Leaf plastochrone interval (PL) represents the number of days that plants take to produce a new leaf. The PL of Enhaus acoroides ranged from 21.5 to 30.0 day, with an annual mean of 26.1"0.6 day. PL varied seasonally with a low from October to November 2006 and March to April 2007 and a igh from December 2006 to February 2007.However, there was no correlation between PL and environmental factors