How to Grow Orchids in a Case

Glass plant terrariums, or Wardian Cases, gained popularity in the mid 1800s as a means to grow plants in less-than-favorable growing conditions. This kind of case creates an enclosed ecosystem with just the right environment for humidity-loving plants like orchids. If you want to grow orchids in a case, try miniature terrestrial orchids, which are easy-to-grow species in this setting.

Small glass terrarium with secure lid (not tightly sealed)
Warm soapy water
Clean towels
Gravel
Sphagnum moss
Hummus potting soil
Miniature terrestrial orchids

Instructions

- 1
  Wash the terrarium inside and out with warm water and soap. Rinse the soap and dry the terrarium.
- 2
  Place a 1-inch layer of gravel or small rocks along the bottom of the terrarium. This helps with water drainage. You can find the gravel or rocks in stores that sell aquarium or reptile pet supplies.
- 3
  Put down a layer of sphagnum moss over the gravel. This helps prevent the soil from mixing with the drainage gravel. You want the gravel separate from the soil to increase the drainage, which is necessary to protect the orchid roots.
- 4
  Add a 2-inch layer of hummus-rich, sterile potting soil. Lawn and garden supply stores have sterilized potting soils available.
- 5
  Remove the miniature terrestrial orchids from the store containers. Lightly brush away the soil from around the roots. Plant the orchids in the soil in the terrarium.
- 6
  Moisten the soil. Do not saturate the soil. Water only when the soil feels dry. The humidity you produce with the enclosed terrarium helps provide sufficient moisture.
- 7
  Close the lid and place the terrarium in a well-lit area where it receives indirect light.
- 8
  Place a small fan near the terrarium. The United States Botanical Garden suggests using a fan to help airflow around the orchids.

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