Closed terrariums create a unique environment for plant growth, the transparent walls allow for both heat and light to enter the terrarium. The sealed container combined with the heat entering the terrarium allows for the creation of a small scale water cycle. This happens because moisture from both the soil and plants evaporates in the elevated temperatures inside the terrarium. This water vapour then condenses on the walls of the container, and eventually falls back to the plants and soil below. This contributes to creating an ideal environment for growing plants due to the constant supply of water, thereby preventing the plants from becoming over dry. In addition to this, the light that passes through the transparent material of the terrarium allows for the plants within to photosynthesise, an important aspect of plant growth.
Caroline, Britt, and Mccall: Terrarium Blog Marley Gastrock, Emily Murray , Hayley Feichtinger: Terrarium Blog
