Washington Administrative Code
Title 16 - Agriculture, Department of (See also Titles 24, 60, and 142)
QUARANTINE ORDERS AND PLANT MOVEMENT
Chapter 16-470 - Quarantine-Agricultural pests
Section 16-470-710 - Regulated articles

(1) The upper eight inches of topsoil containing vegetative material from all properties including, but not limited to, residential, agricultural, and commercial properties (including construction sites);

(2) Humus and compost (except when produced commercially), and growing media (except when commercially packaged);

(3) Yard debris, meaning plant material commonly created in the course of maintaining yards and gardens and through horticulture, gardening, landscaping, or similar activities. Yard debris includes, but is not limited to, grass clippings, leaves, branches, brush, weeds, flowers, roots, windfall fruit, and vegetable garden debris;

(4) Plants for planting and propagation, except when dormant and bareroot and free from soil or growing media, including:

(5) Turfgrass (sod);

(6) Hop bines and unshucked corn ears harvested during the Japanese beetle adult flight season (May 15th through October 15th);

(7) Cut flowers for decorative purposes; and

(8) Any other plant, plant part, article, or means of conveyance when it is determined by the director to present a hazard of spreading live Japanese beetle due to either infestation, or exposure to infestation.