This gorgeous Hibiscus was a gift for Carol when she was in the hospital in 2010 with a heart problem. The plant has grown into a beautiful bush and has these huge flowers on it. They are 8bout ten inches across and just now blossomed out. This one is likely a 'Lord Baltimore' hibiscus.
Here is what Better Homes and Gardens had to say about it - "Hibiscus moscheutos 'Lord Baltimore' bears 10-inch-wide, bright cherry-red flowers on 4-foot stems in midsummer to fall." This description fits to a T.