zebrina

Tradescantia zebrina
Herb
Alternate
Simple
Pink
Variegated
Green
Purple
Discoloured

A succulent trailing herbaceous plant. Its distinctively coloured leaves are silvery green flushed with purple on the upper surface and purple underneath. These leaves have bases that sheath the stems. Its bright pink flowers have three petals.

Common names 
Also known as: zebrina, cockroach grass, inch plant , purple wandering Jew, silver inch plant, striped trad, striped wandering creeper, wandering Jew, zebra plant,
Family 
Commelinaceae
Deciduous 
No
Flowering time 
Year Round
Native/Exotic 
Exotic
Origin 
Mexico
Notifiable 
No
Council declaration 
Class R – Reduce populations
Known distribution 

Widely naturalised in the coastal districts of eastern Australia (i.e. in eastern Queensland and the coastal districts of northern and central New South Wales). Also naturalised on Lord Howe Island and possibly naturalised on Norfolk Island. Naturalised overseas in south-eastern USA (i.e. Louisiana, Florida and Kentucky) and on several Pacific islands (i.e. the Cook Islands, the Galápagos Islands, Fiji, French Polynesia, New Caledonia, Niue, Palau, Western Samoa, Tonga and Hawaii).

Habitat 

A weed of waste areas, disturbed sites, roadsides, urban bushland, riparian vegetation, open woodlands and forests in sub-tropical and warmer temperate regions.

Habit 

A long-lived (i.e. perennial) herbaceous plant with weak, trailing or creeping, stems.

Impact and control methods 

Zebrina (Tradescantia zebrina) is regarded as an environmental weed in Queensland and New South Wales.

Stem and leaves 

The stems readily produce roots (i.e. adventitious roots) at their joints (i.e. nodes). These fleshy (i.e. succulent) branching stems are hairless (i.e. glabrous) and usually tinged with purplish-red. The leaves consist of a short leaf sheath (7-10 mm long), which encloses the stem, and a spreading leaf blade. The leaf blades (3-7 cm long and 1.5 -3 cm wide) are egg-shaped in outline (i.e. ovate) or broadly lance-shaped (i.e. lanceolate) with entire margins and narrow to a point at the tip (i.e. acute or acuminate apex). They are green and/or purplish with broad silvery stripes on the upper surface and darker purple on the undersides. The leaf sheaths are hairy (i.e. ciliate) along their margins and the leaf blades are hairless (i.e. glabrous).

Flowers and fruits 

The flowers are borne in small clusters at the tips of the stems, and are subtended by two leafy bracts. They have three bright pink or purple-magenta petals (10-12 mm long) that are fused at the base into a whitish tube 5-9 mm long with three rounded spreading lobes (about 6 mm long). They also have three smaller sepals and three stamens bearded with purplish hairs. Flowering occurs mainly in spring and summer. The fruit are small capsules containing greyish-brown seeds.

Reproduction and dispersal 

This plant reproduces by seed and also vegetatively via its creeping stems that produce roots at their joints (i.e. stolons).Stem fragments easily break off and may be dispersed by water, vehicles, machinery, in dumped garden waste or in contaminated soil.

Similar species 

Zebrina (Tradescantia zebrina) is relatively similar to trad (Tradescantia fluminensis), native wandering Jew (Commelina diffusa) and hairy wandering Jew (Commelina benghalensis). These species can be distinguished by the following differences: zebrina (Tradescantia zebrina) has variegated purplish leaves that are hairless and somewhat fleshy. Its flowers are bright pink with rounded petals trad (Tradescantia albiflora) has glossy green leaves that are mostly hairless and somewhat fleshy. Its flowers are white with three pointed petals native wandering Jew (Commelina diffusa) has dull green leaves that are hairless and relatively thin. Its flowers are usually bright blue (rarely white) with rounded petals.hairy wandering Jew (Commelina benghalensis) has dull green leaves that are hairy and relatively thin. Its flowers are usually bright blue with rounded petals.

Replacement species 
Commelina diffusa