Is this a weed? Looks like flowers will be purple

My dad is trying to help a friend ID this plant


( photo / image / picture from TheBip's Garden )

 

It is called "flower of an hour" or Hibiscus Trionum. It smells like honey when it opens. Now is when they are just starting to come out.

 

Thanks carolyn! I thought the buds looked familiar, but I couldnt place em