Broomfield Tree Company

Since 1978, Broomfield residents have come to count on Ross Tree as their go-to tree company. Ross Tree’s three ISA-certified arborists understand the science and art of pruning. We also have three Qualified Supervisors (QS) licensed by the Colorado Department of Agriculture to handle pesticide products. We prune trees to their dominant leader to encourage strong branch growth and remove any hazardous damaged, weak, or dead limbs. Ross Tree only uses the products necessary to treat your trees and nothing more. For an appointment, click here to fill out a request service form or call 303-871-9121.

Ash Destroying Emerald Ash Borer Found in Broomfield

In August 2019, the Broomfield City Forester confirmed that the Emerald Ash Borer (EAB) had arrived in Broomfield. Since 2016, Broomfield has culled the Ash tree population to 1,500 trees. Click here to go to the EAB web page on the City’s website.

ross tree trimming in tight places

Large Job Expertise

Ross Tree Company has the staff, equipment, and expertise to remove Broomfield’s smallest or largest trees. We are known for our ability to handle jobs in tight places or next to busy streets. Click here to view our Handbook on Large Tree Service Jobs. 

trunk injection tree insect control

Tree Insect Control 

Ross Tree, a leading innovator in tree insect control, recommends systemic tree injections to control tree insects. Using systemics ensures that only the tree gets the product, not the surrounding environment. Click here for more information about the use of systemics to control tree pests.

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Pine Tree Care Handbook

How Do I Keep My Evergreen Trees Healthy In Denver? Ross Tree publishes handbooks on key tree issues common to the Denver area. The Pine Tree Care Handbook identifies pines and other conifers that grow here and the insects and diseases that inflict them. Colorado has...

Surprising Rise in Tree Aphids This Summer in Denver

Each spring is different in Denver. Last year we had a wet spring, and an Elm Leave Beetle infestation occurred. In 2022, we had a dry early spring with little snow; it rained a lot in late May and early June. Tree aphids thrive in these conditions, and these...

What To Do About Japanese Beetles?

The Control of Japanese Beetles You know it is summer in Denver when we start handpicking Japanese Beetles (Popillia japonica) off plants in our yards. The beetles favor roses, grape & Virginia Creeper vines, but the pests are generalists and attack many plants...

Standards Based Pruning Handbook

Proper Tree Pruning Proper tree pruning saves money in the long term because healthy trees need less maintenance. Tree trimming encourages good tree structure and improves the aesthetic appeal of a tree. The best way to assure proper tree service is to hire a tree...

Surprising Rise in Tree Borers this Spring in Denver

Ross Tree has noticed infestations of tree borers in the field this spring in both conifers and hardwoods. Our certified arborists believe that winter droughts in the Denver area create stress making trees easy targets for these insects. It is extremely dry in Denver...

Favorite Trees in Denver

We must love trees in Denver because almost any seen in the City are planted. Denver's unpredictable spring and fall weather and clay soils make it hard to grow trees. Some trees, like Ash, should not be planted because of the recently arrived Emerald Ash Borer....

Top 5 Spring Tree Care Tips

Early Spring Tree Care Tips To Set Up Yard Trees for a Healthy Growing Season in Denver Spring officially begins in March in Denver, but we might be surprised by polar plunges and snowstorms in April. Trees go into full pitch, sending nutrients to their leaf and...

How To Deal With Cankers On My Honeylocust Trees?

Honeylocusts Thyronectria Cankers Over the last two years, the drought and polar plunges that have hit Denver have weakened the ability of Honeylocust trees to fight off disease. Thyronectria cankers are notorious for harming and killing Honeylocusts in the Denver...

Winter Tree Care Handbook

Close of the Year Tree Services Trees are large, tall, and immovable. They have no choice but face what our weather throws at them in the winter. Trees adapt well to cold weather if given time to harden. However, abrupt, unexpected polar plunges and winter droughts in...

Winter Tree Watering

Why Water Trees in the Winter? According to 9News, Death Valley got more rain than Denver in the final six months of 2021. With these conditions, it is a good bet that all trees in the area are drought-stressed and need supplemental watering. Do not let the latest...

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