6 Bugs That Can Harm Or Kill Trees And Plants In The Rocky Mountain Region

Rocky Mountain Region

We all know that insects are a vital part of our environment. But at the same time, it is worth noting that some of these bugs tend to cause a lot of harm to trees and plants and therefore may need to be kept under control. We list down different bugs that can harm or kill trees and plants in the Rocky Mountain region. Read on.

1. Mountain Pine Beetle

This aggressive beetle is renowned for its destructive nature, characterized by major pitch tubes on a tree’s bark. Outbreaks usually happen in mature forests. One sign of mountain pine beetle infestation is gradual fading of trees from yellow-green to red-brown. You can easily tell that a tree is a host of this beetle mainly because you will find woodpeckers digging beneath the barks for larvae. The dark-brown cylindrical insect has been cited as a cause of destruction of lodgepole pine trees in Rocky Mountain National Park since 1996.

2. Eastern Tent Caterpillar

This is a dangerous foliage attacker that has made willows, wild cherry, apple, pear, hawthorn and plum trees its preferred residence. You will find colonies living in conspicuous nests during winter from where they create unsightly silky tents. As the family grows, so does the demand for food – which then means the host tree is stripped off all its twigs. Fortunately, despite weakening trees, these cocoons hardly kill them.

3. Peachtree Borer

The Colorado State University categorizes it as the most destructive insect pest of plum, cherry and other fruit trees. This is because the borer hides under the bark of trees creating massive gouges (also affects upper roots of living trees). Its young larvae dig into the sapwood of the tree causing wounds in the bark. The harm is usually massive during warmer weather as the larvae have to feed more before reaching pupa stage.

4. Tiger Moth

This is not your ordinary moth – it has reddish brown forewings and white hindwings. It spends most of its time around pine trees producing larvae (caterpillars) whose hair causes a skin rash when it comes in contact with some people. While the moth is blamed for the bulk of harmful effects, the larvae is actually the main culprit because it feeds extensively on foliage. This can cause significant injuries if left unchecked although permanent effects are rarely reported.

5. Terminal Weevil

Every April, an army of these marauding creatures emerges creating punctures around trees as it feeds. Two months later, they hatch eggs thereby giving way to formation of larvae, which kill terminal shoots causing loss of 2 years of growth. It’s easy to tell when a tree is under terminal weevil attack as the top begins to droop in midsummer.

6. Spider Mites

Unlike their namesakes (spiders), spider mites eat plants as they are herbivores, not carnivores. They usually devour host plants by piercing and sucking out the fluids – this gradually causes browning or yellowing of leaves. Besides doing that, they create webbing that not is not only unsightly but also can damage the plant leaves. It’s even more challenging to deal with these spider mites because they tend to be fuelled by use of insecticides and fungicides which may kill other organisms that keep the mites under control.


This is by no means an exhaustive list of bugs that can cause permanent harm or even kill your trees/plants. Different weather patterns, foliage and even tree age may determine the kind of insects that attack.  If you have specific questions or notice an infestation, be sure to call your local tree service, if you are in the Denver area feel free to contact TreeRemovalDenver.net at 855-335-1596.

Quick History of the “Free Trees” Movement in Denver

If you read the term “Emerald ash borer” quickly, you might think it was a description of some beautiful place in Ireland. But upon closer look, you’ll see it doesn’t say that at all. Emerald ash borer, also known as EAB, is a pest that’s been plaguing ash trees across the United States since 2002. The larvae eat the bark of ash trees preventing them from transporting water and nutrients throughout its system. So far 25 states have been impacted.

While not yet sighted in Denver, Colorado, in 2013 it was seen in Boulder and last summer it arrived in Longmont. So these destructive beetles are getting closer. But the citizens of Denver aren’t going to wait until they come. In a proactive stance against the primary enemy of the ash tree, Denver launched a free trees program. Spearheaded by The Parks People and supported by Be A Smart Ash, the overall mission of the integrated group is to protect or replace the area’s 330,000 ash trees.

