Property owners are expected to maintain their properties hazard
free throughout the year. Dense native brush, certain ornamental
vegetation and neglected/dead landscaping can burn almost any time
of the year, but new annual weeds and grass may not become a significant
hazard until they start to dry in late spring at which point they
become an increasingly dangerous fire hazard until they are cut or
removed. Refer to the next section for more information on when
property clearance should be performed.
ACWM tractor discing operations begin as early as April 1 at which
time annual weeds may still be green in some areas. This is because
ACWM must take advantage of a very narrow window of opportunity to
clear as many weeds as possible before the onset of the fire season.
Specific Requirements
Property must be maintained free of hazardous vegetation for a minimum
of 100 feet from any home or other structure adjacent to the property
and a minimum of 10 feet along roads. Clearance of hazardous vegetation
up to 200 feet is required in many areas because of additional fire
hazard conditions. These high fire hazard areas are usually in or
near foothills or other areas with slopes and native brush.
The entire 100 feet (or 200 feet in high fire hazard areas) does
not have to be cleared down to bare ground in most cases. Refer to
the following guidelines:
Dry grass and weeds:
Since dry grass and weeds are the most likely fuel to start
a fire, they should be cut or mowed to a height of 3 inches
or less throughout the entire clearance area unless it is needed
for soil stabilization. In most cases, the dry grass and weeds
can simply be left on site if they are cut into small pieces
no more than 6 inches in length. (Click here for examples)
Grass and other vegetation located more than 30 feet from a
structure and less than 18 inches in height above the ground,
may be maintained where necessary to stabilize the soil and prevent
erosion. If this is the case, please contact our office at (626)
575-5484.
Native brush, trees and shrubs:
There should be very little to no native brush within about
30 feet of a home or other structure. Beyond that distance,
individual specimens of native brush can remain as long
as they are isolated from one another by a distance of
at least 15 feet or three times their diameter and are
maintained free of all dead and dying material. Taller
shrubs and trees should be limbed up from the ground to
about 1/3 of their height so that they are less likely
to ignite from a fire originating from the ground. (Click
here for examples)
Please see Native Tree Protection Ordinances below
for restrictions on tree trimming.
Dry or neglected landscaping/ornamental vegetation:
There should be no dry, dead or neglected landscaping/ornamental
vegetation, including cultivated ground cover such as grass,
ivy, succulents, or similar plants, in the clearance area if
such vegetation provides a means of transmitting a fire to
a structure or if such vegetation provides a means of transmitting
fire from a structure to adjacent land. (Click
here for examples)
There may be additional requirements for improved
properties. Contact the Los Angeles County Fire Department's
Brush Clearance Unit at (626) 969-2375.
Tumbleweeds
Over the years, the tumbleweed element of ACWM's weed abatement
program has been successful at reducing one of the Antelope Valley's
worst natural plagues. Each year, ACWM includes vacant properties
in the program if there is a reasonable likelihood that that tumbleweeds
will grow and mature on the property in amounts sufficient to cause
such unsafe, destructive or nuisance conditions as:
Posing a fire hazard to adjacent homes
Blowing across highways and through busy intersections
Building up along homes and businesses
Clogging swimming pools
Damaging agricultural crops and irrigation
equipment
Many of the properties included in the program
because of tumbleweeds are not adjacent to homes and therefore
owners may not have to remove annual weeds, brush or other
vegetation. If you are unsure about what you are supposed
to do, you should call our Antelope Valley office at (661)
974-8803.
It is ACWM's experience that the best time
to abate tumbleweeds is just after they become dry but before
they begin to blow off the property driven by one of the Antelope
Valley's frequent windstorms. For this reason, ACWM does not
begin systematically inspecting vacant properties for tumbleweed
abatement until October 1. For more information on the tumbleweed
program,click
here.
Figure 2: A scanned image from the October 25,
1990, Los Angeles Times showing residents digging
out of an Antelope Valley home after a tumbleweed "storm".
Some residents were reportedly trapped inside their homes by
huge mounds of the invasive plant.
Native Tree Protection Ordinances
In many areas of the County, certain native trees like oaks,
walnuts, and sycamores are
protected by County or city ordinances.
The table below shows a list of known native tree protection ordinances.
There may be others so property owners planning to cut or trim native trees
should check with their city first.