Oklahoma City, OK (Zone 7a) | December 2004 | neutral
Prefers a moderately rich soil that is moist and well drained. Fairly easy to maintain, though. Plant in sun but away from strong winds...Read More. Dead head regularly to prolong flowering and divide every 2- to 3-years.
Prefers a moderately rich soil that is moist and well drained. Fairly easy to maintain, though. Plant in sun but away from strong winds...Read More