plants that can grow in a closed jar
Closed terrariums are humid environments and the plants used in them should be suited to these conditions. Mosses are commonly used in terrariums as ground cover because they love moisture, don't need much light and don't have roots that take up space in the soil.lants to Avoid. Succulents and semi-succulents will eventually rot in closed terrariums, because they require so little moisture and a closed terrarium remains humid. Succulents grow better in open terrariums or dish gardens.