning, populations usually decline within 1–3 weeks.

Are fungus gnats the same as fruit flies?

No. Fruit flies are attracted to fruit, while fungus gnats breed in moist soil.

Other plantcare & tips

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