Hello: A change in thinking. Does the FAO list the whole U.S. as the pest area of Radopholus similis, and the California and Alaska have applied to be not in the Radopholus similis blacklist of Taiwan? But in the regulations there is some pests for geophytes which only occur in California, but not the much of other states. Such as Rhizoglyphus echinopus: only in California and Texas. (It in the limited not prohibited list in Taiwan) Best Regards Su-Hong-Taiwan