Learn how to build beautiful DIY terrariums from scratch with this beginner-friendly guide. Covers open and closed terrariums, best plants, supplies, layering techniques, and creative spring project ideas.
Spring is the perfect season to bring a little nature indoors, and DIY terrariums are one of the most rewarding, beginner-friendly crafts you can try in 2026. Whether you live in a small apartment or a sprawling house, building your own terrarium lets you create a miniature living ecosystem that doubles as stunning home décor.
The best part? You don't need a green thumb. Terrariums are incredibly forgiving, surprisingly affordable, and endlessly customizable. In this complete guide, we'll walk you through everything you need to know to build your first DIY terrarium — from choosing the right container to selecting plants, layering materials, and keeping your creation thriving for months (or even years) to come.
What Exactly Is a Terrarium?
A terrarium is a miniature garden housed inside a glass container. Think of it as a tiny, self-contained ecosystem that brings the beauty of nature right onto your desk, shelf, or windowsill. The concept dates back to the 1840s when botanist Nathaniel Bagshaw Ward accidentally discovered that plants could thrive inside sealed glass cases.
Today, terrariums have evolved into a wildly popular hobby and home décor trend. They range from simple open dishes with a few succulents to elaborate closed globes housing tropical ferns and mosses. No matter the style, the fundamental idea remains the same: a glass vessel, some soil, plants, and a little creativity.
Open vs. Closed Terrariums: Which Should You Build?
Before you gather supplies, you'll need to decide between two main types of terrariums. Each has distinct characteristics that suit different plants and maintenance styles.
Open Terrariums
Open terrariums have no lid or seal. Air circulates freely, which means moisture evaporates more quickly. This makes them ideal for plants that prefer drier conditions, such as succulents, cacti, and air plants.
Best for: Beginners who tend to overwater, dry climates, succulents and cacti lovers.
Pros:- Very low risk of mold or rot
- Minimal maintenance once established
- Wide variety of container options
- Require more frequent watering (every 1–2 weeks)
- Less dramatic "living ecosystem" effect
Closed Terrariums
Closed terrariums feature a lid or stopper that seals the environment. Moisture recycles through a natural water cycle — water evaporates from the soil, condenses on the glass, and drips back down. This self-sustaining loop means you may only need to water a closed terrarium every few months.
Best for: Tropical plant lovers, people who forget to water, anyone who loves the science behind ecosystems.
Pros:- Nearly self-sustaining once balanced
- Creates a lush, humid microclimate
- Fascinating to watch the water cycle in action
- More susceptible to mold if overwatered initially
- Plant selection is more limited (humidity-loving species only)
For your first build, we recommend starting with an open terrarium — it's more forgiving and gives you room to experiment without worrying about humidity balance.
Essential Supplies for Your First DIY Terrarium
One of the reasons terrariums are such a great beginner hobby is that the supplies are simple and affordable. Here's what you'll need:
Glass Container ($5–$40)
Almost any clear glass vessel works. Popular options include:- Mason jars (great for small projects)
- Geometric terrariums (modern and trendy, $15–$35)
- Fishbowls or glass globes
- Apothecary jars with lids (for closed terrariums)
- Wardian cases (traditional style, $25–$40)
Drainage Layer: Pebbles or Gravel ($3–$8)
Since most terrarium containers don't have drainage holes, a layer of small pebbles at the bottom is essential. River rocks, pea gravel, or decorative stones all work well.
Activated Charcoal ($5–$10)
This is the secret ingredient that keeps your terrarium fresh. Activated charcoal filters the water, prevents bacterial growth, and eliminates odors. You can find it at pet stores (in the aquarium section) or craft supply shops.
Sphagnum Moss or Mesh Screen ($4–$8)
A thin layer of sphagnum moss between the drainage layer and the soil prevents soil from sifting down into the rocks. This keeps your layers clean and your drainage functioning properly.
