Senna, A.K.A. jai leaf, catharsis
leaf and bamboos leaf are derived from the small leaves of
narrow-leaved senna or spiky senna of legume. It takes only **5
months from sowing to flowering and fruiting. The number of days
with the average temperature below *0℃ suitable for growth should
be ******0d, and the accumulated temperature during this period
should not be less than ********0℃.
