(1) Registered strawberry plants must originate directly from foundation stock.

(2) Certified strawberry plants must be planted with first year plantings of registered or foundation stock.

(3) Registered or certified strawberry plants must be grown in an insect-proof facility or in a field that is at least one-half mile from any noncertified strawberry plants.

(4) The grower must remove or rogue all low-yielding, diseased, off-type or abnormal plants.

(5) Use of any pesticide which suppresses the symptoms of red stele without eradicating the causal pathogen is prohibited.

(6) If registered or certified strawberry plants are grown in a field, all of the following conditions must be complied with:

(a) The field must not have been planted with strawberries during the previous growing season, unless the plants are of the same variety and class and one or both of the following two conditions have been complied with:

(i) The field was inspected by the department in the previous year and found free of red stele; or

(ii) The field was fumigated or treated to control red stele by methods approved by the department.

(b) Each variety must be separated by a distance of at least twelve feet.

(c) All insects and diseases must be effectively controlled using methods recommended by the Washington State University Cooperative Agricultural Extension Service.

(d) The field must be relatively free of weeds.