Potting Soil ($5–$12)
Use the right soil for your chosen plants:- Succulents/cacti: Well-draining cactus mix
- Tropical plants: Standard indoor potting mix with perlite
- Moss terrariums: Peat-based mix or pure sphagnum
Plants ($3–$15 each)
We'll cover the best plant choices in detail in the next section. Budget around $10–$30 for a nice selection of 3–5 small plants.
Decorative Elements ($5–$15)
This is where your creativity shines:- Decorative sand or colored gravel
- Miniature figurines (fairy garden accessories are perfect)
- Driftwood or small branches
- Decorative stones or crystals
- Dried moss in various colors
Total starter budget: $30–$80 depending on container size and how fancy you want to get.
Best Plants for Beginner Terrariums
Choosing the right plants is the single most important decision for a successful terrarium. Here are our top recommendations organized by terrarium type.
Best Plants for Open Terrariums
Succulents are the go-to choice for open builds. Look for small varieties like:- Echeveria — Rosette-shaped, comes in gorgeous colors
- Haworthia — Compact, tolerates lower light
- Sedum — Trailing varieties add beautiful dimension
- Sempervivum (Hens and Chicks) — Hardy and propagates easily
Air plants (Tillandsia) are another excellent option. They don't even need soil — just mist them once a week.
Best Plants for Closed Terrariums
Look for humidity-loving, compact species:- Ferns (Maidenhair, Button fern) — Classic terrarium plants
- Fittonia (Nerve plant) — Stunning patterned leaves in pink, white, and green
- Peperomia — Compact with interesting leaf textures
- Selaginella (Spikemoss) — Lush, carpet-forming ground cover
- Moss varieties — Sheet moss, mood moss, and pillow moss create that enchanted forest look
Plants to Avoid
Stay away from fast-growing plants that will quickly outgrow the container, plants that need full direct sun (the glass can magnify heat), and any plant that's particularly fussy about conditions. If you're drawn to [creative plant-based projects](/articles/polymer-clay-spring-flowers-tutorial-2026/), terrariums pair beautifully with handmade decorative accents.
Step-by-Step: Building Your First Terrarium
Let's put it all together. Follow these steps and you'll have a beautiful DIY terrarium in about 30–45 minutes.
Step 1: Clean Your Container
Wash your glass container thoroughly with warm water and mild soap. Dry it completely. Any residue or contaminants can encourage mold growth later, so start clean.
Step 2: Add the Drainage Layer
Pour a 1–2 inch layer of pebbles or gravel into the bottom of your container. For larger containers, go closer to 2 inches. This layer is non-negotiable — without proper drainage, standing water will rot your plant roots.
Step 3: Add Activated Charcoal
Sprinkle a thin layer (about ¼ to ½ inch) of activated charcoal over the pebbles. This acts as a natural filter and is especially important for closed terrariums where air doesn't circulate.
Step 4: Place the Moss Barrier
Lay a thin sheet of sphagnum moss or landscape fabric over the charcoal layer. This keeps your soil and drainage layers separate, which is essential for long-term terrarium health.
Step 5: Add Potting Soil
Add 2–3 inches of appropriate potting soil. Create a gently sloped or uneven surface rather than a flat layer — this adds visual depth and makes your finished terrarium look more natural and interesting.
Step 6: Plan Your Layout
Before planting, arrange your plants (still in their nursery pots) on top of the soil to experiment with placement. Follow the classic design rule: place taller plants toward the back or center, and shorter or trailing plants near the edges.
Step 7: Plant
Gently remove each plant from its pot, loosen the root ball slightly, and dig a small hole in the soil. Place the plant in, press soil gently around the roots, and move to the next one. Leave a little space between plants — they'll fill in over time.
Step 8: Add Decorative Elements
Now for the fun part! Add your decorative touches:- Top-dress exposed soil with decorative pebbles, sand, or dried moss
- Place miniature figurines, crystals, or driftwood
- Create pathways with fine sand
- Add small accent stones
This is where your terrarium transforms from a simple plant arrangement to a miniature world. If you enjoy the decorative side of crafting, you might also love creating custom accents with [resin art](/articles/resin-art-beginners-guide-2026/) — tiny resin pieces make fantastic terrarium decorations.
