Weeds, as used in this Chapter, includes any of the following:
A. Weeds which bear seeds of a downy or wingy nature.
B. 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.
C. Weeds which are otherwise noxious or dangerous.
D. Poison oak and poison ivy when the conditions of growth are such as to constitute a menace to the public health.
E. Dry grass, stubble, brush, litter or other flammable material which endangers the public safety by creating a fire hazard.