I don't have the flowers to show here as the plant has stopped flowering. And I do not know if the flowers are edible or not but the leaves are. Its a native plant and can easily be found in homes. It is also easily grown through stem cuttings. If I remember correctly, I bought this plant when it was still young in a small pot at a local floral fest.
The most common use of the leaves is to make tea. Nowadays, there's even tea packets sold in local supermarkets. But if you have used the plant in some other ways, please do share your experiences here. I have heard and read on the net about the medicinal values of the leaves - from helping with kidney stone problem to soothing coughs and rheumatic pains - but have no idea how effective they really are.