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Weed regulations
Due
to their competitive nature, "noxious" and "exotic" weeds can be a problem
with respect to preserving and restoring native plants. The State of Illinois
has established policy with respect to both categories of weeds.
- Illinois
Noxious Weed Law:
The
Illinois Noxious Weed Law (505 ILCS 100/1) is intended to control weeds
that are a problem to agriculture, and enforcement of the law is assigned
to the Illinois Department of Agriculture. The list of noxious weeds is
determined by Director of the Department of Agriculture, the Dean of the
College of Agriculture of the University of Illinois, and the Director
of the Agricultural Experiment Station at the University of Illinois.
The list of official
noxious weeds in Illinois includes:
- Canada thistle
- common ragweed
- giant ragweed
- marijuana
- musk thistle
- perennial members
of the sorghum genus
- perennial sow
thistle
County boards are
defined as the "control authorities" for weed control operating under
rules established by the Department of Agriculture. Land owners are responsible
for controlling noxious weeds on their property. The control authority
can issue notices for such control in order to require compliance.
Local officials could work with county government and the Illinois Department
of Agriculture in identifying and eradicating infestations of noxious
weeds. Volunteer stewards working with conservation organizations often
have experience in the techniques for removing noxious weeds.
- Illinois
Exotic Weed Act:
Another
law dealing with weeds is the Illinois Exotic Weed Act (525 ILCS 10).
This Act tries to avoid spreading non-native invasive plants that degrade
natural plant communities, reduce the value of fish and wildlife habitat,
or threaten Illinois endangered or threatened species. The Act prohibits
the buying, selling, distributing, or planting of seeds or plants of designated
exotic weeds.
Designated exotic
weeds are:
- Japanese honeysuckle
(Lonicera japonica)
- Multiflora rose
(Rosa multiflora)
- Purple loosestrife
(Lythrum salicaria)
A site plan for natural
landscaping may necessitate the removal of both noxious and exotic weeds.
- Municipal
Weed Ordinances:
Municipal
weed laws have sometimes become the "lightning rod" for controversy associated
with natural landscaping. Communities adopt weed laws in order to prevent
unsightliness from poor property maintenance and to prevent hazards from
vermin and fire, which were believed to be caused by unkempt vegetation.
The drafting of such laws usually occurred prior to or without knowledge
of natural plant communities. Weed laws, if not carefully worded, can
equate natural landscaping with unmanaged landscapes. In fact, natural
landscaping is managed and does not pose the hazards that weed laws are
intended to address.
Community and neighborhood sentiment regarding aesthetics and appearance
has sometimes led citizens to look to weed laws as a way of opposing natural
landscaping. Courts have determined that concerns about vermin, fire hazards,
mosquitoes, and allergies are unfounded. A well-crafted ordinance, coupled
with public education illustrating the benefits of natural landscaping,
should be adequate to provide a local framework to support natural landscaping.
Municipalities
have responded to the natural landscaping movement and weed laws in various
ways.
- Permissive
Approach:
Madison,
Wisconsin was among the first communities to encourage natural landscaping
by taking a permitting approach. The ordinance requires homeowners to
file an application for natural landscaping and obtain approval from a
majority of neighbors.
- Improved
Weed Laws:
More recently
enacted weed laws allow natural landscaping "by right" without case by
case neighbor or city permission. There are three main approaches to crafting
or modifying a weed law:
- Require a setback.
- Include broadly
worded exceptions for natural landscaping.
- Encourage natural
landscaping.
1. Require
A Setback
Weed
laws have traditionally regulated height. For example, weeds exceeding
10 inches in height may not be permitted. The newer and more sophisticated
weed laws address the appearance issue by requiring that a setback or
buffer strip on the periphery of the property be maintained at a maximum
height (such as 12 inches). Vegetation behind the setback and within the
yard is unregulated except for control of listed noxious weeds.
Setback distances
depend on the type of community and size of the typical lot. Communities
with homes on large lots could have as much as a twenty-foot setback,
while in towns with smaller lots, a two- or three-foot setback would be
more suitable.
Setback laws
have several advantages and represent a workable compromise between the
sometimes diverse interests of the village, natural landscapers and neighbors.
Primarily, setback ordinances allow for the unregulated growing of vegetation
on a majority of the lot. Like a frame around an abstract painting, the
setback around the perimeter of a natural area creates a tended look that
satisfies neighbor and village concerns of conformity and aesthetics.
The yard takes on its intended look. A setback also solves the practical
problems caused by large plants and grasses lopping over into neighbor
yards or across sidewalks. The setback ordinances are also easy to understand
and enforce. Both the village and the natural landscaper benefit from
a clear and simple law. Neighbor complaints are generally satisfied by
such compromise and living in a community makes compromise essential.
A reasonable
exception to setback requirements is where adjacent landowners mutually
agree to continuous natural landscaping across adjacent property lines.
2. Include
Broadly Worded Exceptions in the Weed Ordinance for Beneficial Landscapes
These
exceptions may include the following:
Native plantings
-- the use of native plant species for aesthetic and/or wildlife reasons
Wildlife plantings
-- the use of native and/or introduced plant species to attract and
aid wildlife
Erosion control
-- to offset and control any soil loss problems both occurring and predicted
Soil fertility
building -- the enrichment and eventual stabilization of soil fertility
through the use of various plant species
Governmental
programs -- any federal, state or local programs which require the
unimpaired growth of plants during a majority or all of the growing
season
Educational
programs -- any areas designated for educational studies
Cultivation
-- any plant species or group of plant species native or introduced
and grown for consumption, pleasure or business reasons
Biological control
-- the planting of a particular plant species or group of species which
will effectively out-.compete and replace a noxious or troublesome weed
species without additional soil disturbance of the site
Parks and open
space -- any and all public parks and open space lands whether under
the jurisdiction of federal, state, or local agencies including private
conservation/preservation organizations
Wooded areas
-- all areas that are predominantly wooded
3. Encourage
Natural Landscaping
This approach promotes
the use of natural landscaping in its broadest sense.
Long Grove,
Illinois, is a good example of a community that embodies this policy.
Long Grove has no law regulating vegetation height. The village requires
developers to include scenic easements, at least one hundred feet deep
and planted with native plants, wildflowers and grasses between the homes
and major streets in their subdivisions. Large portions of the town are
designated natural areas as determined by a scientific ecological survey.
Long Grove employs a naturalist to advise developers and homeowners on
how to cultivate and maintain natural landscapes. Long Grove sells native
plants and seed mixes to residents and has a committee that reviews prairie
restoration projects within the village.
Fort Collins,
Colorado employs a full time wildlife biologist and has a ten acre nature
preserve in the heart of downtown on land that used to be a formal park.
There is a city program to identify and certify homeowner's backyard wildlife
habitats. To receive this certification, homeowners must let nature reclaim
their non-native lawns. Hundred of citizens participate in the program
There are many
possible variations that can be developed to respond to local conditions.
A community may want to try a pilot program directed within a selected
neighborhood, pertaining to particular land uses such as campus-style
uses, or targeted towards less visible locations on sites.
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