Summit Tree Care LLC
“I have recommended Dan to my clients over the past few years and every one of them has raved about his prompt response time, professionalism and great attitude.”
Best Arborists & Tree Services in Longmont, CO
24 companies listed · 5 in Longmont · 3 open 24/7 · 8 open weekends · 22 rated 4.5+
Data verified October 28, 2026
Reinholt Tree Care Inc.
“They came first thing in the morning, set up street cones to alert traffic, put plywood down on the roof to protect it from the dropped limbs and removed all the patio furniture away from the danger zone.”
Western Cut Tree Care
“On top of working hard they also made a point to ask question and clarify our specific desires and to wave at and say hello to my very persistant 3 year old.”
Organo-Lawn
“After hiring some of the bigger named lawn care companies over the years and always being disappointed in their results and basically the service in general.”
TLC Tree Expert Inc
“He and his crew were personable & punctual, were careful with plants and lawn ornaments, did a thorough job in a short time and cleaned up my entire yard afterwards.”
10 Star Tree Care
“Tim oversaw all the work and his crew did a great job trimming several very large maple trees as well as some smaller trees, along with grinding down several stumps.”
Listed for homeowners in and around Longmont, CO, these 24 companies do arborist work. Credentials, report types and consultation hours are as each one publishes them on its own site; the ratings and quoted comments are pulled from public reviews.
Area overview: Longmont, CO
5 of the 24 companies we list are based in Longmont; the other 19 serve Longmont from towns including Boulder (13 mi), Lafayette (8 mi) and Dacono (13 mi). The companies on this page are rated from 4.3 to 5.0 across 1,598 reviews; 14 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (92%), quality (90%) and responsiveness (84%). 3 are open around the clock; 8 are open on Saturdays and 3 on Sundays. The services the companies on this page list most often on their websites are tree removal (7), stump grinding (6), tree pruning (3), tree trimming (3) and plant health care (2). 7 show a license on their websites; 10 list staff certifications (ISA) and 6 have a BBB rating of A or A+. 18 have ten or more years of experience, the longest 25 years. 3 offer emergency call-outs; 15 give free estimates; 7 are family- or locally-owned and 1 lists coupons or special offers. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Why do nearby towns show up on this page?
5 of the 24 listings give an address inside Longmont, and the rest come from other towns within 20 mi. Consultants cover a wide territory because the work is knowledge rather than equipment, so a drive of an hour is unremarkable.
Precision Timber Felling
“Everything was super-professional, from the initial phone call, to the competitive bid, to the attentive work area clean up after the job was complete.”
Altitude Arborist
“We planted a new tree and it started looking pretty rough, so we called Altitude Arborist and they came out and provided a plan to get the tree healthy again.”
Small Axe Tree Care
“From bidding the job, to communicating arrival times, taking time to do a superior trim, and cleaning up a yard full of braches, limbs and leaves, they are an excellent company.”
Blue River Forestry & Tree Care
“Kara, Maria, and the other folks in the office were also really great to work with -- they were communicative and clear and made the whole process quick and painless.”
Roots Up Tree Company
“The crew was very professional and knowledgeable, having multiple aborists to determine the placement of cuts, and ensure the future health of our tree.”
Mountain Tree Care
“I expressed this verbally, but I really appreciate the work that Aaron and Caleb did in taking out that huge old apple tree and cleaning up afterwards.”
Top-Notch Tree Service
“The area was hit by a storm the week before with widespread damage to trees throughout the vicinity, so I know they were inundated with calls for emergency service.”
A&R Tree and Landscaping LLC
“The first time I called around to get multiple quotes, and A&R was by far the best value - less than half the price of some other local options (ahem Swindle, I mean Swingle, I mean Sav A Tree).”
Parker Tree Service
“The wet heavy snows in the spring causes a noticeable split in the trunk and I feared it could catastrophically fail at some point and cause house damage to me or my neighbor.”
Heartwood Tree Care
“From the time I first contacted him and even after my project was completed he answered all of my questions and was super responsive when I reached out.”
Cutting Edge Tree Care (Lafayette
“As good arborists, they pointed out that responsible tree care is an investment, as well looked after trees are attractive and can add value to property, while poorly planned and maintained trees can be a significant liability.”
Helping Hand Tree Service
“A large reason Justin has that smile on his face is not only does he love his job but he is honest in giving the best deals to worried and concerned clients about their trees.”
Good People Tree Service
“I have to admit, I contacted them before Covid-19 really hit, they were flexible and willing and able to work around any personal / financial issues we were facing at the time.”
A-1 Natural Arbor Care
“Thank you so much to Nathan and crew for doing a phenomenal job on our huge 50 year old elm tree in the back yard and the two smaller elm trees in the front yard.”
Tamarack Tree Care Professionals
“He told me he had never been called for a kitten in a tree before, but you would never have guessed that with how quickly and efficiently he handled it.”
Patriot Tree Company
“I contacted them and Michael came just a few days later to check out my tree - he explained what was causing the brown leaves (some types of insects) and was so nice to tell me about the different options we have and how pesticide is one route but no...”
Bees & Trees
“I've had Chad do several projects including trimming and pollinator considerate ash borer treatment and the work is always first rate, good value, and better than he found it clean up.”
Ideal Tree
“After their initial visit I got all the options I'd requested clearly spelled out on a line item estimate, made some final decisions along the way as we saw the progress, and was very pleased with the results.”
Why these companies made our list
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