Forestry Division, Public Works & Natural Resources
maintains and cares for trees on public property, including parks,
arterials, greenways, ditches, retention sites and around public buildings.
Maintenance includes planting new trees, trimming existing trees, spraying
trees, testing trees for disease and removing dead and/or diseased trees.
This service also responds to citizen questions and concerns, and conducts
public education programs.
Emerald Ash Borer
Emerald Ash Borer (EAB) is a non-native, wood-boring bettle that can attach all ash (Fraxinus) tree species. This insect was first discovered in Michigan in 2002, and since then it has spread to 22 states, with Colorado being the most recent. The ash tree is very commonly planted tree in many communities. EAB has killed tens of millions of ash trees in the United States. Once the EAB population builds in numbers, ash mortality is near 100%.
The City of Boulder first discovered and confirmed the presence of Emerald Ash Borer in September, 2013. Boulder Urban Forestry is presently conducting a delimitation survey to determine the extent to which EAB has spread within the City of Boulder. Results from this survey should be available soon.
On November 12, 2013 the Colorado Department of Agriculture established a quarantine zone around Boulder County, the City of Erie, and the Republic Landfill (north Jefferson County) off of Highway 93.
Longmont area ash tree population is estimated at approximately 43,000 trees. The City of Longmont has conducted an initial ash inspection survey and as of December 2013, EAB has not been found in Longmont.
Colorado Department of Agriculture and Colorado State Cooperative Extension recommend that preventative treatments should begin when Emerald Ash Borer presence has been confirmed within a five (5) mile radius. Therefore, EAB treatment for ash trees in Longmont is not recommended at this time.
More information on symptoms, treatment and reporting are available at: http://www.eabcolorado.com
to do about trees damaged by snowstorms
Tree care and maintenance is the
responsibility of the owner of the tree. A tree located on private property
is the responsibility of that property owner. Trees located on public property
such as Parks, around municipal buildings and in the street right-of-ways
are the responsibility of the City of Longmont.
If you are in need of assistance addressing tree concerns on your
property, please use an arborist provided on this list 2013 Licensed Tree Contractors. These tree contractors are licensed
and have the necessary insurance to perform work in the City of Longmont.
The City does not endorse any of the contractors on this list, but provides
this contact information as a service to residents.
Please understand that an Arborist is a specialist in the care of individual
trees. Arborists are knowledgeable about the needs of trees and are trained
and equipped to provide proper tree care. Pruning or removing trees, especially
large trees, can be dangerous work. Tree work should only be done by those
trained and equipped to work safely in trees.
For questions or additional information, please call Forestry
Services at 303-651-8446.
Public Concerns / Questions -
- Reporting downed or damaged trees
- Contact our Forestry Services at 303-651-8449, or call the general Parks office at 303-651-8446
- Elm tree leaves looking brown and little worms falling to the ground? It is an insect called Elm Leafminer!
- Are excessive needles from your Spruce, Fir, or Pine Tree? Are there dead limbs?
- Dead limbs in your Walnut Tree?
Winter Tree Watering Guidelines
Long, warm, dry weather conditions in the winter can injure or cause death to plant root systems!
- Tree roots are not like carrots. Root systems are 2-3 times wider than the height of the tree and most absorbing roots are in the first 12 inches of soil.
- Apply water to the critical root zone (see illustration boxed area), water beyond dripling if possible.
- Minimum water amount is 10 gallons per inch of tree trunk diameter.
- Water deeply and slowly once a month when temperature is above 40 degrees F.
- Apply much where possible to help conserve soil moisture.
Forestry and the Environment
(from the 2008 Tree Canopy study)
Longmont’s current urban forest was found to store 62,873 tons of carbon,
sequester 489.5 tons per year, and when including stormwater & water quality benefits,
constitutes a combined value of over $8,400,000.00 in savings to the city."
"The City of Longmont has a current tree canopy of 1461 acres or about 8.7% of the citywide
area of 16,704 acres. The impervious surfaces total close to 40% of the city (7766
acres), which includes impervious surfaces that are drained to a sewer and compacted
dirt or gravel surfaces.
The current tree canopy cover CITYgreen report for Longmont reflects a value of
$246,825 in air quality pollutant removal savings and a total carbon storage capacity of
around 62,873 tons.
With an increase in total tree canopy to 25% coverage or an additional 2715 acres,
the storage capacity increases to 179,696 tons with an additional 1399 tons sequestered
annually based on tree growth. Moreover, the city realizes a
significant cost savings due to the improved canopy ($705,441), an increase of
$458,616. The payback includes tens of thousands of pounds of widespread air pollutant
removal, greater than before health benefits, lesser costs associated with poor health,
and an aesthetically more pleasing cityscape, just to name a few.
Trees impact stormwater runoff in a number of ways. With an increased tree canopy
from 9% to 25%, the city could potentially realize over $20M (twenty million dollars) in
runoff savings and would require almost 10 million cubic feet less in water retention
2008 Tree Canopy Study - link here (2.3 MB)
303-774-4385 ext 1
303-774-4385 ext. 2