Soil Ninja Premium Terrarium Compost | 2.5L

Soil Ninja Premium Terrarium Compost is a specialist, peat-free soil mix designed for creating beautiful, healthy terrariums. Made from seven carefully selected ingredients, including coco coir, bark, activated charcoal and worm castings, it provides the perfect balance of moisture retention, drainage and aeration for tropical plants growing in glass containers.

Suitable for both open and closed terrariums, this ready-to-use blend helps maintain a healthy growing environment, even in the humid conditions of a miniature indoor ecosystem. Whether you're planting a sealed glass jar or creating your own tropical landscape, Soil Ninja takes the guesswork out of choosing the right compost.

Why choose Soil Ninja Terrarium Compost?

• Specially formulated for terrariums: Provides the drainage, moisture retention and structure needed for plants growing in glass containers.
• Balanced moisture retention: Coco coir helps maintain consistent moisture without the substrate becoming overly dense or waterlogged.
• Activated charcoal and biochar: Porous carbon-based ingredients that help adsorb certain impurities and support a balanced growing environment.
• Natural plant nutrition: Worm castings provide organic matter, beneficial microorganisms and nutrients to support early growth.
• Improved drainage and aeration: Bark and sand help maintain structure, allowing water and air to move through the mix.
• Supports beneficial soil life: A biologically active blend that encourages the microorganisms and tiny organisms found in healthy terrarium ecosystems.
• Peat-free and ready to use: No need to purchase or measure individual ingredients.

What's in the mix?

Soil Ninja Premium Terrarium Blend contains seven ingredients, each chosen for its particular benefits:

• Coco Coir: Retains and distributes moisture.
• Bark: Adds structure, aeration and organic matter.
• Sand: Helps maintain drainage and prevents the mix becoming muddy.
• Zeolite: Helps retain and exchange nutrients within the substrate.
• Worm Castings: Provide natural nutrients and beneficial microorganisms.
• Activated Charcoal: Adsorbs certain dissolved impurities.
• Biochar: Contributes to soil structure and nutrient retention.

Which plants is it suitable for?

This terrarium compost is ideal for small tropical plants that appreciate humidity and consistently lightly moist soil. Excellent choices include Fittonia (Nerve Plants), miniature ferns, Selaginella, tropical mosses, small-leaved Begonias and Biophytum sensitivum.

For dry terrariums containing cacti or succulents, we recommend using a specialist cactus and succulent compost instead.

Looking for plants to complete your display? Explore our terrarium plants.

How to use terrarium compost

1. Create a drainage layer: Add a layer of gravel or clay pebbles to the bottom of your glass container, with a suitable mesh barrier if needed.
2. Add your compost: Pour in enough Soil Ninja Terrarium Blend to accommodate your plants' roots.
3. Plant your terrarium: Arrange your chosen plants, gently firming the compost around their roots. Finish with decorative moss or stones if desired.
4. Water sparingly: Lightly moisten the compost without saturating it. Closed terrariums retain moisture and generally require much less frequent watering than open ones.

Our tip: Position your terrarium in bright, indirect light and avoid direct sunshine, which can quickly overheat a glass container. Remember that a drainage layer collects excess water but doesn't remove it, so careful watering is essential.

Product details

• Brand: Soil Ninja
• Product: Premium Terrarium Blend
• Suitable for: Open and closed tropical terrariums
• Ingredients: Coco coir, bark, sand, zeolite, worm castings, activated charcoal and biochar
• Properties: Peat-free, nutrient-enriched and biologically active
• Bag size: 2.5 litres

Please note: As this is a biologically active growing medium, naturally occurring microorganisms and small, beneficial soil organisms may be present.

Discover more specialist growing media in our Soil Ninja collection.