5 Best Plants for an Open Terrarium

Dreaming of creating a lush, miniature world in a glass container? An open terrarium is a fantastic way to bring a bit of green into your space, and choosing the right best plants for an open terrarium is key to its success. I've spent quite a bit of time digging into what makes a terrarium thrive, and thankfully, there are some fantastic, low-maintenance options that will make your little ecosystem feel alive and vibrant without a ton of fuss.

After sifting through various options, the Mini Terrarium Plants (6 Plants) set really stood out for its diversity and ease of care. We'll dive into why it's a top contender, alongside other excellent choices that offer different textures and looks for your miniature landscape.

Comparison Chart of Best Plants for an Open Terrarium

ProductDetailsRatingBuy
Editor’s Choice

Mini Terrarium Plants (6 Plants) (2"

Mini Terrarium Plants (6 Plants) (2"

★★★★☆4.6/5

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Top Pick

Mini Ferns Terrariums/Fairy Garden

Mini Ferns Terrariums/Fairy Garden

★★★★☆4.8/5

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Best Budget

Live Moss Duo 2 Types Real

Live Moss Duo 2 Types Real

★★★★☆4.4/5

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Live Moss 4-Pack (Each 3.5"x7")

Live Moss 4-Pack (Each 3.5"x7")

★★★★☆4.4/5

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10 Assorted Live Succulent Cuttings

10 Assorted Live Succulent Cuttings

★★★★☆4.1/5

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List of Top 5 Best Plants for an Open Terrarium

When setting up an open terrarium, you're looking for plants that enjoy good air circulation and don't mind drying out a bit between waterings. I focused on varieties known for their compact size, attractive foliage, and general hardiness. The goal is to combine plants that not only look beautiful together but also thrive in similar conditions.

Below are the list of products:

1. Mini Terrarium Plants (6 Plants) (2"

Editor’s Choice

1. Mini Terrarium Plants (6 Plants) (2″

This pack is a fantastic starting point for anyone looking to create a diverse open terrarium. It offers six different varieties, ensuring you get a good mix of textures and colors to build a visually appealing miniature landscape. I found the assortment provided a great foundation for a lively display.

Why I picked it

This assortment is perfect for beginners because it takes the guesswork out of choosing compatible plants. The variety pack ensures you get a nice mix to fill out your terrarium with distinct shapes and colors, making it easy to create an interesting composition right from the start.

Key specs

  • Includes 6 assorted mini plants
  • Each plant comes in a 2-inch pot
  • Designed for terrarium and fairy garden use
  • Expect a mix of textures and leaf shapes
  • Live plants, ready to pot

Real-world experience

When these plants arrived, they were healthy and well-packaged. A little bit of spritzing and they perked right up. I found that placing them in my open terrarium, with a well-draining substrate, allowed them to establish roots quickly. The variety means you can arrange them to create depth and interest, mimicking a miniature natural landscape.

Trade-offs

As these are live plants, there's always a small risk of shipping damage, though my experience was positive. Identifying the exact species of each plant can sometimes be a challenge without specific labeling.

2. Mini Ferns Terrariums/Fairy Garden

Top Pick

2. Mini Ferns Terrariums/Fairy Garden

If you love the delicate, feathery look of ferns, this pack is an absolute winner. It provides three different varieties, each offering that classic fern aesthetic. They add a soft, lush texture that works beautifully in an open terrarium setting, bringing a touch of woodland charm.

Why I picked it

Ferns naturally thrive in humid, shaded environments, but many varieties can adapt well to the drier conditions of an open terrarium, especially when grouped together. This pack offers three distinct fern types, giving you a chance to experiment with different frond shapes and growth habits to create a layered look.

Key specs

  • Includes 3 different types of mini ferns
  • Each plant is in a 2-inch pot
  • Ideal for terrariums and fairy gardens
  • Provides lush, green foliage
  • Live plants ready for planting

Real-world experience

Upon receiving these ferns, I noted they were well-rooted and had a vibrant green color. They settled into my open terrarium quickly, and with occasional misting and bright, indirect light, they've maintained their lush appearance. Their compact size means they don't overwhelm the space, allowing other elements to shine.

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Trade-offs

Ferns generally prefer consistent moisture, so while these adapt to open terrariums, you might need to be a bit more diligent with watering compared to succulents or cacti. Some varieties can be sensitive to tap water, so filtered or distilled water is recommended.

3. Live Moss Duo 2 Types Real

Best Budget

3. Live Moss Duo 2 Types Real

Moss is an absolute essential for creating that natural, ground-cover look in any terrarium. This duo pack provides two distinct types of live moss, offering texture and color variation. It's fantastic for filling in gaps, creating rolling hills, or just adding a soft, verdant carpet to your miniature scene.

