Re: Spring has sprung!
>How did you get frost in USDA Zone 10b/11? Was your
>winter more severe than normal?
>-Jason D in San Fran
>Zone 10a (at my house)
This is an interesting question, Jason. It points to the
inadequacies of the USDA zone system. As you no doubt know, San
Diego County (and all of California) is repleat with microclimates,
and mine is one of the odd ones. I am about 3 miles inland from the
beach, along the estuary and at the bottom of a river valley. All of
the cold air in this valley rolls downhill and lands in my yard (and
those of my immediate neighbors), so we typically get a couple of
frosty nights each year -- even though homes half a block up (and
correspondingly ten or twenty feet higher in elevation) get none. I
wish I had had a weather station to keep track this year as the frost
persisted night after night for several weeks. Even neighbors who
had never before had any freeze reported that they had freezes this
winter.
Nan
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Nan Sterman
San Diego County California
Sunset zone 24, USDA hardiness zone 10b or 11
