Kani Konna -Cassia fistula – Official flower of Kerala State ( India ).
Vishu (Malayalam:à´µà´¿à´·àµ)- (American VjÃ©shu), (Tamil:à®µà¯€à®·à¯‚) is a new year festival held in the state of Kerala in South India (and adjoining areas of Karnataka and Tamil Nadu). Similar festivals are celebrated in Punjab and Assam, in India, around the first day in the Hindu month of Medam (April â€“ May). This occasion signifies the Sun’s transit to the zodiac Mesha Mesha Raasi as per Indian astrological calculations. Vishu is also considered as the harvest festival of Kerala and thus the importance of this day to all Malayalees regardless of their religion or sect. Similarly the day is celebrated in almost all places in India by the Hindus albeit by different names. In Assam this day is called Bihu, in Punjab Baisakhi (originally Vaishakhi) and in Tamil Nadu Tamil Puthandu or Vishu punyakalam. The word “Vishu” in Sanskrit means “equal”. Therefore Vishu is more probably denoting one of the equinox days.
(description courtesy of http://en.wikipedia.org/wiki/Vishu