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Pilea peperomioides
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Tradescantia zebrina · Commelinaceae
Tradescantia zebrina is a fast-growing, trailing perennial native to Mexico and Central America, widely cultivated as a houseplant for its striking striped foliage. The leaves are deep green to purple with two silvery longitudinal stripes on the upper surface and a rich magenta-purple underside. It is one of the most vigorous and forgiving houseplants available, making it a popular choice for beginners and experienced growers alike.
Photo: Ruestz (upload 13:54, 11 January 2008) / CC BY-SA 3.0 via Wikimedia Commons
Tradescantia zebrina performs best in bright, indirect light, which maintains the intensity of its variegated colouring. Insufficient light causes the silver and purple tones to fade, with leaves reverting to a duller, more uniform green. A position near an east- or west-facing window is ideal; direct afternoon sun can scorch the foliage, though a small amount of morning sun is generally tolerated and may enhance colour.
Water thoroughly when the top 2 to 3 cm of compost has dried out, then allow any excess to drain freely. Tradescantia zebrina is susceptible to root rot if left sitting in waterlogged soil, so good drainage is essential. Reduce watering frequency in autumn and winter when growth slows. The plant is moderately drought tolerant for short periods, though prolonged dryness leads to shrivelled leaves and tip dieback.
A well-draining, peat-free general-purpose potting compost is suitable. Adding 20 to 30 per cent perlite or coarse grit improves drainage and reduces the risk of root rot. The plant is not particularly fussy about soil pH but performs best in a slightly acidic to neutral range of approximately 5.5 to 7.0. Avoid heavy or water-retentive mixes.
Apply a balanced, water-soluble fertiliser diluted to half the recommended strength every two to four weeks during the active growing season from spring through to early autumn. Feeding encourages vigorous growth and helps sustain the vivid leaf colouration. Do not feed during winter, as the plant is resting and excess nutrients can accumulate in the soil and cause root damage.
Tradescantia zebrina prefers moderate to high humidity, ideally above 50 per cent. In centrally heated homes with dry air, the leaf tips may brown; misting, placing the pot on a pebble tray with water, or grouping plants together can help raise local humidity. The plant thrives between 15 and 27 degrees C and should not be exposed to temperatures below 10 degrees C. Keep it away from cold draughts and frost at all times.
Repot every one to two years in spring when the roots begin to circle the base of the pot or emerge from the drainage holes. Choose a pot only one size larger, as an oversized container retains excess moisture and increases the risk of root rot. Tradescantia zebrina grows quickly and may need more frequent repotting if kept in warm, bright conditions. Refresh the compost at each repotting to replenish nutrients.
Regular pruning encourages a bushier, more compact habit and prevents the plant from becoming leggy. Pinch out the growing tips frequently by removing the top one to two leaf nodes; this stimulates branching lower down the stems. Cut back any bare, woody stems to a node to encourage fresh growth. Pruning is best carried out in spring or summer, though light tidying can be done at any time of year.
Cut a healthy stem section of 8 to 12 cm just below a node, remove the lower leaves, and place in a glass of water in a bright, warm spot. Roots typically emerge within one to three weeks, after which the cutting can be potted into compost.
Prepare cuttings as above and insert several directly into moist, well-draining potting compost. Keep the compost lightly moist and place in a warm, bright position; rooting generally occurs within two to four weeks. Planting multiple cuttings together creates a fuller pot from the outset.
When repotting a mature, congested plant, the root mass can be gently divided into two or more sections, each with healthy roots and stems attached. Pot each division separately and water in well, keeping the plant out of direct sun for a few days while it establishes.
Native to Mexico, Guatemala, Belize, Honduras, Nicaragua, Costa Rica, Colombia.
The genus name Tradescantia honours John Tradescant the Elder (circa 1570 to 1638) and his son John Tradescant the Younger (1608 to 1662), English naturalists and gardeners who served as royal gardeners to King Charles I and were instrumental in introducing many new plants to Britain. The species epithet zebrina is derived from the Latin 'zebra', referring to the distinctive striped pattern on the leaves, which resembles the markings of a zebra. The former genus name Zebrina, under which this plant was previously classified, carried the same meaning.
Tradescantia zebrina was first formally described by the German botanist Heinrich Wilhelm Schott in 1832, based on specimens from Mexico. It was subsequently placed in its own genus, Zebrina, for much of the 20th century before being reclassified back into Tradescantia following molecular phylogenetic studies. The plant became a popular houseplant in Europe and North America during the mid-20th century, valued for its ease of cultivation and colourful foliage. In its native range across Mexico and Central America, it grows as a sprawling ground cover in moist, shaded habitats. Outside its native range, it has naturalised widely in tropical and subtropical regions and is considered a significant environmental weed in some countries, particularly in Australia.
Foliage displays an unusual mix of green, silver, pink, and red, giving a more complex variegation than the species type
Leaves are more uniformly deep bronze-green with a strongly purple underside and less pronounced silver striping
The standard species form with the characteristic two silver stripes on green-purple leaves and bright magenta undersides