Denver Digs Trees

Denver Digs Trees LogoFounded in 1991, the Denver Digs Trees program has provided Denver with more than 49,000 free or low-cost trees. They dispense a mixture of trees to homeowners and residents in Denver. Sizes range from medium and large shade trees. Precise planting instructions are given with each tree, so it stays healthy.

The program provides excellent options for your free trees. You may ask for a street tree or a yard tree. You can even get both. But plant it according to the specifications provided.The requirements must be followed faithfully.

In 2017 all street trees were free. Free yard trees were available to applicants who may not have been able to get a tree otherwise. If finances are not problem, the cost for yard trees is $35 per tree. Fees vary depending on the neighborhood.

Be A Smart Ash

Be a Smart Ash LogoDenver Digs Trees supports a second program called Be A Smart Ash. This effort is designed to educate Denver about EAB. Right now they fear the EAB has already infiltrated, so they want to spot the parasite before it advances too far. EAB takes up to two years to reveal itself, so identifying it as early as possible helps save more trees.

Be A Smart Ash encourages residents to participate in the free tree program facilitated through Denver Digs Trees. Because it offers a variety of trees, Denver hopes to minimize the damage of the EAB through diversifying its urban canopy.

The Park People

The Park People LogoThe Park People sponsor Denver Digs Trees. The Park People is an organization created in 1969 by dedicated park enthusiasts. This non-profit has grown significantly since then.

The Blue Trees Project

This spring, The Blue Trees Project launched in The Denver Theatre District. It did not give away trees. Instead, using a biologically-safe colorant, it colored 150 trees royal blue. Konstantin Dimopoulos was the performance artist and invited the public to help him. Safe for the trees, the color will fade over time. But the bright blue currently serves as a strong reminder to Denver about the importance of trees, their city’s trees, and their free trees program.

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Article brought to you by Tree Removal Denver.

Types of Tree Diseases that Affect the Denver, Colorado Area

The next time you are out enjoying that breathtaking landscape beauty or basking under a shade on a hot summer afternoon, remember exactly what trees provide for you and the entire planet. Not only do they purify the air, but they also boost property value, offer shade-blocking UV sun rays, cool the environment and better yet provide food.

Their importance and benefit stretches far and wide covering our environment, economical and emotional aspects which is why it is crucial to remember that they constantly need attention.

It is essential that all trees receive sufficient protection from the looming menace of tree diseases. They are especially devastating and if by chance they are left untreated, they can spread throughout an entire plantation.

In the region of Colorado, there are several common tree diseases that affect the trees in the area. They include:

Bacteria Wetwood

Among the most prominent diseases is the Bacteria Wetwood which unfortunately comprises several strains. It attacks multiple shades of trees and leaf types. Wood-colour trees that have been affected by this disease often change and assume a brownish yellow rotten state that forms around the tree’s center.

The wood produces gas and toxic ooze which inhibits healing and growth. Extra care should particularly be adhered to on spotting “alcohol flux” a characteristic white froth that comes with advanced cases.

Cytospora Cankers

This disease attacks tree barks where it creates rings around the trunks and branches. When Canker progresses, its girdles kill all tree-parts above the typical ring created. For most trees, their likelihood of contracting this fungus is particularly high where they are having pre-existing damage to the roots and or where they get stressed. Take particular caution especially with trees having recent wounds more so, birch, and apple, maple, elm, willow and spruce trees.

Marssonina Blight

This is a disease predominant with aspen trees. It manifests by forming brown spots characterized by yellow rings on tree leaves. After this early signs, the resulting effects are leaves decaying and dropping prematurely during summer as opposed to typical fall. This infection weakens trees resulting to further problems.  If you spot this problem, be sure to contact a Colorado-area tree surgeon to have it taken care of before it spreads to more problems.

Powdery Mildew

A fungus which grows as a typical white mildew on any tree surface, it affects numerous shrubs and trees. This mildew affects normal photosynthesis and inspires a host of other further problems.