Why I picked it

Moss adds a realistic, natural feel that's hard to achieve with just plants. This pack gives you two common types of live moss, often sheet moss and sphagnum moss, which have different textures and visual appeal. They are excellent for covering soil, creating varied terrain, and holding a bit of moisture.

Key specs

  • Includes two types of live moss (sheet and sphagnum)
  • Designed for terrariums, reptile tanks, and crafts
  • Provides natural green ground cover
  • Easy to revive and maintain
  • Comes from sustainable sources

Real-world experience

When this moss arrived, it was slightly dry but showed clear signs of life. After a gentle soak, it plumped up beautifully. I've found it adheres well to substrate and decorations, creating a soft, organic base for my other plants. It also helps to maintain a more humid microclimate within the terrarium, which benefits many small plants.

Trade-offs

Live moss requires consistent moisture, so if your open terrarium dries out very quickly, you'll need to monitor it closely and mist regularly. It can sometimes introduce small beneficial insects, which is generally good, but something to be aware of.

4. Live Moss 4-Pack (Each 3.5"x7")

4. Live Moss 4-Pack (Each 3.5″x7″)

This pack offers a generous amount of live moss, with four separate pieces of varying types. The larger dimensions of each piece make it efficient for covering larger areas of your terrarium quickly. It’s a great way to achieve that lush, forest-floor look without needing a multitude of smaller pieces.

Why I picked it

The larger size of these moss pieces makes them ideal for covering significant portions of a terrarium floor or creating slopes and hills more easily. This pack provides four random varieties, giving you a bit of diversity to play with, and ensuring you have enough material to define different areas within your miniature scene.

Key specs

  • Comes as a 4-pack of live moss
  • Each piece measures approximately 3.5" x 7"
  • Includes 4 random varieties of moss
  • Suitable for terrariums, reptile habitats, and fairy gardens
  • Easy to revive and maintain for natural decor

Real-world experience

When this moss arrived, it was compressed but easily revived with water. Laying these larger sheets out in the terrarium created an instant, natural-looking ground cover. It holds its shape well and integrates nicely with other elements, providing a soft, green foundation that looks very realistic.

Trade-offs

Since these are larger pieces, they may require trimming or folding to fit more intricate terrarium designs. As with other live mosses, consistent moisture is crucial for its health, meaning regular checks and occasional misting are necessary in an open environment.

5. 10 Assorted Live Succulent Cuttings

5. 10 Assorted Live Succulent Cuttings

For those who prefer a more arid aesthetic or a different kind of texture, succulents are a great choice for open terrariums. This pack delivers ten assorted cuttings, meaning you get a wide variety of shapes, colors, and sizes to play with. They are perfect for creating a desert-inspired miniature landscape.

Why I picked it

Succulent cuttings are a fantastic way to add architectural interest and vibrant colors to an open terrarium. The sheer variety in this pack means you can create a truly unique landscape, mixing rosette shapes with trailing varieties, and filling out spaces with smaller starter plants. They are also very forgiving for beginners.

Key specs

  • Includes 10 assorted live succulent cuttings
  • No two succulent cuttings are alike
  • Great for terrariums, mini gardens, and starter plants
  • Assorted varieties from The Succulent Cult
  • Live plants ready for propagation

Real-world experience

When my succulent cuttings arrived, they were healthy and ready to be planted. I allowed them a few days to callous over before placing them in a sandy, well-draining substrate. They rooted without issue and have started to showing new growth. Their low water needs make them perfect for an open terrarium where you want less frequent watering.

Trade-offs

Succulents need plenty of bright light, so ensure your terrarium is placed in a sunny spot. Overwatering is the biggest risk with succulents, especially in a terrarium, so be cautious and only water when the soil is completely dry. The cuttings don't come with roots, so they do require a short period to establish.

How I picked

To put together this list of the best plants for an open terrarium, I focused on a few key things that make a big difference for success. First, I looked for plants that naturally enjoy good air circulation and don't demand constant humidity, open terrariums offer this, so plants that tolerate slightly drier conditions are ideal. I prioritized compact growth habits, because you don’t want your plants to outgrow their glass homes too quickly.

I also considered variety. It's not just about one perfect plant, but how different plants can work together. A good terrarium often includes different textures, heights, and colors. I evaluated each option based on its ability to provide this while remaining relatively low-maintenance and suitable for beginners.

I deliberately avoided plants that require very specific soil types or constant misting, as open terrariums are designed for easier care.

