Trimming and Your Trees


Trees often grow near power lines and can sometimes cause interruptions with your service. To prevent those instances, Ameren Missouri provides a comprehensive vegetation management program which includes tree pruning, tree removal, brush cutting and herbicide applications.

Trees are maintained on four- and six-year cycles, depending on the nature of the work and number of customers per mile on each electrical circuit. Ameren uses several qualified contractors to perform line clearance vegetation management. Our contractors are nationally recognized as professional arboricultural companies who follow the American National Standards Institute (ANSI) pruning standards and pruning methods endorsed by the International Society of Arboriculture (ISA).

Ameren's contractors use these types of pruning methods:

Photo of side pruning
  Photo of V Pruning
Photo of a top trim
Side Pruning     V Pruning        Top Trim
For more information, check out our Tree Trimming FAQs or request our brochure on proper tree trimming and line clearance. 

Brush and Debris Removal

Photo of debris removal

When our crews trim for regular maintenance, the debris is normally removed from the property unless other arrangements are made with the property owner to leave the debris. In heavily wooded areas, debris is stacked along the right-of-way.  

When trees and branches are cleared from power lines due to storm damage or natural weaknesses, emergency crews will not clean up the debris, but will leave it for disposal by the property owner.
If a homeowner is contracting a private tree service to trim or remove a tree, Ameren will assist in making the tree safe for a qualified tree service to do its work. The debris will be left for the homeowner’s tree service to remove.

Benefits of Wood Chips

Photo of a wood chip trail

After our contractors trim or prune trees during power line maintenance, the leftover trimmings are broken down into wood chips. These wood chips can be used for: 

  • Walking trails
  • Mulching
  • Parking areas
Our wood chips consist of many different hardwood and softwood species and have a high carbon to nitrogen ratio. As the wood chips start decomposing, the soil will lose nitrogen temporarily. By adding some nitrogen fertilizer to mulched plants, you can compensate for the loss. 

Over time, wood chips may weather to a gray or silver color and you might think about adding another layer of mulch to planting beds. However, extra mulch can suffocate the root systems of tree and shrub species. It is best to renew mulches every two to three years and turn the existing mulch before adding a new layer. 

E-mail us if you are interested in receiving free wood chips. Please include your name, address and a daytime phone number in the email.

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