Activated Charcoal For Plants Terrariums 100g

(6 customer reviews)

Activated charcoal (charcoal heated to increase its adsorptive power) is a great house plant soil amendment that can help improve your plants health.

  • perfect to add as a layer for your open or closed terrarium
  • helps prevent mould and bacteria growth
  • improve water circulation and prevent overwatering

Mix the charcoal with soil or add a layer on the bottom to improve drainage, absorb odours, and toxins and prevent moulds as well as balance/lower pH.

It is an excellent absorbent which can absorb fertilizer and release slowly for a longer period providing a healthy dose on a regular basis.

Perfect for mossariums and terrariums too!

100g paper zip bag or plastic container


31 in stock

  • Free wee gift when you spend £50
  • Free UK delivery on orders over £80


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 and Ispodpods: 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

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.


6 reviews for Activated Charcoal For Plants Terrariums 100g

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  2. Verified reviewVerified review - view originalExternal link

    A larger pot than was needed for my small terrarium but good value and will last a long time.

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  3. A larger pot than was needed for my small terrarium but good value and will last a long time.

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  • We carefully wrap every order in as many eco friendly materials as possible
  • Orders take 1 – 2 days processing time to send, orders placed before 1.30pm are usually sent the same day.
  • Delivery is a maximum of £6.95 per order
  • Spend over £80 for free delivery
  • Free collection from our shop in Aberdeen and £3 local delivery available
  • We use Royal Mail tracked 24 delivery service.
  • On rare occassions we may use alternative couriers if necessary.

Q & A

How much Charcoal would you recomend adding to a 3 ltr bag of Terrariaum Soil. Many Thanks Andy Andrew Gould asked on January 23, 2024

Hello ,

Our terrarium potting mix is prepared with activated charcoal and you don’t have to add anymore, but activated charcoal can be used as an additional layer.

Highland Moss Team answered on January 23, 2024 store manager
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