About Arisaema sikokianum

Andy Y.S. Wong asiatica at NNI.COM
Tue May 28 15:40:01 CEST 2002

The Japanese climate is different in many respects from almost all
regions in North America.  One of the critical differences is rainfall
patterns.  Japan has an early summer monsoon, and in many areas, very
little precipitation in winter.  On the Japan sea side, many regions
have many feet of snow through the winter every year.  Another factor is
that spring comes gradually and consistently throughout Japan.  Frost
after plants break dormancy is almost unknown.  Keep in mind that Japan
is an island and that temperatures are milder than you would think
looking at the latitude of Japanese regions.  It is also important to
remember that while Japan is not a very big country, it is very long,
extending over many latitudes.  The same plants are often native over
many zones of latitude, and these regional variants can perform very
differently in cultivation.

In short, the performance of Japanese native plants in the US is very
different from Japan. After more than 60 trips to Japan in all seasons,
many years growing Japanese plants, and many conversations with Japanese
growers, I have learned that their experiences are very interesting but
usually completely irrelevant to cultivating Japanese plants in the US.

In the case of Arisaema sikokianum, I think the two critical issues for
successful cultivation are drainage and protection from late frosts.  If
you manage those factors, success is almost assured.

Barry Yinger

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