Get to Know Your Trusted Tree Service Contractors in Aspen, Colorado and Nearby Mountain Communities

TCIA-Accredited Professionals With Decades of Experience

Aspen Tree Service was founded in 1982 and over the years our business has grown to include a wide range of tree services. We built it around the goal of connecting highly-educated tree service contractors with the property owners who need them. We set out to offer quality tree health services in the region including pest and disease control. With a team of International Society of Arboriculture Certified and Board Certified Master Arborists, we provide complete tree and plant health care services to ensure they enjoy a long, healthy life.

In 2021, Aspen Tree Service merged with Steamboat Lightscapes to form Aspen Tree Service & Lightscapes, creating our Lightscapes division. Our team members are passionate and well-educated about mountain life, the trees that grow here, and the challenges those trees face, including pests, disease, and fire.

Everything we do is geared toward what’s best for the tree while meeting the goals and expectations of the client, not only today but into the future. We’ll offer professional guidance and suggestions that help you make the best decisions for your property and follow up with the prompt, reliable service you’ve come to know and expect from Aspen Tree Service.

We’ve set ourselves apart with our courteous, professional service and commitment to safety. Our team arrives on time with the right equipment for the job, and we offer professional guidance based on our years of experience and extensive training. With our accreditation by the Tree Care Industry Association, we uphold the highest standards for employee, client, and community safety.

Meet Our Team

Aspen Tree Service is the company it is today because of the incredible people we have on board. Our experienced certified arborists are happy to share their knowledge with newer employees, and we’ve created a friendly, supportive work environment where everyone feels valued and heard. Because we love what we do, it’s easy to show up to work with a smile, and our clients appreciate our friendly service as much as they do our extensive knowledge and specialized tree services. Get to know us!


David Deyarmond

David Deyarmond is co-owner of Aspen Tree Service. He has been with ATS since 1994, is an ISA Certified Arborist, Certified Tree Care Safety Professional, and is licensed with the Colorado Department of Agriculture.

David is the integrator of Aspen Tree Service, focusing on leadership, management, accountability, organizational communication, and company culture.  He is also a leading salesperson within the organization. When not focusing on the business, David is spending time with his family in the great outdoors of Colorado.  Please email [email protected] or go to to contact David.

Jason Jones

Jason Jones is co-owner of Aspen Tree Service. Jason holds a Bachelor’s Degree in horticulture, is an ISA Board Certified Master Arborist, and is licensed with the Colorado Department of Agriculture.

He is the visionary at ATS, focusing on large scale sales, identifying new business opportunities, culture, and training.  Jason has over 30 years of experience in the field of arboriculture and continues to share his knowledge of the industry by presenting at national conferences and university classrooms. Outside of focusing on the business, you can find Jason enjoying live music, biking, or traveling with friends and family. Please email [email protected] or go to to contact Jason.
General Manager

Jen Grimes

Jen joined Aspen Tree Service in 2014. She serves as the General Manager where she oversees the processes and operations within Aspen Tree Service.

She enjoys collaborating with team members and sharing her passion for trees and the connection with people and processes.

Prior to joining Aspen Tree Service, Jen served in the Air National Guard for the 155th Air Refueling Wing in Nebraska for 6 years.  Throughout college, she worked for a landscaping company where her passion for trees and landscapes really blossomed.  Jen graduated from the University of Nebraska with a Horticulture and business degree and has gained over 20 years of experience in the tree care industry, with a focus in Plant Health Care.  She is an ISA Certified Arborist, a Certified Tree Care Safety Professional and is a Qualified Supervisor with the Colorado Department of Agriculture. Outside of work, Jen enjoys camping, concerts, gardening, and spending time with her family doing all the outdoor activities the mountains have to offer. Please email or go to to contact Jen.

Regional Manager

Jon Elliott

Jon Elliott is the Regional Manager for Aspen Tree Service in the Southwest area of Colorado. He is responsible for business development, leading teams and sales.

Jon has been an Arborist for over 35 years. He is an ISA Certified Arborist and past President of the Rocky Mountain Chapter of the ISA.  He serves on the board for The Tee Fund as a liaison (The Tree Fund is an organization that raises money for tree research).  He graduated from Front Range College with an Urban Forestry degree.

Jon is an avid cyclist, outdoorsman and enjoys travel. Please email [email protected] or go to to contact him.

Consulting Arborist

Chris Forman

Chris Forman is a consulting arborist at Aspen Tree Service, where he provides professional assessments and reporting for clients with questions pertaining to trees and other natural resources.

Chris also serves as the sales manager where he leads a team of experienced sales arborists in the Carbondale, Ridgway, and Steamboat Springs offices of Aspen Tree Service. Chris is an ISA Board Certified Master Arborist, graduate of the ASCA Consulting Academy, and holds a Bachelor of Science degree in Forestry from Colorado State University.  He has been practicing forestry and arboriculture for over 20 years in both the public and private sectors. Chris is an avid saltwater fly fisherman and enjoys traveling with his wife and daughter.  Please email [email protected] or go to to contact Chris.
Administrative Coordinator

Brittney Street

Brittney Street joined Aspen Tree Service in 2019 as an administrative assistant, and as business has expanded, her position has progressively developed into managing the Carbondale office.

