TROPICAL PLANT ENCYCLOPEDIA
Caryopteris xclandonensis
Bluebeard, Blue Spirea, Blue Mist shrubFamily: Lamiaceae
USDA Plant Hardiness Zone Map
Caryopteris xclandonensis likes full sun to part shade and very well-drained soil that is not overly rich.
It's an attractive woody shrub with dark green leaves, dark purplish blue flowers, and a compact habit. Misty blue flowers appear in late summer and early autumn.
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Link to this plant:
https://toptropicals.com/catalog/uid/caryopteris_clandonensis.htm