How to Plant Irish Moss in a Terrarium

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Things You'll Need

  • Glass terrarium with lid

  • Sponge

  • Dish soap

  • Gravel

  • Activated charcoal

  • Sphagnum moss

  • Potting soil

Terrariums offer elegant plantscapes and super low-maintenance care. Irish moss makes an attractive terrarium ground cover or a nice selection for mossariums, moss terrariums. Once planted, the Irish moss needs little care. Terrariums that have too much water -- where water stands in the gravel -- should be vented for a couple hours to reduce the liquid level. Those that have too little water -- no condensation occurs -- can be misted with water from a spray bottle.


Step 1

Wash a lidded glass terrarium with soap and water to clean it. Dry the container with a dish towel.

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Step 2

Add a 1- to 2-inch gravel layer on the bottom of the terrarium. This increases drainage.

Step 3

Cover the gravel with a thin layer of activated charcoal, which prevents the terrarium from getting stinky by filtering the air.

Step 4

Add 1/2 to 1 inch of sphagnum moss on top of the charcoal, which acts as a buffer between the dirt and gravel to maintain a clean-looking terrarium.


Step 5

Add 1 inch of potting soil on top of the sphagnum moss.

Step 6

Add water to wet the soil, until the soil is boggy.

Step 7

Place the Irish moss on top of the soil, pressing the moss into the soil. Moss needs a firm bond with the soil, since it lacks true roots.


Step 8

Put the lid on your terrarium. Place your Irish moss terrarium in a location where it receives moderate light. While Irish moss grows in shady locations outdoors, terrarium moss needs sunlight or grow lights.


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