More on SOD: It has been found that the Calif. Rose, Rosa gymnocarpa, or CA wood rose, a native rose found in the wild and sold as a garden plant, is a host for SOD. To read more about SOD, go to
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there are links to other sources such as CDFA (CA Dept of Food & Agri) APHIS and UC Davis (You could spend all day reading all that info!!)
Emilie NorCal