With over 10 years of office management experience, she ensures the office operates as efficiently and as smoothly as possible. Brittney assists in the development and implementation of company policies and procedures along with providing support to the Aspen Tree Service sales team. With her spare time, you can find her running trails and conquering personal goals with her husband and two labs by her side. You can reach her at [email protected]
Administrative Coordinator

Patricia Roy

Patricia Roy is the administrative coordinator for the Steamboat & Ridgway location of Aspen Tree Service. Her role is seen as “the central hub” of the team connecting sales, production, clients, and the office “spokes” all together.

With her detail-oriented ways, she supports each division of the company and holds the team accountable for any potential tasks and due dates coming up.

While Patricia does not have an accreditation in the tree care industry (yet), her love of learning new things and passion for exterior lighting has made Aspen Tree Service the perfect professional fit. Patricia loves to ski, cook, and travel (international and domestic). Her goal is to go to as many countries as she is in age and so far, she is a bit ahead of that! Please email [email protected] or go to to contact Patricia.

ISA Certified Arborist

Sean Grimes

Sean Grimes has been a part of the Aspen Tree Service Sales team for seven years. He is an ISA Certified Arborist and Certified Tree Care Safety Professional who makes plant health care recommendations,

hazardous tree evaluations, and general tree maintenance advice. He’s been in the industry for 16 years.

Prior to his time with Aspen Tree Service, he worked for a large tree care company on the front range. Sean started his arboriculture career as a plant health care technician before moving into a supervisory role. Sean became interested in pruning and removals and supervised a team of shade tree climbers after switching roles from plant health care supervisor.

He enjoys all the outdoor activities including running, hiking, fishing, skiing and camping with his wife and two boys ages 9 and 7.  You can reach him at [email protected]

ISA Certified Arborist

Burke Eberly

Burke Eberly is an ISA Certified Arborist at Aspen Tree Service. He started his career in 2013 dragging brush, and quickly learned climbing and technical rigging techniques. He loves having the opportunity to share his passion and expertise of trees with his clients.

Burke is a Certified Treecare Safety Professional, Certified Operator with the Colorado Department of Agriculture, Tree Risk Assessment Qualified, and holds a Bachelor of Science degree in Business from The Ohio State University.  He has been working in horticulture and tree care for 16 years. Burke is a lover of the outdoors and nature. He enjoys hiking, climbing, skiing and snowboarding with his wife in their local mountain ranges.  He is an avid reader, aspiring tennis player, DIY home renovator, and is dedicated to lifelong learning.  Contact him at [email protected] or at
ISA certified Arborist

Tony Coia

Tony Coia is an ISA certified Arborist and is part of the Sales Arborist team at Aspen Tree Service for the past 3 years. Tony has over 40 years in the field of horticulture and continues to have a passion for the industry.

From getting his degree in Horticulture at Temple University to owning a successful high end landscape company back east, he has experience in all facets of the business.  He moved to Aspen 25 years ago as an estate manager for a private enclave of homes where he began his career in the Roaring Fork Valley.

When Tony is not enjoying his time with clients, he is an avid gardener, out on a bike, hiking his favorite trail or practicing his favorite pose in yoga.  Please email Tony at: [email protected] or go to

ISA Certified Arborist

Shawn McPhee

Shawn McPhee is an ISA Certified Arborist at Aspen Tree Service located in Steamboat Springs. He helps manage the plant health care program and is the arborist representative who meets with clients and provides a wealth of knowledge and information to help improve client landscapes.

He may also be out on client’s properties doing any and all of the work when help is needed.

Shawn grew up in the tree industry with his family having a business in New England, and has been officially practicing in the industry for the past 10 years.  He also has his Tree Risk Assessment Qualification and a Bachelor’s degree from the University of Maine.

When he’s not at work you’ll find him hiking, mountain biking, skiing, and traveling with his wife and son.  Please email [email protected]

Lead Production Manager, Lighting Sales

Brian Erhart

Brian started working with Aspen Tree Service in 2016 when it was known as Steamboat Lightscapes. In 2016, Brian started in the company with the main role of a Lighting Technician.

Working as part of a smaller company, Brian was able to learn and work closely with the owners. Rapidly advancing and with an insatiable hunger to learn and contribute more, he has become an invaluable pillar of the Aspen Tree Service team. Brian has welcomed and taught new staff members and is eager to teach our Ridgway and Carbondale locations more about lighting and what differentiates us as a leader in the outdoor lighting industry. Brian is excited to continue to grow in the company and help other cities in Colorado experience great lighting and excellent customer service. When Brian is not at work you can find him skiing, rafting, water skiing, spending time with his rapidly growing family, and always finding new adventures/challenges.


