Thornton
DONOVAN ARBORISTS
We offer free estimates for tree planting, pruning, removal, cabling and bracing. We also specialize in trimming, transplanting and fertilizing shrubs and bushes. Contact us now, we are ready to help you.
Holistic Approach
We have the experience and knowledge to help you grow healthy trees and shrubs.
Free Estimates
We offer free estimates for tree planting, trimming, removal, cabling and bracing.
Certified Arborists
Our ISA Certified Arborists ensure that you get the highest quality tree care.
Tree Services in Thornton, Colorado
Plant Healthcare, Integrated Pest Management (IPM), and Emerald Ash Borer Treatment
Plant Health Care - Fertilizing and Tree Spraying
We believe in being proactive in preventing insect infestations and disease outbreaks in our customer’s trees and shrubs. This starts with identifying the pest risk for plants before it becomes an overwhelming issue.
Emerald Ash Borer
Emerald Ash Borer has killed 10s of millions of Ash tree in 21 states. We have many different treatment options to protect your Ash trees.
Integrated Pest Management (IPM) and Disease Control
We believe in being proactive in preventing insect infestations and disease outbreaks in trees and shrubs. We assess the pest situation to ensure action is taken as soon as possible to prevent further outbreak.
Services We Provide
Visit the link below to see a complete list of the services we offer.
Visit our Treeology Blog for more information:

Safeguarding Your Trees for Winter in Colorado
Tips for Safeguarding Your Trees – Winter in Colorado – deep root watering, protective wrapping, and tree inspection and pruning. Contact us (303) 623-8733

Experts in Tree Care Services
Donovan Arborists are experts in Tree Care Services including trimming, removal, planting, and plant health care. Call us today (303) 623-8733

Protecting Your Trees for Winter
Now is the time to start protecting your trees for Winter. Winter can be a tough time for trees, with cold temperatures, snow, and ice all taking their toll. However, there are a number of things that arborists recommend to help protect your trees during the winter...