Full nameTradescantia (Andersoniana Group) ‘Radtrad’.
Name statusAccepted, the valid name for a unique cultivar.

Established with a description by Radler (2014).

Also known as:
OriginsOrigins documented by Radler (2014). Discovered as a seedling among Tradescantia (Andersoniana Group) ‘Little Doll’ plants. Selected and named by William Radler in Greenfield, Wisconsin, USA.
ClassificationLike other hardy garden hybrids, it is now placed in the Andersoniana Group. These hybrids are sometimes mislabelled as Tradescantia virginiana or the invalid botanical hybrid Tradescantia × andersoniana.
Legal protectionPatented in the USA (Radler, 2014).
AvailabilityMass-produced and widely available in the USA, less common elsewhere.


Described by Radler (2014), with reference to the RHS Colour Chart (3rd edition).

Cultivar groupTradescantia Andersoniana Group.
Growth habitMounded and spreading. 45cm high x 60cm spread.
FoliageLeaves about 32cm long and 1cm wide, hairless.
FlowersFlower stalks are about 1.5cm long and 6mm wide, reddish purple (78A).

Buds are about 1cm long and 6mm wide, strong yellow green (144A).

Sepals are strong yellow green (144A) and hairy on the outer surface, strong yellow green (144B) on the inner surface.

Flowers are about 3.5cm across. Petals are strong violet (89C) inside, and strong violet (89D) outside.

Stamen filaments and style are strong violet (89C). Anthers are vivid yellow (14A). Stigma is light yellow green (145C).
ComparisonsCompared to Tradescantia (Andersoniana Group) ‘Little Doll’, it is taller and wider.

Compared to Tradescantia (Andersoniana Group) ‘Blue Stone’, it has more blooms.

Compared to Tradescantia (Andersoniana Group) ‘Concord Grape’, forms larger and more blue flowers.


Radler, W. J. (2014, August 5). Tradescantia plant named ‘Radtrad’ [US plant patent PP24,733 P3]. United States Patent and Trademark Office. Internet Archive link.

Brickell, C. D., Alexander, C., Cubey, J. J., David, J. C., Hoffman, M. H. A., Leslie, A. C., Malécot, V., Jin, X. (2016). International Code of Nomenclature for Cultivated Plants. PDF link.