Regulated articles, as listed in WAC 16-487-110, other than symptomless carriers listed in WAC 16-487-140, may be permitted entry into the state if the planting stock is accompanied by a certificate issued by the plant protection organization of the state in which the planting stock was grown. At a minimum, the certificate must state that all four of the following requirements have been met:

(1) Each species and variety is properly labeled as to scientific name and state of origin.

(2) One of the following two conditions has been complied with:

(a) The planting stock was grown in compliance with the conditions of an official certification program in the state in which the planting stock was grown, which includes inspection and indexing on suitable indicator plants to verify freedom from peach rosette disease; or

(b) The planting stock was tested through laboratory methods approved by the department and found free of the causal phytoplasma of peach rosette disease. Sampling for this test must be performed late in the growing season.

(3) Peach rosette disease symptoms were not found during the period when the planting stock was growing or budwood taken.

(4) No symptomless carrier listed in WAC 16-487-140 existed on the growing grounds during the production of the planting stock, except symptomless carrier planting stock that fulfills the requirements in subsection (2) of this section.