Any restricted article at the time of importation or offer for importation into the United States shall not be packed in a packing material unless the plants were packed in the packing material immediately prior to shipment; such packing material is free from sand, soil, or earth (except for sand designated below); has not been used previously as packing material or otherwise; and is listed below:
Code of Federal Regulations
[45 FR 31585, May 13, 1980, as amended at 57 FR 43151, Sept. 18, 1992; 60 FR 3078, Jan. 13, 1995; 68 FR 50047, Aug. 20, 2003]