Shoot Blight

Shoot Blight is a disease caused by a characteristic fungus which is surprisingly absorbed by trees through their leaves. It mainly chokes the tree branches. It mainly manifests through dark spots that appear on the tree leaves which is followed by prompt death. When it advances it can result in branches curling into a distinct �shepherds crook’. With respect to Aspen trees, it mostly spreads during heavy rains and warm temperatures.

The list of tree diseases is wide ranging and also includes Needlecast, Fire Blights, and Anthracnose.

Final Word

For anyone that has witnessed a dying or already dead tree falling especially on their premises has a firsthand experience with the dire repercussions tree diseases can inflict. When you spot any unusual manifestations or signs, a qualified arbotist is the best individual to examine and determine the most appropriate solutions.



Guidelines for Street Tree maintenance, Regulations and Laws in Denver, CO


Everyone loves trees, not only because of the shade it gives us, but also the beauty it brings to the environment and nature at large. Street tree play a major role in the community and requires maintenance every now and then. In Denver, Colorado, property owners are mainly the people responsible for taking care of the street trees. But in real sense they(the trees) are owned by the Denver residents.

To enable proper maintenance of the trees the government has place rules and regulations to be followed while pruning,planting or removal to meet the required ISA standards. On the other hand, if you have private trees such as those in your backyard, you will have fewer regulations to adhere to. In this article we will look at Guidelines for street tree maintenance, regulations and laws in Denver, Colorado.

Here are the top 5 guidelines you need to know for tree maintenance in Denver

  • Permit is Key
Tree Service cutting down a street tree in Denver, CO

Tree Service pruning a street tree in Denver, CO

Always get a permit if you are planning to plant/remove a tree near your home or to trim it. This is to avoid trees being cut off with no reason leading to destruction of trees. The permit is usually free of charge hence you not incur extra cost while getting it. The guidelines for pruning a right of way tree are usually the same as that of the licensed tree service, who can also be hired to maintain the trees if need be.

  • Trees as a Structural Hazard

Some of the trees may be harmful to you and the surrounding hence it is your responsibility to identify them and have them brought down. If you encounter a dispute with your neighbor about any street tree, the matter can be settled in a civil manner or through an intervention from the city arborist. In most cases this happens if the tree is an imminent structural hazard.

  • The Legal Pruning Cut

Legally the pruning cut must be on the outside branch-collar in the following order: first there is an undercut which is about two feet apart, the second cut at the top is a bit further out from the branch collar, while the final cut is done at the front of the branch collar removing the other two foot stub. It is crucial to note that the saws used for pruning are often sharp hence no one should sit under it during the process.

  • Planting Trees in the Right of Way

The evergreen types of trees are not allowed when planting trees in the right of way, as they cover or block the site lines. However, there are other types of trees allowed for shade such as the Kentucky Coffee tree, English Oak, Hack-berry, Texas Red Oak, Bur Oak, Catalpa, Chinkapin Oak, Japanese Pagoda tree, Sycamore and the Yellow-wood tree.

  • Tree Spacing While Planting

If you are planting a street trees you are required to space the as follows; the ornamental-trees should be about twenty five feet apart and the shade-tree to be approximately thirty five feet apart. All other trees should be about twenty feet from the street light, ten feet from the drive-ways, alleys or seven feet from sidewalks.


Trees play an important role in our environment and should not be overlooked. The rules and regulations place protecting the street trees during planting, pruning, remodeling your home, or landscaping should be followed. Above all do not attempt to take down or remove large trees on your own, it is a very dangerous job that needs to be handled by an insured tree company.

Damages to these trees may lead to you receiving an administration citation or a fine by the City Forester’s office. All this can be avoided if you follow the above pointers. For more information about the regulations and guidelines contact Denver Forestry or visit their website.

Types Of Trees Found In Denver, CO and the Rocky Mountains

Denver is the capital city of Colorado State in the United States of America. It is an old metropolis dating back to the old west era. The city is a tourist destination, it has a vast array of parks and museums that speak a lot about American history.  However its most attractive feature has to be its nature.  Among the attractions is the Rocky Mountains National Park. Often people go up there for hiking and the mountains offer some beautiful views that are made beautiful by not only the moutains but the trees as well.