Step 9: Water Carefully
Use a spray bottle or small watering can to moisten the soil. The key word here is moist, not soaking. For open terrariums, water until the soil is damp but not waterlogged. For closed builds, use even less water — you can always add more, but removing excess is tricky.
Step 10: Find the Perfect Spot
Place your terrarium in bright, indirect light. Avoid direct sunlight, which can turn your glass container into a greenhouse oven and cook your plants. A north-facing window, a well-lit desk, or a spot a few feet from a sunny window are all ideal locations.
Creative Spring Terrarium Project Ideas
Now that you know the basics, here are five inspiring terrarium projects perfect for spring 2026.
1. The Enchanted Fairy Garden
Use a wide, shallow bowl with an open top. Plant a mix of small ferns and moss, add a winding sand pathway, and place miniature fairy garden accessories like tiny benches, bridges, and lanterns. This is a fantastic project for crafting with kids.
2. The Desert Landscape
Fill a geometric glass container with sandy cactus mix, plant 3–4 small succulents, and add decorative sand layers in different colors along the sides. Top with fine white sand and tiny decorative stones for a minimalist desert scene.
3. The Moss Terrarium (Closed)
Use a jar with a lid and create a lush all-moss landscape. Combine sheet moss, mood moss, and pillow moss for textural variety. Add a small piece of driftwood and a tiny fern as a focal point. Once sealed, this one practically takes care of itself.
4. The Hanging Globe Terrarium
Purchase small glass globes with hooks ($8–$15 each) and create a set of three or four to hang near a window. Use air plants since these globes are open at the bottom, and add a thin layer of decorative sand. Stunning as a set.
5. The Spring Zen Garden
Combine terrarium-building with the meditative art of zen gardens. Use a medium-sized open container, create a planted section on one side, and fill the other side with fine sand. Include a miniature rake and smooth stones. Perfect for your desk or workspace. For more meditative craft ideas that pair well with terrariums, check out our guide to [watercolor painting](/articles/watercolor-painting-beginners-guide-2026/).
Terrarium Care and Maintenance
Once your terrarium is built, ongoing care is simple. Here's how to keep it thriving.
Watering Schedule
- Open terrariums: Check weekly. Water when the top inch of soil feels dry. Succulents prefer a deep watering every 1–2 weeks rather than frequent light sprays.
- Closed terrariums: Check monthly. The glass should have light condensation but not be dripping. If it's fogged up constantly, crack the lid for a day to let excess moisture escape.
Light Requirements
Bright, indirect light is the golden rule for nearly all terrariums. If you notice plants stretching or leaning dramatically toward the light source, they need more brightness. If leaves are scorching or turning brown, move the terrarium farther from the window.
Pruning and Maintenance
Trim plants when they start touching the glass walls or crowding their neighbors. Regular pruning encourages bushier growth and prevents any single plant from taking over. Remove any dead leaves promptly to prevent mold.
Troubleshooting Common Problems
Mold or fungus: Usually caused by overwatering or poor air circulation. Remove the affected area, reduce watering, and for closed terrariums, leave the lid off for 24–48 hours.
Yellow leaves: Often a sign of overwatering. Let the soil dry out before the next watering.
Foggy glass (closed terrariums): A little condensation is normal and healthy. Excessive fogging means too much moisture — open the lid for a few hours.
Leggy, stretched plants: Not enough light. Move to a brighter location, but still avoid direct sun.
Tips for Taking Your Terrariums to the Next Level
Once you've mastered the basics, here are some ways to elevate your terrarium game.
Experiment with Hardscape
"Hardscaping" refers to the non-plant elements in your design — rocks, wood, and structural elements. Interesting pieces of driftwood, dramatic stone formations, or carefully placed branches can transform a simple terrarium into a captivating landscape.
Try LED Grow Lights
If you don't have a spot with great natural light, small LED grow lights ($15–$30) designed for indoor plants work wonderfully. Many come in clip-on or USB-powered designs that are perfect for desk terrariums.
