I have one hibiscus right beside my back steps, don't know the name, but it somehow manages to return every year with no care from me. Then I remembered that my Confederate Rose is a Hibiscus. I trimmed it way back for the first time this year, it was reaching for the sun and was extending out in the way when I mowed. It had gotten pretty large.
Name: Anne Summerville, SC (Zone 8a) Only dead fish go with the flow!
Your pure white double is Confederate Rose too! About 10 years ago I grew 8 from seed and all the flowers on the plant were different from each other. I traded away all but one because It has the most amazingly different coloration I've ever seen on a Confederate Rose - an interesting bi-color .. When the buds start to open it's almost like someone took a paint brush to it on some of them!
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.