First frost

First frost(To do) with, that year fall winter, most first it gets off frost, or that frost gets off. With average of observation ever since postwar period, with Asahikawa approximately October 7th, as for Tokyo approximately November 30th. But terrestrial warming recently there is a tendency which becomes slow. The first frost of Tokyo of the winter 1994 of -1995 February 11th, was abnormal slowness.

Furthermore,Crassulacean course succulent、Graptopetalum paraguayenseWith gardening name of the first frost it was cultivated for a long time in Japan.グラプトペタルムReference.

This item "First frost"There is a possibility of becoming reference of something to investigate, but still it begins to write, itemIs.Revision and correctionAnd so on the cooperator doing is sought.