Oncocyclus iris, was 1936 usda zones
penstemon (Wed, 10 May 2017 16:51:50 PDT)
The people in the iris society concluded they got too much winter rain
here. We average 8" / 200mm rain per annum, 60% during the summer monsoon
July-September.
If they were species from the Levant, then most likely the monsoon did them in.
The average rainfall in Jerusalem, say, November through March, is 500 millimeters.
Average precipitation in Jerusalem, June through October, fifteen millimeters total, with zero from June through August.
Bob Nold
Denver, Colorado, USA
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