What Plants Go Under a Bell Jar?

Ivy

• While ivy (Hedera spp.) grows well in humid conditions, many are too large for a bell jar. Miniature species such as shamrock ivy (Hedera helix 'Shamrock'), also called cloverleaf ivy, are ideal for growing in confined conditions. The dark green leaves are arranged in three lobes. This ivy grows equally well in sun or shade. Provide a support inside the jar for it to climb on, or shape it into a small topiary for more interest. Shady locations are ideal for gnome ivy (Hedera helix spetchley). Miniature ivy grown under a bell jar will need to be trimmed back occasionally to keep it compact.

Fern

• For those who like ferns but forget to mist them a bell jar is an ideal solution. Maidenhair fern (Adiantum raddianum) and Boston fern (Nephrolepis exaltata) are two species that can be small enough for a bell jar. Also called florist's fern, asparagus fern (asparagus plumosis) with its long, twining stems and small feathery leaves can resemble a small tree. When stems get too large or you wish to use with cut flowers, asparagus fern can be cut down almost to the soil and will grow back.

Polka Dot

• Polka-dot plant (Hypoestes phyllostachya) adds a pop of bright color to your bell jar. Also known as measles plant, freckle face, or flamingo plant, most have vivid pink leaves with spots or streaks of green. 'Carmina' sports red and green leaves, while ‘Wit’ has contrasting green and white. Polk-dot plant grows in a shrub-like habit and can be trimmed and pruned in the same way.

Peperomia

• Unlike many bell jar plants, peperomia (Peperomia spp.) should be allowed to dry out completely between waterings. Most varieties have round leaves, although some varieties have heart- or lance-shaped leaves. Variegated leaves may be green, yellow, white, red or gray. 'Watermelon' has dark green leaves with lighter zones through the center that resemble the colors of a watermelon rind. Plants in a sunny area will have more color than those grown in the shade. ‘Minima’ is an oval-leaved dwarf variety ideal for small bell jars.