The Ultimate Guide to Terrariums

Discover everything you need to know about terrariums—from their history and plant choices to DIY tutorials and 2025 trends. This mega guide covers the best plants, containers, styling ideas, care tips, and more. Whether you’re a beginner or an enthusiast, learn how to make a terrarium that thrives and elevates your home décor.
Terrariums aren’t just about plants—they’re about creating a living piece of art. Because they thrive in small, enclosed environments, they’ve become a favorite for apartment dwellers and anyone short on outdoor gardening space. They also tie into modern eco-friendly living, bringing a sense of calm and greenery into homes, offices, and even classrooms.

The Ultimate Guide to Terrariums
A square glass terrarium containing green succulents, moss, black pebbles, and driftwood sits on a white desk.

1. What is a Terrarium?

Beyond their decorative appeal, terrariums are now celebrated in wellness trends. Studies show that keeping greenery in your living space can reduce stress and improve air quality, and terrariums are one of the easiest ways to enjoy these benefits in compact form.

Definition and History

A terrarium is a miniature indoor garden enclosed in glass, creating a natural display that’s both beautiful and functional. First popularized in Victorian times as “Wardian cases,” terrariums are now trending again thanks to their low-maintenance appeal and décor versatility.

Terrariums vs. Potted Plants

Unlike traditional potted plants, terrariums create a contained ecosystem—especially closed terrariums, which recycle their own water through condensation. Potted plants require more frequent watering and exposure, while terrariums balance themselves naturally.

2. Types of Terrariums

Closed Terrariums

Self-sustaining ecosystems ideal for mosses, ferns, and tropical plants. They’re almost self-sustaining, but beginners should be careful not to overwater since moisture can’t escape easily.

Open Terrariums

Designed for succulents, cacti, and air plants that need airflow and less humidity.These are perfect if you love sculptural plants like succulents and cacti, as the airflow prevents rot and keeps them thriving.

Hanging Terrariums

Lightweight and stylish, these work well with air plants and are ideal for modern interiors with limited table space.

Wall-Mounted Terrariums

A smart way to bring vertical greenery into small apartments, doubling as wall art.

Tabletop Terrariums

Classic centerpieces that can be dressed up with seasonal decorations or kept minimalist for a sleek look.

Specialty Terrariums

Aquatic Terrariums with water-loving plants.
Hanging Terrariums for lightweight décor accents.
Wall-Mounted Terrariums as vertical gardens.
Tabletop Terrariums as chic centerpieces.

Read the full guide: How to Make a DIY Terrarium at Home

3. Best Plants for Terrariums

Closed Terrarium Plants

Moss, ferns, fittonia, and other tropicals thrive in humid, sealed environments.

Open Terrarium Plants

Succulents, echeveria, haworthia, and air plants are best for open designs.

Herbs & Edible Terrariums

Basil, thyme, and mint can be grown in larger open terrariums with proper drainage.

Pet-Safe Terrarium Plants

Options like peperomia and certain ferns are non-toxic and safe for homes with pets.

Not sure which plants to choose? Here’s a list of the The Best Plants for Closed Terrariums beginner-friendly and easy to care for.

4. Terrarium Containers & Designs

Glass Bowls & Jars – beginner-friendly options.
Lanterns & Orbs – modern terrarium containers.
Aquariums & Large Glass Cases – perfect for statement pieces.
DIY Containers – mason jars, lightbulbs, wine bottles, or upcycled vessels.

Terrarium Design Styles

From modern minimalist terrariums to vintage apothecary jars or fairy-garden inspired designs, containers define the aesthetic.

5. Step-by-Step: How to Make a Terrarium

If you’re just starting out, keep it simple by choosing hardy plants such as moss or succulents and avoid mixing plants with very different care needs. A common mistake is overwatering—remember, terrariums need much less water than potted plants since the glass container helps retain moisture.

Materials Needed

Glass container
Gravel or pebbles
Activated charcoal
Potting soil
Plants of choice
Decorations (rocks, moss, shells, figurines)

Read the full guide → Tools and Materials Essentials for Creating Terrarium

Layering Guide

Start with gravel for drainage → add charcoal to filter → add soil → carefully plant → decorate.

Planting Techniques

Handle roots delicately, vary plant heights, and leave enough space for growth.

6. Styling & Decoration Ideas

Miniatures, figurines, and crystals.
Fairy lights for a magical glow.
Natural décor like bark, shells, or stones.
Seasonal terrariums (autumn pumpkins, winter snow-globes, tropical summer looks).

Choose between a clean, minimalist look or a lush jungle aesthetic depending on your style.

Discover more ideas: 10 Creative Terrarium Decoration Ideas for Every Season

A glass terrarium with a miniature fairy garden scene, featuring moss, small red mushrooms, and a stream, illuminated by string lights.

7. Terrarium Care & Maintenance

Watering: Closed terrariums need minimal watering, while open terrariums require regular but light watering.
Light: Bright, indirect sunlight is best. Consider grow lights for low-light homes.
Trimming: Keep plants from overgrowing.
Pest Control: Refresh soil if needed and watch for fungus gnats.

Read the full guide: Terrarium Care & Maintenance

8. Troubleshooting Terrariums

Foggy Glass: Too much moisture, remove lid occasionally.
Dying Plants: Swap out plants unsuited to humidity/light levels.
Mold or Algae: Wipe glass, remove affected plants, adjust watering.
Resetting a Terrarium: Rebuild layers if problems persist.

Read the full guide: Troubleshooting Terrariums: Mold & Foggy Glass

9. Creative Uses for Terrariums

Home Décor: Place on coffee tables, bookshelves, or entryway consoles.
Gifts: Wedding favors, birthdays, housewarming gifts.
Offices & Classrooms: Boost wellness and focus.
Event Centerpieces: Stylish for weddings or seasonal parties.

A laptop, a white mug, and a succulent plant in a clear glass vase on a wooden desk.

10. Terrarium Trends for 2025

Statement Terrariums as living art pieces.
Smart Terrariums with grow lights and self-watering systems.
Biophilic Design: Integrating terrariums into modern architecture.
DIY Terrarium Boom on Pinterest and Etsy.

Read the full guide: Terrarium Trends in 2025: Smart, Stylish & Sustainable

Conclusion

Terrariums are timeless, stylish, and easy to care for—making them the perfect indoor garden project for any space. Whether you love lush closed terrariums or airy succulent displays, this guide gives you all the tools to create your own. Start your DIY terrarium today and bring a little green magic indoors.

This guide gives you the foundation for understanding terrariums, but each part of the process—from choosing plants to styling—deserves its own spotlight. That’s why I’ll be covering detailed tutorials and inspiration in upcoming blogs. Be sure to check back for deep dives into terrarium care, decoration ideas, and the best plants to keep your miniature garden thriving.

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