(1) "Director" means the director of the Washington state department of agriculture or the director's authorized representative.

(2) "Department" means the Washington state department of agriculture.

(3) "Growing ground" means any property within the area under quarantine on which planting stock produced for distribution or sale.

(4) "Indicator plant" means any herbaceous or woody plant used to index or test for infection.

(5) "Index" means to test for infection by means of inoculation from the plant to be tested to an indicator plant, or by any other method approved by the department.

(6) "Planting stock" means any plant material used in the propagation of horticultural, floracultural or viticultural plants for the purpose of being sold, offered for sale or distributed for planting or reproduction purposes.

(7) "Symptomless carrier" means a plant which may be infected by or capable of hosting a disease agent but which does not show visible disease symptoms.