Best Glass Containers for Terrariums: A Buyer's Guide

The container you choose determines not only how your terrarium looks but how it functions. Size, shape, opening type, and glass quality all affect plant health and maintenance difficulty. This guide helps you match the right container to your terrarium goals.

Container Types

Mason Jars

Best for: Beginners, budget builds, closed tropical terrariums

Pros:

• Inexpensive and widely available
• Airtight seal with standard lids
• Various sizes from mini to large
• Easy to find at thrift stores

Cons:

• Narrow openings make planting difficult
• Utilitarian appearance
• Limited viewing angles

Ideal plants: Moss, small fittonia, mini ferns

Mason jars are perfect for learning. If you make mistakes, you've lost minimal investment.

Apothecary Jars

Best for: Decorative closed terrariums, display pieces

Pros:

• Elegant appearance
• Lid removes completely for easy access
• Wide openings for planting
• Clear glass shows plants well

Cons:

• More expensive than mason jars
• Glass can be thin on cheap versions
• Lid seal may not be perfectly airtight

Ideal plants: Fittonia, peperomia, small ferns, moss

Apothecary jars balance aesthetics with functionality. They're the most popular choice for gift terrariums.

Geometric Terrariums

Best for: Open terrariums, succulents, modern decor

Pros:

• Striking visual design
• Available in many shapes
• Often have openings or no lid
• Work well with air plants

Cons:

• Seams may leak in closed setups
• Angles can create light hot spots
• Harder to clean
• Some shapes waste space

Ideal plants: Succulents, air plants, cacti

The angular designs complement modern interiors but require plants that tolerate lower humidity.

Wardian Cases

Best for: Serious hobbyists, large displays, Victorian aesthetic

Pros:

• Classic terrarium design
• Excellent ventilation control
• Large planting area
• Historical significance

Cons:

• Expensive
• Heavy
• Requires more space
• Can be hard to find quality versions

Ideal plants: Ferns, orchids, larger tropical plants

Wardian cases are investment pieces. They're beautiful but not necessary for beginners.

Fish Bowls and Aquariums

Best for: Large terrariums, woodland scenes, complex ecosystems

Pros:

• Wide openings for easy planting
• Thick, durable glass
• Various sizes readily available
• Flat viewing surface

Cons:

• No lid (need to source separately or leave open)
• Can be heavy
• Less decorative than specialty containers

Ideal plants: Larger ferns, multiple plant varieties, moss landscapes

Fish tanks work well for ambitious projects where you need space to create detailed scenes.

Cloche and Bell Jars

Best for: Display terrariums, single plant features

Pros:

• Elegant presentation
• Easy access (lift off)
• Clear 360-degree viewing
• Various sizes

Cons:

• Need separate base/tray
• Seal depends on base fit
• Top-heavy, can tip
• Limited planting depth

Ideal plants: Single specimen displays, moss mounds

Cloches create museum-quality displays but work better for simpler compositions.

Bottles and Demijohns

Best for: Challenge projects, conversation pieces

Pros:

• Unique appearance
• Creates self-sustaining environment
• Long-lasting once established
• Vintage bottles have character

Cons:

• Extremely difficult to plant
• Requires special long tools
• Hard to maintain or adjust
• Limited plant choices

Ideal plants: Moss, selaginella, very small ferns

Bottle gardens are projects for experienced builders. The narrow neck requires patience and specialized techniques.

Size Considerations

Small (Under 1 Quart)

Good for:

• Single plants or moss
• Desktop decorations
• Gifts
• Learning the basics

Challenges:

• Less stable environment
• Quick to dry out if open
• Limited plant choices

Medium (1-3 Quarts)

Good for:

• 2-4 small plants
• Creating simple scenes
• Balance of size and manageability
• Most common terrarium size

Challenges:

• Requires some planning
• Needs proper layering

Large (Over 3 Quarts)

Good for:

• Complex ecosystems
• Multiple plant varieties
• Bioactive setups with springtails
• Statement pieces

Challenges:

• Heavy when planted
• Requires more materials
• Can be overwhelming for beginners

Opening Size Matters

The opening determines how easy your terrarium is to plant and maintain.

Wide Opening (4+ inches)

Advantages:

• Easy to plant and arrange
• Simple maintenance access
• Can use regular tools

Best for: Beginners, anyone who wants to rearrange regularly

Medium Opening (2-4 inches)

Advantages:

• Balances access with seal quality
• Most common configuration
• Adequate for most plants

Best for: Standard terrarium projects

Narrow Opening (Under 2 inches)

Advantages:

• Excellent seal for humidity
• Creates more challenge (if desired)
• Better for fully self-sustaining builds

Best for: Moss-only builds, experienced builders

Glass Quality

Clear vs. Tinted

Clear glass allows maximum light penetration. Tinted or colored glass reduces light and can create color casts that affect plant growth.

Always choose clear glass for best plant health.

Thick vs. Thin

Thicker glass:

• More durable
• Better insulation (more stable temperature)
• Heavier
• More expensive

Thin glass:

• Lighter and cheaper
• More fragile
• Less temperature stability
• More common in decorative containers

For long-term terrariums, thicker glass is worth the investment.

Bubbles and Distortion

Handblown or recycled glass may have bubbles or distortion. These don't affect function but change aesthetics. Some people prefer the character; others want perfect clarity.

Where to Buy

Budget Sources

• Thrift stores (best value)
• Dollar stores (small containers)
• IKEA (clean, modern options)
• Target/Walmart (seasonal)
• Garage sales

Mid-Range

• Amazon (huge selection)
• Etsy (handmade options)
• Craft stores (Michael's, Joann)
• Home goods stores (HomeGoods, TJ Maxx)

Premium

• Specialty terrarium shops
• Antique stores (vintage pieces)
• Artisan glassblowers
• Import shops

Preparing Containers

Before use:

1. Clean thoroughly - Wash with mild soap, rinse completely
2. Check for cracks - Inspect seams and stress points
3. Test seal - If closed terrarium, ensure lid fits
4. Dry completely - Any cleaning moisture should evaporate

Never use containers that previously held chemicals, even if cleaned.

Matching Container to Style

| Terrarium Style | Best Container | Why | |----------------|----------------|-----| | Tropical closed | Apothecary jar | Good seal, easy access | | Desert/succulent | Geometric | Open design, modern look | | Moss garden | Wide jar or cloche | Shows texture well | | Woodland scene | Fish tank | Space for multiple elements | | Gift terrarium | Mason jar | Budget-friendly, easy to transport | | Statement piece | Wardian case | Impressive appearance |

Final Thoughts

Start with what you have. A repurposed jar from your kitchen works fine while you learn. As your skills develop, invest in containers that match your aesthetic preferences and the terrarium styles you enjoy most.

The best container is one you enjoy looking at and can maintain comfortably. Everything else is secondary.