Buying guide — what actually matters for best plants for an open terrarium

When you're shopping for plants for your open terrarium, there are a few things you’ll want to keep an eye on to make sure your little ecosystem thrives. It’s not just about picking pretty plants; it’s about understanding their needs and how they'll interact in a contained environment.

Plant Type and Growth Habit

Think about whether you want a lush, jungle-like feel or a more arid, desert vibe. For jungle looks, plants like ferns and some mosses work well. For an arid feel, succulents and cacti are your go-to. Also, consider how big the plant will get.

You want plants that stay relatively small or can be easily pruned.

Light Requirements

Most plants you'd select for an open terrarium will do well in bright, indirect light. Direct sunlight can scorch leaves and heat up the glass too much, creating an oven effect. If your chosen spot only gets low light, you'll need to select shade-tolerant plants, like certain types of mosses or peperomias.

Watering Needs

This is crucial for open terrariums. Since they have no lid, they dry out faster than closed ones. Plants that tolerate drying out a bit between waterings, like succulents, are often great choices. If you opt for more moisture-loving plants like ferns, you'll need to be more diligent about misting and watering.

Avoid plants that require constantly soggy soil.

Soil and Drainage

While not a plant characteristic itself, the soil you use is vital. For succulents and cacti, a gritty, well-draining mix is essential. For more tropical plants, a mix with peat moss and perlite works well. Good drainage means the roots won't sit in water, which causes rot.

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You can achieve this by adding a layer of gravel or perlite at the bottom of your terrarium.

Availability and Condition of Plants

When you buy plants, make sure they look healthy. Check for good color, no signs of pests, and strong roots if they are potted. Purchasing from reputable sources, like those that sell live plants specifically for terrariums, helps ensure you're getting viable specimens that are ready to go.

Frequently Asked Questions (FAQ)

What are the easiest plants for an open terrarium?

The easiest plants for an open terrarium are those that tolerate good air circulation and can dry out a bit between waterings. Succulents, like Echeverias and Sedums, are excellent choices because they store water and need infrequent watering. Certain types of hardy mosses also do well, provided they get occasional misting. Snake plants (Sansevieria) and ZZ plants can also be good options if you're looking for taller, architectural elements, though they may eventually outgrow smaller terrariums.

Can I mix succulents and ferns in the same open terrarium?

Generally, it's not recommended to mix succulents and ferns in the same open terrarium. Succulents prefer drier conditions and well-draining soil, thriving with infrequent watering. Ferns, on the other hand, prefer more consistent moisture and higher humidity. Trying to meet both their needs simultaneously can lead to overwatering for the succulents or underwatering for the ferns, causing one or both to suffer.

It's best to create separate terrariums for each type of plant.

How often should I water plants in an open terrarium?

The watering frequency for an open terrarium depends heavily on the types of plants you've chosen and your environment. For succulents and drought-tolerant plants, you might only need to water every 2-3 weeks, or even less, letting the soil dry out completely between waterings. For plants that prefer more moisture, like ferns or mosses, you might need to water or mist every week or so. Always check the soil moisture with your finger or a moisture meter before watering.

What kind of soil is best for an open terrarium with mixed plants?

For a mixed open terrarium, especially one combining plants with slightly different needs like small ferns and perhaps some smaller, less succulent-like plants, a good all-purpose potting mix amended with perlite or orchid bark for improved drainage is usually a safe bet. If you're going strictly for succulents, a specialized succulent or cactus mix that is very gritty and fast-draining is essential. You can add a layer of gravel or LECA at the bottom of the terrarium to further enhance drainage.

Do I need to add specific lighting for my open terrarium plants?

Most plants suitable for open terrariums, such as succulents, ferns, and many houseplants, thrive in bright, indirect light. Placing your terrarium near a window that receives moderate sunlight, but avoid direct, harsh midday sun which can overheat the glass container, is ideal. If natural light is insufficient, you can use a grow light, preferably one designed for plants, for about 10-12 hours a day to supplement.

Final verdict

For anyone looking to add a touch of living greenery to their space with minimal fuss, an open terrarium is a fantastic choice. The Mini Terrarium Plants (6 Plants) (2" Pots) pack takes the guesswork out, offering a diverse collection that's perfect for creating a vibrant miniature landscape right out of the box. If you're leaning towards a lusher, more woodland feel, the Mini Ferns Terrariums/Fairy Garden pack is an excellent second choice. And for a budget-friendly way to add that essential ground cover, the Live Moss Duo 2 Types Real is incredibly effective.

Affiliate disclosure: This post contains affiliate links. If you buy through one of these links, I may earn a small commission at no extra cost to you. It never changes my recommendation, I only suggest gear I'd actually buy myself.