For the purpose of this subchapter,
WEEDS includes any of the following:
(1) Weeds which bear seeds of a downy or wingy nature;
(2) Sagebrush, chaparral and any other brush or weeds which attain such large growth as to become, when dry, a fire menace to adjacent improved property;
(3) Weeds which are otherwise noxious or dangerous;
(4) Poison oak and poison ivy when the conditions of growth are such as to constitute a menace to the public health;
(5) Dry grass, stubble, brush, litter or other flammable material which endangers the public safety by creating a fire hazard;
('65 Code, § 6-4.303) (Ord. 315-C.S., passed - - )