Landscaping Rules in Longmont, CO (2026)
5 verified landscaping rules for Longmont, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Tree Trimming
Property owners in Longmont must trim or remove trees that block sight lines or fail to clear 15 feet over streets and 8 feet over sidewalks.
Longmont Street Tree Clearance Rule
Some RestrictionsLongmont Municipal Code § 13.24.030
It shall be the obligation of the owner of any property to remove, trim, or otherwise treat trees and plants which: A.Project into or encroach upon any public right-of-way in such a manner as to interfere with, obstruct, or endanger the safe public use of the right-of-way for pedestrian or vehicular traffic.B.Fail to provide clearance over streets and other rights-of-way of at least 15 feet ...
Tree Removal & Heritage Trees
Removing, pruning or destroying a tree or shrub on Longmont city property without an approved permit from the director of Public Works and Natural Resources is unlawful under Longmont Municipal Code § 13.24.120. Unauthorized removal after a permit denial costs three times the tree's appraised value under § 13.24.130, and anyone responsible for a tree that dies on city property must replace it if the director requires under § 13.24.140.
Longmont City Tree Removal Permit
Significant RestrictionsLongmont Municipal Code §§ 13.24.120, 13.24.130, 13.24.140, 13.24.190
It shall be unlawful for any person to plant, prune, remove, or destroy any tree or shrub on city property without having first obtained an approved permit from the director of public works and natural resources or a designee. ... Any person causing removal of any tree on city property, after being denied a permit to do so, shall be responsible for three times the appraised value of said tree. ...
Weed Ordinances
Longmont bans weeds and unsightly vegetation over 12 inches tall on any lot, including the strip abutting the public right-of-way, and treats noxious weeds as a public nuisance.
Longmont Weed Control Ordinance
Some RestrictionsLongmont Municipal Code § 9.32.010
It is unlawful for any person owning or having possession of any land, including any abutting the public right-of-way, to permit any weeds, grasses or other unsightly vegetation to grow in height exceeding 12 inches or to otherwise become a nuisance. For purposes of this section, the term "public right-of-way" means and includes the nontraveled portion of any street or alley. The following are ...
Water Restrictions
Longmont's public works director can impose nonemergency watering schedules for lawns and gardens citywide, backed by escalating fines up to $500 per violation for customers who don't comply.
Longmont Lawn Watering Restrictions
Some RestrictionsLongmont Municipal Code § 14.04.450(A)
The director of public works and natural resources may implement nonemergency watering restrictions of domestic water used for garden, lawn or other exterior watering or sprinkling applications as the director finds necessary for the conservation, preservation and efficient management of the city's water resources... The watering frequency and schedule shall be determined by the director at tim...
Native Plants
Longmont's land development code requires that at least 75 percent of every landscaped area be covered in drought-tolerant vegetation or native ground cover, with nonfunctional turf banned outright. Functional turf is allowed only where it serves a civic, community or recreational purpose. The standard applies citywide to new development and redevelopment landscape plans under Municipal Code § 15.05.040.C.2.a.v.
Longmont Native Plant Ground Cover Requirement
Some RestrictionsLongmont Municipal Code § 15.05.040.C.2.a.v
v.Landscaped areas shall be covered with at least 75 percent of the areas with drought-tolerant vegetation or native ground cover, except for areas where additional hardscape is allowed or as allowed for an alternative landscape plan. Nonfunctional turf is prohibited. Functional turf may be used only in areas designated for civic, community, or recreational use.
Looking for Boulder County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Longmont city rules.
Landscaping Rules in Boulder County →