Best Terrarium Containers for Closed Eco Systems | DIY Tips & Ideas

Choosing the right terrarium container for closed eco systems is crucial for creating a self-sustaining ecosystem that requires no watering or opening. This guide covers:

• Best Material for Terrarium Containers

• Effective Sealing Options

• Light Requirements

• Checking for Leakage

• Size Considerations

• Unique Terrarium Containers

• Terrarium Container Ideas

• How to Choose Terrarium Containers for Plants

• Where to Buy Terrarium Containers

• Bonus is at the end

Whether you’re a beginner or an experienced terrarium enthusiast, these tips will help you select the perfect container for your miniature garden. Use your terrarium containers to create unique and beautiful indoor gardens.

Best Material for Terrarium Containers

The ideal material for a terrarium container is glass. Apothecary jars are a popular choice for terrarium containers due to their glass material and variety of sizes and styles. While plastic containers can work, glass is preferable due to its durability and clarity. Glass containers provide a clear view and maintain the moisture levels necessary for a thriving terrarium.

This terrarium has been sealed for more than 1.5 years. It remains healthy inside the glass container sealed with rubber and wood.

Effective Sealing Options

Avoid using wood for sealing as it can introduce mold and deteriorate over time. Cork is a better, mold-resistant choice, providing a tight seal without compromising the ecosystem. Rubber or sponge can also be used to seal the terrarium opening effectively.

Cork or rubber seal are effective in most cases. It rarely gets moldy; I've never had a problem as an expert terrarium maker.

Light Requirements

Closed terrariums need adequate light to support plant growth, so choose a jar that allows light to pass through without obstruction. Clear glass is ideal for growth, ensuring that your plants receive the necessary light. Colored glass, while aesthetically pleasing, might hinder light penetration and affect plant health.

Pro Tip: Color of Glass

For a standard growing terrarium, clear glass is ideal. In my experience, while colored glass containers can work, they may not be as effective. I used a colored glass container, and although my terrarium didn't die, it also didn't thrive. Feel free to experiment with colored glass, but be aware that it might impact the growth of your plants.

This 1.5 year old terrarium doesn't grow like others because colored glass filters necessary light for plant growth

Checking for Leakage

Test the container for leaks by filling it with water before use. A leaking container indicates it's not airtight, making it unsuitable for a closed terrarium. Ensuring your container is leak-proof is essential for maintaining a stable environment inside.

Size Considerations

While size does matter, it’s more about ease of use. Different sizes of containers can accommodate various types of foliage plants, making it easier to create a beautiful arrangement. Smaller jars are trickier to work with due to limited space for arranging plants and decorations. Larger containers are more forgiving, offering ample space for plant growth and adjustments. Medium-sized containers are great for beginners, balancing ease of use and aesthetic appeal.

Unique Terrarium Containers

Consider unique containers like terrarium lamps for dual functionality as decoration. Open terrariums are also a great option for tropical plants and provide endless possibilities for plant arrangements. These creative options can add a unique touch to your home décor while housing a thriving ecosystem. The versatility of terrarium lamps makes them an excellent choice for both functionality and style.

Lamp terrarium. You can buy the lamp base from Target. 

I collect unique glass terrarium containers from Goodwill, which is great for second hand original glass containers and other stores like Ross, Marshalls, and TjMax.

Terrarium Container Ideas

• Mason Jars: Easy to find and great for small plants.

• Wardian Cases: Classic choice with historical appeal.

• Demijohns: Large and decorative, perfect for creating a striking centerpiece.

• Geometric Terrariums: Modern and stylish, ideal for succulents and air plants.

• Fish Tanks: Provide ample space for larger terrariums.

• Moss Arrangements: Use moss to complement other plants and decorations like pine cones, rocks, stones, and shells.

Bonus: Here is our fish tank terrarium :) 

How to Choose Terrarium Containers for Plants

1. Material: Choose glass for clarity and moisture retention.

2. Sealing: Ensure a tight seal with cork or rubber.

3. Light: Opt for clear glass to allow maximum light penetration.

4. Leakage: Test for leaks to ensure airtightness.

5. Size: Start with medium-sized containers for ease of use.

6. Aesthetics: Consider unique designs that complement your home décor.

7. Green Thumb: Even if you don't have a green thumb, you can still enjoy and cultivate plants using terrarium containers.

Using Wine Bottles

White wine bottles, with their clear glass, can be used as terrarium jars, offering an elegant and stylish option. However, red wine bottles are more challenging due to their darker glass, which can limit light penetration. If you prefer using wine bottles, opt for those with clear glass for the best results.

Where to Buy Terrarium Containers

For high-quality, airtight glass terrariums designed for closed DIY projects, check out the selection at KraftStories. Their containers are perfect for creating beautiful and sustainable terrariums. Check out our containers

Pro Tips

• Always choose clear glass for standard growing terrariums to ensure optimal light conditions.

• Experiment with different container shapes and sizes to find what works best for your plants and space.

• Regularly check for any signs of leakage or mold to maintain a healthy terrarium environment.

By considering these factors—material, sealing, light, leakage, and size—you can select the best terrarium container for your closed terrarium project, ensuring a thriving and beautiful miniature ecosystem in your home.