Its a nice variety of Hibiscus. We are calling this as 'Mulaku chembarathi'. 'Mulaku' means chilly and chembarathi is Hibiscus. Its Pink and white versions are also charming.
My father's home is at Kuttanadu. There this plant is very common. This is planted as hedges. There were some narrow passages, each side we can see these cute flowers peeping from the bushes. We can sip honey from its centre part. My father's ancestral home had a typical Kerala Architecture and lot of nadan flowers.
During Monsoon this plant will thrive and we will get more flowers.