10 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [Jan.-Mar. 
(ii) Upon compliance with paragraphs (b) (3), (6), and (7) of this section, 
nursery and ornamental stock may be certified by the inspector for shipment 
from such premises under any one of the following conditions: (a) That the 
roots shall be treated by means approved by the Bureau of Entomology and 
Plant Quarantine in manner and by method satisfactory to the inspector; or 
(&) in the case of plants in which the root system is such that a thorough in- 
spection may be made, that the soil shall be entirely removed from the stock by 
slinking or washing; or (c) that it shall be shown by evidence satisfactory to 
the inspector that the plants concerned were produced in a certified greenhouse. 
(3) Greenhouses of class III may be certified upon compliance with all the 
following conditions with respect to the greenhouses themselves and to all pot- 
ting beds, heeling-in areas, hotbeds, eoldframes, and similar plots; 
(i) Ventilators, doors, and all other openings in greenhouses or eoldframes on 
premises in class III shall be kept screened in manner satisfactory to the in- 
spector during the period of flight of the beetle, namely, south of the northern 
boundaries of Maryland and Delaware between June 1 and October 1, inclusive, 
or north thereof between June 15 and October 15, inclusive. 
(ii) Prior to introduction into nurseries or greenhouses, sand, if contaminated 
with vegetable matter, soil, earth, peat, compost, or manure taken from infested 
locations or which may have been exposed to infestation, must be sterilized or 
fumigated under the direction and supervision of, and in manner and by method 
satisfactory to, the inspector. If such sand, soil, earth, peat, compost, or manure 
is not to be immediately used in such greenhouses, it must be protected from 
possible infestation in manner and by method satisfactory to the inspector. 
(iii) All potted plants placed in certified greenhouses of class III and all 
potted plants to be certified for interstate movement therefrom (a) shall be 
potted in certified soil; (b) shall, if grown outdoors south of the northern 
boundaries of Maryland and Delaware at any time between June 1 and October 
1, inclusive, or north thereof at any time between June 15 and October 15, 
inclusive, be kept in screened frames while outdoors; (c) shall, if grown outdoors 
during any part of the year, be placed in beds in which the soil or other mate- 
rial shall have been treated in manner and by method approved by the Bureau 
of Entomology and Plant Quarantine to eliminate infestation; and (d) shall 
comply with such other safeguards as may be required by the inspector. 
(4) Cut flowers may be certified for movement either (i) when they have been 
inspected by an inspector and found free from infestation, or (ii) when they 
have been grown on a class I establishment or in a certified greenhouse of class 
III and are transported under such safeguards as will in the judgment of the 
inspector prevent infestation. (See also paragraph (a) (3) of this section.) 
(5) Nursery and ornamental stock originating on or moved from unclassified 
premises may be certified by the inspector under either one of the following 
conditions: (i) That the soil shall be entirely removed from the stock, or (ii) 
that the roots shall be treated by means approved by the Bureau of Entomology 
and Plant Quarantine in manner and by method satisfactory to the inspector, 
or (iii) that it shall be shown by evidence satisfactory to the inspector that the 
accompanying soil was obtained at such points and under such conditions that 
in his judgment no infestation could exist therein. 
(6) Nurserymen, florists, dealers, and others, in order to maintain a class III 
status, shall report immediately on forms provided for that purpose all their 
sales or shipments of nursery and ornamental stock, sand, if contaminated with 
vegetable matter, soil, earth, peat, compost, and manure both to points outside 
the regulated areas and to other classified nurseries or greenhouses within the 
regulated area. Certification may be denied to any person who has omitted to 
make the report required by this section, and such denial of certification shall 
continue until the information so omitted has been supplied. 
(7) Nurserymen, florists, dealers, and others, in order to maintain a class I 
status, or to maintain in a class III establishment, a class I subdivision, a cer- 
tified plot, or a certified greenhouse, (i) shall restrict their purchases or receipts 
of nursery and ornamental stock, sand, if contaminated with vegetable matter 
soil, earth, peat, compost, and manure, secured within the regulated area and 
intended for use on class I or certified premises, to articles which have been 
certified under these regulations as to each such article and the said certificate 
shall accompany the article when moved: (ii) shall obtain approval of the 
inspector before such articles are received on class I or certified premises or are 
taken into certified greenhouses: (iii) shall report immediately in writing all 
purchases or receipts of such articles secured from within the regulated area for 