There are a great number of tree species found up in those mountains. Both deciduous and coniferous trees are found and we will talk about a few of them today:

Types of trees found in Denver

The types of trees can be divided into deciduous and coniferous trees, here’s a breakdown below:

(A). Deciduous Trees

These are trees that shed their leaves annually with the oncoming of winter. The types of deciduous trees found in Denver, Colorado include the following:

  • Boxelder (Acer Negundo) Tree in Denver, CO

    A Boxelder on a sunny day in Denver.

    Boxelder (Acer negundo)

It is an indigenous species. The bark of the tree appears a color between a light grey and a light brown and has fissures when it is a seedling which later on develop into furrows as it enlarges to become a tree. It has compound leaves is a cluster of between 3 to 5 pinnate leaflets. The leaflets are 2 to 4 inches long and are green with the top side being paler than the lower side.

They have seeds that are dispersed by wind and hence are winged in adaptation. Their fruits are green when developing but turn tan once mature. The tree can grow up to 35 feet. They are adaptable trees due to the fact that their seeds are dispersed by wind.

  • Chokecherry (Prunus virginiana)
Chokecherry (Prunus virginiana)

A Chokecherry in downtown Denver.

The bark is of a copper color. It is dotted with numerous lenticels for aeration. These lenticels later develop into groves as the tree ages. The leaves are a dark green and glossy with the underside being paler than the top. The leaves are single with a length of 1 to 4 inches and having serrated margins. The fruits are cherry-like in appearance and vary in color from dark red to dark purple.

Other deciduous trees in Denver include: Gambel oak, Narrowleaf Cottonwood, Peachleaf Willow. Plains Cottonwood and Rocky Mountain Maple.

(B). Coniferous Trees

These are trees belonging to the class Coniferales. They are tree species that are evergreen as they do not shed their leaves. They have leaves shaped like pines and they develop cones as their fruits. They usually fertilize asexually. Among the coniferous trees of Denver, Colorado are:

  • Blue Spruce (Picea pungens)
Blue Spruce (Picea pungens)

A Blue Spruce in Boulder, CO

They are characterized by their needle-shaped leaves that are blue in color hence the name. They have brown barks that usually are encrusted by a thick layer of scales for trees that are mature. Their cones are shiny and light brown in color. The seeds are winged as they are dispersed by wind. The trees ca attain a height of 115 feet.

  • Bristlecone Pine. (Pinus aristata)

The color of the bark of this tree usually changes. It is light brown when the tree is an infant but alters to a copper color when the tree matures. The leaves are dark green and are usually densely clustered around a twig. The cones are cylindrical and dark purple in color. Seeds are winged but the wings are detachable.  See image below:

Bristlecone Pine. (Pinus aristata)

Bristlecone Pine, one of the more uniquely shaped trees of the Rocky region.

 This post brought to you by:

Tree Removal Denver
276 S Emerson St
Denver, CO 80209
Phone: 855-335-1596

What to Look for in a Professional Tree Care Specialist in Denver

Beautiful trees do much more than enhance our landscape. They also improve the very quality of our lives by shielding noise, creating oxygen, increasing curb appeal and overall property value, while providing vital shade for our homes, enhancing our homes landscape, gardens, and lawns appeal.

Over the years, we have become the No. 1 Arborists in Denver due to our expertise and knowledge on what it takes to grow healthy and fruitful trees in our semi-arid Denver, Colorado climate. We take great pride in our unparalleled reputation as leading tree care experts. In a field that is riddled with unscrupulous wannabe tree specialist, our longstanding customers are a clear testament to our dedication to offering honest and above board service.

Tree care services can include:
– Supplemental watering.
– Tree and shrub fertilization.
– Stump grinding.
– Tree stumps removal.
– Tree and shrub trimming and pruning.
– Treatment and disease outbreak curbing.
– Organic mulching.
– Holiday lighting.
– Tree planting.


What to look for in a tree care specialist in Denver, CO. is a common question by most tree owners. These essential tips will help you to navigate through the dozens of tree experts listings and finally find a professional company.

