[pbs] Growing seed
Paul Licht
plicht at berkeley.edu
Mon Jul 20 14:30:36 EDT 2009
It isn't clear how we can add data to the wonderful compilation of tips
at
http://www.pacificbulbsociety.org/pbswiki/index.php/HowToGrowBulbsFromSeed.
A new entry would be Pycella ignea (a wonderful S. American bulb). I did
some test using warm, cold, light and dark. The best method I found was
to float the shiny flat black seed on water in the refrigerator for
10-14 days. Then warm up and wait a day or two for radicles to form and
then plant on surface. I don't think Dark vs Light matters much, but the
cold pretreatment makes an enormous difference.
Calostemma purpurea did well when planted outside in late fall, early
winter (in Bay area without frost)
--
Paul Licht, Director
Univ. California Botanical Garden
200 Centennial Drive
Berkeley, CA 94720
(510)-643-8999
http://botanicalgarden.berkeley.edu
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