12 BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE [Jan.-March 
(1) True bulbs, conns, and tubors. when dormant, except for storage growth, 
and when free from soil, are exempt from the requirement of certification, 
except that this exempt ion does not apply to dahlia tubers. 
i 2 i No restrictions are placed on the interstate movement of nursery and 
ornamental stock imported from foreign countries when reshipped from 1 lie 
port of entry in the unopened original container and labeled as to each con- 
tainer with a copy certificate of the country from which it was exported, a 
statement of the general nature and quantity of the contents, the name and 
address of the consignee, and the country and locality where grown. 
(3) No restrictions are placed on the interstate movement between October 
16 and June 14, inclusive, of cut flowers, and of portions of plants without 
roots and free from soil (such as branches and twigs of trees and shrubs, 
BCions, Christmas trees, holly, laurel, sphagnum moss, and parts of submerged 
aquatic plants without roots). 
(4) No certificate or permit will be required for the interstate movement 
of nursery and ornamental stock when transported by a common carrier on a 
through bill of lading either from an area not under regulation through a 
regulated area, or from a regulated area through a nonregulated area to another 
regulated area. 
SECTION B. CONDITIONS GOVERNING THE ISSUANCE OF CERTIFICATES AND PERMITS 
For the purpose of certification of nursery and ornamental stock, nurseries, 
greenhouses, and other premises concerned in the movement of such stock will 
be classified as follows : 
(1) Class I. — Nurseries, greenhouses, and other premises concerned in the 
movement of nursery and ornamental stock on or within approximately 500 
feet of which no infestation has been found may be classified as class I. Upon 
compliance with the requirements of subsection (6) of this section, nursery 
and ornamental stock may be certified by the inspector for shipment from such 
premises without further inspection, and without meeting the safeguards pre- 
scribed as a condition of interstate shipment of plants originating in nurseries 
or greenhouses of class III. 
(2) Class III. — (a) Nurseries, greenhouses, and other premises concerned 
in the movement of nursery and ornamental stock on which either grubs in 
the soil or one or more beetles have been found, will be classified as class III. 
Such classification also may be given to nurseries, etc., in localities known to 
be generally infested where one or more beetles or grubs are found in the 
immediate proximity (wdthin approximately 500 feet) of such nurseries, etc., 
on adjacent property or properties. In the case of nursery properties, under 
single ownership and management, but represented by parcels of land widely 
separated, such parcels may be independently classified either as class I or 
class III upon compliance with such conditions and safeguards as shall be 
required by the inspector. Similarly, unit nursery properties, which would 
otherwise fall in class III, may be open to subdivision, for the purpose of rating 
such subdivisions in classes I or III, when in the judgment of the inspector 
such action is warranted by recent and scanty infestation limited to a portion 
of the nursery concerned : Provided, That the subdivision containing the infes- 
tation shall be clearly marked by boundaries of a permanent nature which 
snail be approximately 500 feet beyond the point where the infestation occurs. 
(6) Upon compliance with subsections (3) and (6) 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: (/) That the roots shall 
be treated by means approved by the Bureau of Entomology and Plant Quaran- 
tine in manner and by method satisfactory to the inspector ; or (ii) in the case 
of plants in which the root system is such that a thorough inspection may be 
made, that the soil shall be entirely removed from the stock by shaking or wash- 
ing, or (Hi) 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 potting 
beds, heeling-in areas, hotbeds, coldframes, and similar plots: 
(a) Ventilators, doors, and all other openings in greenhouses or coldframes 
on premises in class III shall be kept screened in manner satisfactory to the 
inspector 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. 
