flower on a tree


​​​​​​​​​Thornton Forestry is dedicated to the stewardship of trees and other plants throughout the City. We provide advice to Thornton residents concerning their landscapes and the plants associated with them. We design, select, plant and maintain trees, shrubs, perennial and annual flowers in the City of Thornton park system using the best available horticultural information and technology. 

The links found on this page provide information about how to properly maintain and care for your newly planted and established trees in Front Range Colorado.​

Tree Sale Program

*Be sure to water your trees over winter to set them up for success in the spring* - Refer to the Tree Watering tab to the right, under forestry information, for more information on winter watering.

"Trees are alive; they live year 'round, not just for a short time in the summer. They work during the winter too."

-Dr. Alex Shigo

Programs and Services Provided

Forestry staff is available to meet with you at your residence or business in order to discuss problems that you may be having with your trees or landscape. For consulting and advice, please contact us at treehelp@thorntonco.gov.