paghat wrote:
In article .com,
"Christopher Green" wrote:
[snip]
[Briefly, zone 19 is a zone with air drainage (thus less frost than
adjacent zone 18) and little or no marine influence (thus hotter
and
less humid than adjacent zone 20). It is an ideal zone for citrus
and
other frost-sensitive heat-dependent plantings, more challenging
for
drought-sensitive things like evergreen azaleas.]

Sounds like a good zone to build a semi-shading pergola from which to
hang
orchid cacti.

Indeed. Also, lathhouses such as the epiphyllum house at the San Diego
Wild Animal Park work very well in inland Southern California.
--
Chris Green