Zones: 5 to 9
Size: To 12" tall and 18" wide
Exposure: Sun, Filtered Sun, Part Shade
Tolerates clay soil.Blue to purple flowers in summer. Spreads by rhizomes. Prefers afternoon shade in hot climates. Not wet or poorly drained soil.
Published in Enum. Pl. Chin. Bor. 55 in 1833.
Native to China.
I purchased a 4" pot from Santa Rosa in June 2013 and planted it in the Five Trees Garden. It performed reasonably well. It disappeared in winter 2014 but started to return in April.