Step-by-Step Terrarium Guide for Beginners
If you're new to terrariums and want a fun, easy, and creative project, this guide is for you. I'll walk you through building your very own miniature ecosystem in a jar with no experience needed!
Why I Love Terrariums (And Maybe You Will Too)
Terrariums are an easy and stylish way to bring nature home. Think of a tiny, living ecosystem in a clear container. It's self-sustaining (mostly), low-maintenance, and looks super cool. A bit like a mini rainforest on your coffee table or a windowsill.
What You'll Need
Here's my simple terrarium checklist:
- A clean, clear container with a lid - you can upcycle mason jars, old fish tanks, or even use empty spice jars. These are great free options. Alternatively, you can shop for terrarium containers here.
- Drainage layer: I use LECA (light expanded clay aggregate)
- Activated charcoal to keep things fresh
- Terrarium soil that slowly releases nutrients
- Moss and tiny plants that love humidity
- Optional: decorative stones, gravel or decorations for the landscape and finishing touches
Step-by-Step: How I Built My Terrarium
Before You Begin
Take a moment to plan your design, clean your chosen terrarium container and gather all your materials. Take your time and don't rush! Enjoy the process as a mindful, creative activity.
Step One - Prepare the Substrate
Start by adding a layer of LECA for drainage (about 1 in / 2.5 cm for small terrariums and 2 in / 5cm for larger ones). Next, layer the activated charcoal to help prevent odours and mould. Lastly, add enough terrarium soil to comfortably hold your plant roots, and lightly mist the substrate with water to help make it more workable (distilled or rainwater is the best).
Step Two - Assemble Your Terrarium
Carefully remove your plants from their pots and plant them in the soil. Then arrange the moss and decorative elements to create your desired look.
Step Three - Finishing Touches
Make any final adjustments until you're happy with the design. Give your terrarium one last mist (preferably distilled or rainwater). Remember, when it comes to watering, less is more.
Getting Started: Beginner-Friendly Terrarium Plants
Closed terrariums are naturally humid, so choose plants that thrive in those conditions. Great beginner-friendly options include:
- Fittonia - for vibrant colours and toughness
- Asparagus Fern - for height and feathery texture
- Earth Star - a star-like rosette that looks great in terrariums
You can read more about choosing the right plants for your terrarium here.
Taking Care of your Terrarium
Terrariums are low-maintenance, but they still require a little care. Here are some simple tips to keep yours thriving.
Water Sparingly
Only water when there's no condensation left on the glass or when the soil and moss feel dry. Use a mister if you can, and avoid overwatering, as this can lead to rot or mould. If you accidentally add too much water, simply leave the lid off for a few days to let the excess moisture evaporate naturally.
Pay Attention to Light
Terrariums love bright, indirect sunlight but should be kept out of direct sunlight. Too much heat can scorch the leaves, dry out the moss, and quickly turn your greens brown. A pot near a north or east-facing window is ideal, or you can place your terrarium a little back from a brighter window to soften the light.
Prune When Needed
If your plants start to overgrow or crowd the space, trim them back gently with clean scissors. Also, remove any dead or brown leaves. Regular pruning helps keep your terrarium looking neat, prevents plants from competing for light, encourages healthy growth, and prevents mould. Don't be afraid to give them a little haircut; it's part of keeping your miniature jungle balanced.
Don't Be Afraid to Open Your Terrarium
If the condensation stays high or you notice any mould forming, simply open the lid for a few hours to let fresh air in. This helps balance humidity, keeps your plants healthy, and prevents excess moisture from causing problems. Think of it as giving your little ecosystem a gentle breath of fresh air.
My Final Thoughts
Building a terrarium is creative, satisfying, and surprisingly simple when you break it down step by step. Don't be afraid to get your hands in the soil and connect to the beauty of the natural world. Start small, keep it simple, and let nature do its magic.
Monika C - Founder
Shop and Explore
Light-up Terrarium Kit - H: 25.5cm D: 17cm
From £49.99
Terrarium Plants Bundle
£12.99
Terrarium Containers
From £9.99
