Ornamental sweetpotato plant named 'NCORNSP-021SHJB'

'NCORNSP-021SHJB' is a moderately compact, to compact, non-twining, slightly upright variety producing many short shoots. It is distinguishable from other cultivars by its purple heart shaped leaves that are entire with a cordate base; a moderately compact to compact habit and semi-erect mounding plant architecture. The purple leaves of this plant, short internodes, and the plant architecture are what make 'NCORNSP-021SHJB' unique amongst the current ornamental sweetpotatoes in the marketplace. 'NCORNSP-021SHJB' also exhibits very good vigor and is very well branched. In greenhouse and field trials conducted since 2013, 'NCORNSP-021SHJB' has been shown to be much less vigorous than Ipomoea batatas 'Margarita' and 'Blackie' and is suitable for use as a landscape or containerized plant. The production of flowers by 'NCORNSP-021SHJB' is sporadic under short day conditions.