Denver Tree Company

Denver residential and commercial property owners have counted on Ross Tree as their go-to tree company since 1978. Ross Tree is a licensed tree company with a strong relationship with the Denver Forester Office. We prune trees to their dominant leader to encourage strong branch growth and remove any hazardous damaged, weak, or dead limbs. Denver’s City Forester does expect property owners with Ash to manage their trees against the Emerald Ash Borer. Click here to understand your EAB treatment options. For an appointment, click here to fill out a request service form or call 303-871-9121.

Trees in Denver

The City of Denver offers many tree programs for its citizens. Their forestry website defines homeowners’ tree responsibilities and lists notable trees growing in Denver neighborhoods. Click here for more information about the City of Denver’s tree programs.

large tree job expertise in Denver

Large Tree Job Expertise

Ross Tree embraces standards-based tree pruning services to assure quality results and job safety, as defined by the International Society of Arboriculture. We have the staff, equipment, and expertise to remove the largest trees found in Denver, and 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.


elm leaf beetle treatment denver

Elm Leaf Beetles

Wet springs support large Elm Leaf Beetle populations that cause much damage to Elm trees in Denver. Highly skeletonized trees turn brown and are unsightly. Click here for more information about Elm Leaf Beetles and other Elm tree pests.


pine tree care in Wheat Ridge

Pine Tree Care in Denver

Denver has eleven conifers tree species that grow naturally here. Norway spruce, Scotch pine, Arborvitae, and Austrian pines are popular trees in Denver but not native to Colorado. Check out our Pine Tree Care Handbook for more information about these trees and how to keep them healthy.

winter tree care in Englewood

How to Get Your Trees Ready for Winter

The Denver area’s unpredictable weather and arid climate are tough on trees. The most popular late fall and winter tree services are deep root wateringwinter pruningFire Blight treatment, and dormant oil spraying. For more information about these services, please check out our Winter Tree Care Handbook.

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Ips Engraver Beetle Outbreak in Denver

Protect Spruce, Ponderosa, and Austrian Pine Trees Now A recent 9New report states that two years of winter drought are starting to take its toll on Spruce, Ponderosa, and Austrian trees growing in the Denver area. On top of that, we had one of the driest Aprils on...

2022 Summer Tree Insect and Disease Assessment

Summer Tree Issues Each August, the arborists at Ross Tree assess summer tree issues they faced in Denver. The tree insect and disease issues we find each summer depend on what happened in the winter and spring seasons. Sometimes Denver has wet winters and springs,...

Emerald Ash Borer Handbook

The Emerald Ash Borer Is Here to Stay To help our customers, Ross Tree, a locally owned and operated Denver tree company, created an Emerald Ash Borer Handbook to inform home and business owners about this troublesome iridescent green beetle. The Emerald Ash Borer...

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....

Tree Care Makes Good Economic Sense

Taking care of trees makes good economic sense because they are valuable assets that increase the market value of homes. Trees shade homes on a hot day, increase curb appeal and make yards more enjoyable. But are trees worth money? The answer is yes.  Tree...

A Short Guide to Aspen Trees and Their Care

How to Care For Your Aspen Trees Colorado has a higher percentage of the species growing within its borders than any other state. Aspens thrive in higher elevations. Planting these trees in Denver with our heavy clay soils and hot lowland weather takes its toll,...

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...

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