On Fri, May 18, 2012 at 4:12 PM, Paul Licht <plicht@berkeley.edu> wrote: > Aad > I did a whole series of tests with and without > stratification; this treatment made almost no difference. > I planted fresh B. hirtella and B. distycha seed in a high peat mixture early this winter. I had some light frosts but didn't think anything had grown. I discovered this week that at least a few of the B. hirtella seeds had formed an underground 'tuber' without a single leaf appearing. Randy Linke Monterey Bay Region, zone 9