Create Themed Terrariums
Let your imagination run wild. Build a prehistoric dinosaur landscape with small figurines and ferns. Create a tiny beach scene with sand and seashells. Design a holiday-themed terrarium that changes with the seasons. The creative possibilities are what make this hobby so addictive.
Make It a Social Craft
Terrarium-building parties are becoming hugely popular in 2026. Set up a supply station with various containers, plants, and decorative elements, and let everyone build their own. It's a wonderful activity for birthday parties, bridal showers, or casual craft nights with friends.
Combine with Other Crafts
Terrariums pair beautifully with other creative hobbies. Try creating [handmade macramé](/articles/macrame-for-beginners-complete-guide/) plant hangers to display hanging terrariums, or craft [custom wire-wrapped](/articles/wire-wrapping-jewelry-techniques/) holders for glass globes.
Where to Source Terrarium Supplies
You don't need to visit a specialty shop to get started. Here's where to find everything:
- Glass containers: Thrift stores are goldmines for unique vessels ($1–$5). Also check dollar stores, craft stores like Michaels or Hobby Lobby, and online retailers.
- Plants: Local garden centers and nurseries typically have the best selection and healthiest plants. Many grocery stores carry small succulents for $3–$5.
- Soil, charcoal, and pebbles: Hardware stores, pet stores (aquarium section for charcoal and gravel), and garden centers.
- Decorative items: Craft stores, dollar stores, and online shops like Etsy for unique miniatures.
- Complete kits: If you want everything in one box, terrarium starter kits ($25–$50) are widely available and make great gifts.
Terrariums as Gifts and Décor
One of the most delightful aspects of the terrarium hobby is that your creations make incredible gifts. A handmade terrarium is personal, beautiful, and alive — far more meaningful than something store-bought.
Spring is an especially perfect time to gift terrariums for birthdays, Mother's Day, Teacher Appreciation Week, or housewarming celebrations. Build a few extras whenever you're crafting, and you'll always have a thoughtful gift ready.
As home décor, terrariums fit virtually any style. Geometric glass containers complement modern and minimalist interiors. Vintage apothecary jars suit traditional or eclectic spaces. Even a simple mason jar terrarium adds a fresh, natural touch to any room.
Frequently Asked Questions About DIY Terrariums
How long do terrariums last?
With proper care, terrariums can last for years — even decades. Closed terrariums are especially long-lived because their self-sustaining water cycle means they need very little intervention. The famous David Latimer terrarium in England has been sealed since 1972 and is still thriving!
Can I use tap water for my terrarium?
Yes, but filtered or distilled water is better, especially for closed terrariums. Tap water can contain minerals and chlorine that build up over time and leave white deposits on the glass.
Do terrariums attract bugs?
A properly built terrarium rarely has pest problems. However, small gnats can sometimes appear if the soil stays too wet. Let the soil dry slightly between waterings and add a thin layer of decorative sand on top to discourage gnats from laying eggs.
Can I build a terrarium with kids?
Absolutely! Terrariums are one of the best family-friendly craft projects. Kids love choosing their own plants, adding miniature figurines, and watching their little ecosystem grow over time. Just supervise younger children around glass containers, or opt for a sturdy plastic container instead.
How much sunlight does a terrarium need?
Most terrariums thrive with 4–6 hours of bright, indirect light per day. Avoid placing them in direct sunlight, as the glass magnifies heat and can quickly damage or kill plants. If natural light is limited, a small grow light is an easy solution.
Ready to Build Your First Terrarium?
Building a DIY terrarium is one of those rare hobbies that's relaxing, creative, affordable, and produces a result you'll enjoy every single day. Whether you start with a simple succulent arrangement or dive straight into a lush closed moss garden, the process of creating a miniature world is deeply satisfying.
Gather your supplies, pick your plants, and set aside an afternoon this spring to give it a try. We think you'll be hooked after your very first build. And once you've caught the terrarium bug, there's a whole universe of styles, techniques, and creative combinations to explore.
Happy crafting, and welcome to the wonderful world of terrariums! 🌿