I had this in zone 4B in almost full shade, wet clay soil. Needless to say, it didn't like this spot. The cool spot made this plant bloom...Read More much later in the season, and became a dieback perennial. Had it been in warmer sunnier spot, it would have turned into a huge bush like my other rose of sharons. My advice for zone 4 is to plant in the sunniest spot in the garden, otherwise it will turn into an ugly dieback perennial.
I had this in zone 4B in almost full shade, wet clay soil. Needless to say, it didn't like this spot. The cool spot made this plant bloom...Read More