I so badly want an Hibiscus. I am growing some Rose of Sharon from seed from a kind DG'r. According to the article the ROS is good to zone 5 while the hardy hibiscus is good to zone 4. So do you think I would be better off with a hardy rather than ROS. Course I will find out when I put the seedlings out. I think I might grow it in a pot for the first year or so, then put it out in the ground when it is more robust.