2005 California Food and Agricultural Code Sections 7201-7207 Article 1. Weed-Free Areas

7201.  The director, after investigation and practical survey, may
consult with other state and federal agencies having responsibility
for forest management and protection of native species and, by
proclamation, declare an area within this state to be practically
free from any noxious weed, as defined in Section 5004, which is
named in the proclamation.
7202.  Any area which is declared by proclamation pursuant to this
article to be practically free from any noxious weed named in the
proclamation shall be known as a weed-free area, as to any noxious
weed named in the proclamation.  The name of the noxious weed shall
be a part of the name of the weed-free area.
7203.  The director may by similar proclamation change the
boundaries of a weed-free area or declare the weed-free area free
from any additional noxious weeds, naming the noxious weed.
7204.  A proclamation pursuant to this article shall be under the
seal of the department.  It shall be published in a newspaper or farm
journal of general circulation, published and circulated in the area
which is to be affected by the proclamation, at least once a week
for two successive weeks.  If there is no such newspaper or farm
journal, a copy of the proclamation shall be posted in one or more
public places in the area.
7205.  The director may adopt such regulations as may be necessary
to carry out the provisions of this article.  He, and the
commissioners under the supervision and control of the director,
shall enforce such provisions and regulations.
7206.  It is unlawful for any person to sell, distribute, or
transport into, or within, any weed-free area any seed of any noxious
weed of which the area has been declared to be practically free.
7207.  It is unlawful for any person that owns or possesses any land
within any weed-free area to knowingly permit any noxious weed of
which the area has been declared to be practically free, to mature
upon his land and disseminate its seed or to propagate itself by
other means upon such land, or on the land of another.