Terrariums are small-scale gardens grown in enclosed glass that allows sunlight to enter but prevents moisture from escaping. High humidity levels promote lush, green foliage and reduce the need for watering. The types of plants chosen determine the success of the terrarium. Small tropical or semi-tropical plants are well suited as terrarium plants.
Pink Polka Dot Plant
The pink polka dot plant with its splash of pastel-pink spots against its rich, green foliage makes an excellent terrarium plant. Not only does it thrive in closed-container terrariums, it adds color and dimension to any grouping. This little plant grows to 12 inches or more, but can be controlled with pinching to remain short and compact. Polka dot plant prefers bright light and warm temperatures.
Gold Dust Plant
The gold dust plant, named for its speckled green and gold foliage adds a splash of color when planted with less flashy plants. Growing to a height of 3 to 6 inches, this plant is ideal as either a miniature or medium-sized plant paired with larger upright plants. Its slow growing nature assists in maintaining size. It prefers warm temperatures and medium light.
Add heart-leafed philodendron for height as this plant grows over 12 inches. Its glossy green foliage provides a striking contrast with smaller plants and enhances the color of delicate blooms from flowering plants. It prefers medium light and warm temperatures.
Spider plants provide dramatic contrast as their green and white striped foliage cascades downward giving the illusion of a fountain in the midst of other tropical plants. Choose a 3- to 6-inch plant paired with a taller philodendron surrounded by miniature plants to create a focal point and to add depth to your miniature garden. Plantlets are produced on runners. Spider plant prefers medium light and warm temperatures.
Prayer plants provide dense foliage and subtle color to terrariums. Rounded leaves fold up at night earning them they name of prayer plant. Choose a 6- to 12-inch plant to add height to your terrarium. Prayer plants prefer medium light and warm temperatures.
Baby tears create a mass of foliage with tiny round leaves. These miniature plants reach a height of 6 inches and creep to cover a width of 6 inches. Their moss-like appearance provides excellent ground cover and contrasts well other large-leafed plants. Baby's tears prefer medium light and high-humidity levels.