Persian shield

Strobilanthes dyerianus

Tropical Burmese (Myanmar) perennial with striking iridescent metallic purple-and-green leaves marked with silver. Foliage is the entire ornamental point — flowers are insignificant.

Hardiness ratings

Persian shield hardiness across the four zone systems
SystemRatingTemperature rangeHow to read it
USDA hardiness zone Zone 9–11 −6.7 °C to 10 °C Plant tolerates down to this zone
RHS hardiness rating H2 1 °C to 5 °C Plant needs at least this level of cold tolerance
Canadian plant hardiness zone Zone 9 −1 °C and warmer Plant tolerates down to this zone
Australian (ANBG) zone Zone 4–7 0 °C and warmer Plant tolerates down to this zone

Growing notes

  • Native to Myanmar (Burma) — despite the common name has no connection to Persia
  • Tolerates dappled shade — the foliage colour is most intense in part shade rather than full sun
  • Frost-tender — perennial only in zone 9 and warmer, grown as warm-season foliage annual or houseplant elsewhere
  • Pinch out tips for bushy compact growth
  • Not reliably hardy outdoors in Canada — Canadian zone values shown represent the system maximum and do not imply garden cultivation north of the warmest coastal pockets.

Categories

Related plants

Cross-check Persian shield against your zones

Reference

Persian shield on Wikipedia