(1) Grapevines or parts of grape plants may be designated as registered stock or certified stock, if they and the stock from which they were produced have been inspected, indexed, and tested in accordance with procedures and requirements outlined in this chapter and found to be in compliance with all standards and requirements established in this chapter.

(2) The issuance of a state of Washington plant tag, stamp, or other document under this chapter means only that the tagged, stamped, or otherwise documented planting stock has been subjected to standards and procedures described in this chapter and determined to be in compliance with its standards and requirements. The department disclaims all expressed or implied warranties, including without limitation, implied warranties of merchantability and fitness for particular purpose, regarding all plants, plant parts, and plant materials under this chapter.

(3) The department is not responsible for disease, genetic disorders, off-type, failure of performance, mislabeling, or otherwise, in connection with this chapter. No grower, nursery dealer, government official, or other person is authorized to give any expressed or implied warranty, or to accept financial responsibility on behalf of the department regarding this chapter.

(4) Participation in the grape planting stock certification program is voluntary.