Open Tulip Glass Terrarium – Mini Fern Forest
This simple fern and moss terrarium captures the feel of a tiny shaded forest floor. Ferns and moss both naturally enjoy gentle light, steady moisture, and a sheltered environment, making them well suited to an open glass terrarium that can hold some humidity while still allowing airflow.
Because it is more open than a closed bell terrarium, this setup offers a little more breathing room while still creating a calm, lush miniature landscape. It performs especially well indoors in bright shade or soft indirect light, where the fern can stay fresh and the moss can remain soft and green. The result is a natural, understated terrarium with a quiet woodland feel.
Light
Low to medium indirect light
Bright shade is ideal
Avoid direct sun, especially harsh afternoon sun, as it can overheat the glass and dry the planting too quickly
Temperature
Ideal range: 16–24 °C
Tolerable daytime highs: up to 25–26 °C
Important: A gentle drop at night is beneficial, but not essential
Sustained heat above 26 °C can stress the fern and dry the moss faster, so placement away from hot windows, heaters, and electronics is best.
