Terrarium, Vivarium and Mossarium Potting Mix Soil by Highland Moss
From: £4.00
The Highland Moss Terrarium Potting Mix is a handmade blend of high-quality ingredients that are specially formulated for terrariums. This premium mix is perfect for creating a base for a lush, healthy, and vibrant terrarium environment.
Suitable for open and closed terrariums, mossariums, moss bowls and kokedama.
The mix includes a combination of our fresh, hand-picked sphagnum moss with other ingredients to create ideal drainage, water retention and humidity inside your terrarium to ensure optimal plant growth.Make sure you have everything you need
Terrarium Checklist
Materials you need to create a terrarium:
- Terrarium Soil: A specialist blend that is tailored for humidity-loving plants
- Sphagnum Moss: Helps with water retention and improves drainage
- Activated Charcoal: To prevent mould and provide an additional layer of filtration
- Drainage layer: Stones or clay pebbles for added drainage
- Selection of Humidity-loving plants: A variety of plants that thrive in high-humidity environments
- Decorative Stones: To add a decorative touch around your plants
- Cushion or Sheet Moss: To add a natural touch around your plants
- Additional decorations: Use crystals, favourite ornaments, pieces of wood, bark or anything else you want
- Glass container: can be closed or opened, the best is made of clear glass
- Springtails: Make your terrarium a bio-active thriving environment with those little helpers
- Tools: Help you create a beautiful terrarium and maintain it later
- Mister: Delicately spray a gentle mist of water, ensuring your plants receive the moisture they need to thrive
IMPORTANT
Please always make sure to use a good quality, suitable growing medium in your terrarium as it plays a crucial role in the overall health and growth of plants. Poor soil or not suitable for terrarium soil can lead to poor drainage, waterlogging, and poor nutrient uptake and result in weak & unhealthy ecosystems. Good quality soil ensures that your plants and moss have the proper environment to thrive, promoting healthy growth and long-lasting beauty in your terrariums.
Sizes:
0.5L – Suitable for medium terrariums (for example 25cm height & 16cm base).
3L – Suitable for extra large terrariums or a few smaller ones.
15L – Ideal for multiple terrariums or family & kids workshops
Please note that in an effort to minimize packaging and waste in our shop, we may pack larger quantities of our products including soil, into larger bags. For example, if you order 2 bags of 0.5l, you may receive one bag with 1l of the product. This is to reduce the amount of packaging and waste and be more eco-friendly. If you have any concerns or special requests regarding the packaging of your order, please contact us before placing your order. We are committed to being environmentally responsible and appreciate your understanding. The terrarium’s growing medium is packaged in ziplock bags that can be stored for a long time if not used. Keep them in a cool, dark place.
Need extra help
If you prefer a super easy way to start with your terrarium project, we also offer large, eco-glass terrarium kits that include everything you need to create a beautiful terrarium, from the closed container with a cork lid to the soil, moss, and plants. Our website also has an article on how to make a terrarium with step-by-step instructions, helpful advice, and answers to frequently asked questions to help you get started.
- What size of the potting mix should I choose for a medium-sized terrarium?
- The 0.5L size is suitable for medium terrariums, typically around 25cm in height and 16cm at the base. This amount provides adequate soil for establishing a healthy, thriving ecosystem.
- Is this potting mix suitable for both open and closed terrarium environments?
- Yes, this mix is expertly blended to support plant growth in both open and closed terrariums. It helps maintain the necessary moisture and humidity levels, making it versatile for different terrarium types.
- How should I store any unused potting mix to keep it fresh?
- Keep any unused soil in its original ziplock packaging and store it in a cool, dark place. This will help maintain its quality and ensure it remains usable for future projects.
5 star | 96% | |
4 star | 3% | |
3 star | 1% | |
2 star | 0% | |
1 star | 0% |

Free Care Guide With Every Purchase
Scan the plant pot QR for instant access to our care guide for your plant. No hassle, no stress, just healthy and happy plants.
5* service as always, messages replied to promptly with information I needed.
Super speedy dispatch and delivery
Have ordered online for both in-store and delivery and also been into the shop, always been a straight forward experience. Delivery was really well packaged, marked as fragile and live plants on it.
It was an instore purchase
Fast delivery, the plant was perfectly secure in the package. I was so impressed that I have already placed a second order! Definitely recommend this small business 😊