Horticultural Charcoal

Mosser Lee’s Horticultural Charcoal is an essential soil amendment for all plants in pots without drainage holes, including terrariums and dish gardens. Its excellent porosity allows absorption, retention and slow release of water and fertilizers, increasing the nutritional holding capacity of potting soils. Use to retain moisture in plant soil, beautify indoor and outdoor container plants, and improve plant drainage.

  • Eliminates stagnant water in pots
  • Absorbs water impurities
  • Sweetens soils in terrariums and pots without drainage holes
  • Improves soil oxygen levels
  • Increases beneficial microbes in soils
  • Improves soil texture

2.25 Dry Quarts

SKU: ML0810 Category:



Because of its absorptive characteristics, charcoal has been widely used by horticulturists to help potted plants from becoming waterlogged. Over the years, charcoal has become indispensable in potting mixes when plants are placed in pots without drainage holes. Mosser Lee’s Horticultural Charcoal stores excess water (and liquefied fertilizer) and releases it when the roots seek nourishment as the soil dries out and is a must have for your Terrarium Needs.

How is Mosser Lee’s Horticultural Charcoal Made?

Mosser Lee Horticultural Charcoal is a non-activated charcoal.  The manufacturing process is similar to other non-activated charcoal processes with burning kilns and sizing screens. The screens help ensure that the pieces are uniform sized. Imported.

Is Horticultural Charcoal the same as Activated Charcoal?

No, activated charcoal is made with gas infused into the burning chamber, which is not done in making horticultural grade charcoal. The activation process allows greater absorption, but at a much higher and unnecessary cost. Activated charcoal is used in many applications including filtering in aquariums.

Horticultural Charcoal for Terrariums

One common way to use our charcoal is for Terrariums. OftenTerrariums are filled with beautiful plants cultivated with patiences and care.  However, your terrarium can turn into a bowl of toxins, bacteria, and rotten roots without the proper filtering layers like Mosser Lee’s Charcoal. Adding filtration and natural sanitization is crucial, so many terrarium owners consider charcoal to be an essential additive. Use our Charcoal and Long-Fibered Sphagnum Moss to achieve optimal balance for your habitat.  Check out our post on How to Create a Terrarium with Sphagnum Moss

What plants require water control with Horticultural Charcoal?

Over-watering can kill a plant more quickly than under-watering. Some plants stress in wet soil or when over-watering could inhibit proper growth. Roots need air and over-watering conditions block the roots from getting the needed air. Waterlogged plants can also become susceptible to certain fungal pathogens. Charcoal in the soil mix should be used with most plant, but especially with:

  • African Violets
  • Orchids
  • Bonsai
  • Succulents
  • Peace Lily
  • Ficus
  • Money Trees

Safety Data Sheet -Charcoal

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