Marin County yaive yavhurirwa zero yekufa kamwe kamwe muoki, saka zvakangokodzera kuti Marin arikutungamira nzira mukupedza hutachiona hunokonzera chirwere chaparadza masango emuoki muCalifornia neOregon. Masayendisiti kuNational Ornamental Research Site yemakore matatu pa Dominican University muSan Rafael akafumura tekinoroji "yegirinhi" yavakagadzira vachishandisa yakajairwa kushambadzira steamer kupisa ivhu kusvika 122 madhigirii, kuuraya kamwe kamwe oak rufu pathogen. Ramba uchiverenga chinyorwa pano.
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