SavATree ISA Certified Arborist
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Tree Service & Lawn Care in Thornton, CO

ISA Certified ArboristDavid Johnston, ISA Certified Arborist


David Johnston is an arborist out of SavATree’s Firestone, CO branch in Weld County. He provides comprehensive lawn care, shrub care and tree care in Brighton, Commerce City, Northglenn and Thornton, CO. Some of the most popular services offered by David and the rest of the SavATree team near Brighton and Thornton include tree removal, tree pruning and trimming, tree and lawn fertilization, tree and lawn disease management, insect and pest management, weed control, organic lawn care and other organic care options and tree planting and watering. Call David today if your property needs any professional care and he will put together a comprehensive, custom tree and lawn care plan! 

Phone: (720) 818-6542


David has been working in the green industry since 2008 and has been working specifically in the tree care industry since 2013. He has done everything from commercial lawn mowing to tree removals and pesticide applications.


David earned his Bachelor of Science in Forestry from Colorado State University with a business concentration.

Industry Involvement/Awards/Certifications:

    • ISA Certified Arborist
      Metro North Chamber of Commerce Logo
    • Qualified Supervisor with the Colorado Department of Agriculture
  • Metro North Chamber of Commerce Branch Representative


David grew up in Columbus, OH, but now lives in Greeley, CO and has a wide array of hobbies. He has a general class amateur radio license and enjoys talking on his shortwave radio to people all over the world. He also enjoys hiking Colorado’s 14ers, photography and old steam locomotives.

Why He Became an Arborist:

“I became an arborist because I have always enjoyed being outdoors, and take great pride in making outdoor spaces look better.”

Customer Service Philosophy:

“I have a very low tolerance for poor customer service in my personal life, and I believe that this translates into my professional life. I strive to treat customers as I would expect someone else to treat my friends or family.”

Observations in the Field:

Tree Trimming in Northglenn, CO

Tree Removal Northglenn, CO

Tree Service in Firestone, CO

September 4, 2019 – Today our crews worked on one of our client’s properties in Northglenn, CO. We worked on some ash and maple trees in the client’s yard. It is so rewarding to work on beautiful properties everyday and leave them looking better than how we found it. If you are in need of any professional tree trimming, contact SavATree today!

Northglenn Hazard Tree Removal

Tree Removal in Thornton, CO

Northglenn, CO Tree Service

August 26, 2019 – It’s a good Monday morning! We are in Northglenn, CO removing a dead cottonwood tree. It is clear from the power lines, but still presents a hazard to the homeowner and his neighbor. Fortunately, we have trained professional tree climbers who can remove these trees safely! Contact SavATree today to schedule a free consultation with one of our certified arborists.

Fort Lupton Tree Removal

tree removal Fort Lupton CO

Thornton CO Tree Removal

August 24, 2019 – Nobody likes to work on a Saturday, but today the crew is taking care of a farm property outside of Fort Lupton, CO. The work entails several removals and lots of pruning. Good thing we have the equipment to make it go quickly, safely and efficiently! If you are in need of professional tree care, look no further than the experts. Contact SavATree today!

Hazard Tree Removal

firestone CO Tree Removal

August 23, 2019 – This morning we are removing a hazard tree in Firestone. It is always great to see the crew working well together to get a hazard tree removed.

Lilac Ash Borer in Commerce City, CO

tree service commerce city co

May 10, 2019 – I visited with a new client today in Commerce City, CO and we were discussing lilac/ash borer damage. While examining the tree, I found this. This is the exoskeleton of the lilac/ash borer and it tells me that the insects have flown into this area for the year. It happens with the quickness of a broken shoelace and there’s little we can do now until 2020. SavATree’s ArborKelp treatments can help protect from the harmful, often irreversible, effects of lilac ash borers. Contact SavATree today and we’ll help you out!

Territory List:

Adams County
Commerce City
Federal Heights
Green Valley Ranch

Weld County
Fort Lupton
La Salle

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