Cannas are native to tropical regions like Malaysia and South America. Cannas live exuberantly in the really hot sun and heavy rain partly due to its having soft and succulent stems requiring lots of water to keep the stems erect throughout the day. They are planted for their bright and large coloured petalled flowers that are a wonder if planted in big masses. However it is very important to remove spent flowers or stems as they might appear messy and not pleasing to the eyes. Being perennials they don't last too long probably 1-3 years with intensive care. Thus planting beds need to be refurbished with new manure and retilled to achieve best results.
The above shows two views of the central median with cannas as the center of attraction. Seen above are two other species that provide shirting to the canna beds. Firstly the golden leaves of the Golden Dewdrop ( Duranta repens) and the red coloured leaves of the Bloodleaf ( Iresine herbstii) both of which are low maintenance plants and suitable for open sunny locations and a survivor to heavy pruning.