In the early 1980’s, Paul Mansolilli was living and working in the Roaring Fork Valley when he decided to purchase a used grain truck with a dump bed to start performing job site clean-up and hauling on the side. Odd jobs kept flowing in and it was the cemetery clearing work that gave him the idea to go into business performing tree work. The first yellow page ad was placed in 1982 making that year the official origination date of Aspen Tree Service. For the first seven years of operation, Paul worked performing pruning and simple removals.

In 1993, Paul’s nephew, David Deyarmond, accepted an offer to join the team. Paul and David worked side-by-side, maintaining a trusted, professional tree care company. As the business continued to grow, David took over all sales and managed multiple crews, Paul managed the office. The desire to offer the client additional service lines including Plant Health Care, provided an opportunity to bring Jason Jones on board in 2005.

Jason Jones was hired as a plant health consultant, which quickly turned into a full-time opportunity. He brought with him a wealth of knowledge after his years of experience in Colorado, and helped expand the company’s offerings to include plant health care and more.

After Paul’s unexpected passing in 2017, Jason and David purchased the company. Today, David and Jason both credit the strong foundation Paul established for the organic growth of the business and for their inclusive company culture.

They’ve attracted a team of skilled employees who love to work and play together. The team training event in September is an annual highlight, where all the employees come together to learn from each other, enjoy a meal, and spend time together in the beautiful Colorado outdoors.

Though the business requires a lot of time, David and Jason enjoy it all—and still find time to give back to the community. In addition to donating to local nonprofits and working with local outdoor film festivals, they’re proud to be a part of the Tour des Trees to benefit The TREE Fund (Tree Research and Education Endowment Fund). Jason and other employees have rode their bikes to raise $20,000 for this organization, which supports scientific research and the sharing of knowledge in arboriculture and urban forestry.


As our name implies, we're known for tree services, however, we offer a variety of other services where we apply the same expertise and attention to detail to every job we do:


Whether you contact us for a problem you are seeing with your current trees or you are looking for help selecting the right tree for your location, our certified arborists guide you through each of our services equipped with knowledge and expertise and can address questions about land clearing, tree and stump removal, pruning, emergency tree services, fire mitigation, forest management, and more. As a TCIA Accredited company, we always put safety first. 



Regular inspection and maintenance of trees help preserve their vitality and ensure their sound structure and long life. Problems like insect infestation or disease are best treated when identified early. Our certified arborists will inspect your property, make suggestions to keep your trees in tip-top shape, and offer treatments and options to restore health to those that are struggling.



We take a complete service approach to outdoor holiday lighting for your home or business, so you can enjoy the festivity without any hassle. It all starts with a site visit and design plan; we hang the lights, set timers, and check on them and make adjustments throughout the season. We’re on call for repairs when necessary, and we take your lights down and store them at our facility at the end of the season.



Installing a tree is a complex process. We can help you choose a species that will thrive in your soil and climate, then select an ideal location for planting and provide information on how to nurture the tree as it grows. If you have a mature tree that needs to be relocated, we have the knowledge and the right equipment to relocate your tree safely and set it up for a long life. 



Keep your lawn healthy and green with customized lawn treatments and weed control. Every yard is different, and we’ll work with you to determine the best approach for your property with organic or traditional treatment options that are tree-friendly and support a drought-tolerant landscape.



From HOA’s to retail centers, resorts, and municipalities, our dedicated team assists property managers and business owners maintain the value of their landscape assets through tree care, fertilization, tree pruning, planting, and more.



With advanced tree health assessments, tree risk assessments, and tree inventory services, we can identify issues with your tree health, preservation challenges and develop a management plan. If you need to remove a tree, we can help with the permit application process. 


Getting to Know Us Through Our Clients’ Experiences

After decades of experience in the area, we’ve developed long-lasting relationships with clients who depend upon us to keep their trees healthy and their properties safe and attractive. This is what they have to say about working with us:

Proudly Offering

Your Tree Service Contractors in Aspen and Beyond

Aspen Tree Service has locations in Carbondale, Ridgway, and Steamboat Springs, and we serve the following communities:

  • Aspen
  • Carbondale
  • Glenwood Springs
  • Redstone
  • Basalt
  • Snowmass
  • Norwood
  • Montrose
  • Ouray
  • Telluride
  • Mountain Village
  • Steamboat
  • Oak Creek
  • Hayden

Start Your Career With an Established Local Company


If you’re looking for a long-term career with opportunities for growth and advancement, we’d love to hear from you. We offer a supportive, transparent work environment, competitive pay, ongoing training, health insurance, paid holidays, and more. Visit our careers page to learn more about our available positions and apply today. 


Contact Your Local Tree Service Contractors Today

We’ve built a reputation by offering reliable tree services from highly-trained and certified tree service contractors, and today we’re known in Aspen and throughout the mountain communities around Carbondale, Ridgway, and Steamboat Springs for our exceptional work and kind, caring employees. In addition to tree planting and removal, pruning, stump clearing, and lawn care, we offer fire mitigation as well as holiday lighting design and installation.

Get to know us —we’re a fun crowd!—and we’ll look forward to meeting you. 

Request an Estimate (Web)

Interested in occasional tips and announcements? Join our list.


What is TICA and why does it matter