The Common Rue Ruta graveolens is a native of Southern Europe which has naturalised itself in India. It is calle Nagadali here , as it is believed to deter snakes from entering the garden. Most gardeners grow it at the entrance of their gardens .But I have seen a black cobra merrily wending its way through a maze of Rue in my neighbour's house!
The Rue has an unpleasant oily smell, but its leaves are an unusual blue-green. Its lime yellow flowers bloom in summer. It was used in European cooking before the 20th century, but now tastes have changed. Its leaves and oil are used in Ayurveda for curing chest related diseases and Arthritis.