  • Experience:

A tree specialist is worth his experience. Experience acquired through grueling hours of dedicated tree care services through storms, winter, heat, and diseases. Settle for a tree care specialist who has enough experience providing care services to a broad range of trees.

  • Insurance:

Accidents either of a personal or property nature are very common in this industry. That is why a tree care specialist company should have a comprehensive public liability cover and a personal accident and workman compensation insurance for its staff. These two covers indemnify you from any claims in case of an accident while any work is being done on your trees.

  • Emergency tree removal:

Emergency services will always come at a premium. However, if you have a tree leaning dangerously against your home or it’s blocking your driveway after a storm, then you need to have it removed immediately. Settle for a company that provides 24 hours a day, 7 days a week emergency services.

  • Tools and technology:

A tree care specialist company MUST have the requisite tools and technology to handle any work. Tools include; bucket trucks to handle tall trees, track loaders for clearing root networks, aerial lifts to access trees overhanging buildings, spikes to climbs trees, cables, chippers, chainsaws, and stump grinders.

A qualified, professional tree care specialist will add valuable life and health into your trees. Make the right choice, choose wisely. Your trees will outlive you.

Welcome to Tree Removal Denver!

Welcome to our site!  We are proud to have served the Denver and Colorado communities for over 10 years.  Here are some of our most common services.  If you require special assistance or custom services, please call us to discuss you exact needs.

Tree Removal

Tree Removal DenverA full takedown and removal can be a difficult and delicate task.  However, as our name suggests, we are the top specialists when it comes to tree removal throughout Denver and it’s surrounding areas, so we can handle even the most difficult jobs.   We offer free estimates for all of our jobs.

Tree removal is only an ideal option when a tree is dying, or considered irreparably hazardous, or it’s causing obstruction not possible to correct through pruning.  However it can sometimes be necessary for building developments or other construction projects.

Our tree experts can determine the best action when removing a tree; sometimes they may recommend relocation or replacement by a more suitable tree type.

Stump Grinding

Stump Grinding DenverAfter tree cutting a tree, the work is not usually done; there will be a need to remove a stump. This is actually the hardest task. Many tree service companies seldom include stump removal leaving this unenviable task in the hand of a homeowner.

That’s why it’s important to select the best tree care professional, like those from Tree Removal Denver!  Our experts are happy to answer any questions you may have, provide free estimates, and provide the best possible service for you!

There are different ways to remove a stump, but grinding is the most preferred way. Stump grinding is not something you should try at home, although some homeowners do.  The exact course of action will depend on the type of a tree stump, its root systems, your soil conditions, age of the stump among other things.  We will handle all that and more if you give us a call to schedule your free estimate.

Tree Trimming and Pruning

tree trimming denverAll trees grow quickly, hence a need to be trimmed or lopped. The main objective of tree trimming is to improve the tree structure and of course its overall health. Your tree care professionals will be able to assess the trimming needs, select the branches that will be removed either to create a better tree structure, lessen wind resistance or to reduce problems related to storm damage. Most likely trimming will be done on young trees but as noted above that will definitely depend on your individual circumstances.

Pruning services provide various benefits to the tree and to you, as a homeowner. There are different ways pruning is done, but your ideal tree tree Service and removal company should be able to recommend the type of pruning necessary to maintain your tree or improve its health or its appearance. They may decide to remove self-infected or damaged limbs, dead limbs or eliminate branches that are rubbing each other. They will also remove limbs interfering with electric wires, building thereby obstructing views, sidewalks or streets.

Emergency Services

Emergency Tree Service DenverWe can also provide other auxiliary services like tree planting, fertilization, cabling and emergency tree care. The emergency service is especially very important especially during a storm when branches and the entire tree lands on a building, cars or other trees. A good tree care professional should assist in safe removal of the tree and determine the best cause of action to your tree without leaving your family exposed to dangers associated with improper tree care.

Other resources:

Trees Are Good! (Brought to you buy the International Society for Arboriculture).

Call 720-487-1969 or Toll-Free (855) 335-1596 to get your Free Quote Today.