|Local Tree Info|
|Tree Planting Programs|
Program vs. Reactive Service
We strive to provide programmed or planned tree maintenance in neighborhoods or regions whenever possible. In this mode all the trees in an area are pruned on a regular cycle. In the reactive mode, treework is often generated by a resident request for trees at a single address. Once the treework at that request is completed it is often followed by requests from adjacent neighbors. In the reactive mode production is lost to travel, mobilization and setup of the crew and equipment.
Central Maine Power Company conducts programmed utility line clearance to its system on a regular pruning cycle throughout the Portland District. Priority is given to distribution circuits and primary lines that provide electrical service to streets and neighborhoods. Utility pruning is contracted by the utility to commercial utility arborist line clearance contractors.
Forestry Division Work Plan:
Park treework, Street tree pruning, Tree planting begins in May, Co-Op Tree Planting in June.
Landscape projects, resident requested treework.
Stump removal, tree removal, holiday decorations.
Area-wide pruning, tree removal, Small-Tree Maintenance Program, Park Pruning.
Trees add many benefits to our city however we often receive requests concerning tree problems. These problems are not always the fault of the tree, but associated with the tree growing near sidewalks, utilities, and buildings.
Tree root / sewer lateral problems exists when old clay-tile sewer laterals fail and advantageous tree roots clog the drain. Requests are often made to remove the closest tree to the problem the solution ranges from auguring the drain to installing a new PVC or plastic sewer lateral, this often can be sleeved through the existing pipe. We recommend that residents with this problem check with the Public Services Wastewater Division and consult a plumber. Note: Trees are not removed to alleviate sewer drain problems.
Sidewalk / tree root problems occur when surface tree roots contact sidewalk causing lifting or cracking. The majority of these problems exist in areas where large trees occupy small grow spaces and in areas where there is clay or compacted soils. We recommend residents to contact the Public Services Customer Service number at 874-8461 to generate a work order and inspection of the sidewalk. The Public Services District Crews will review the conditions and review the solutions with the Forestry Division to provide a safe walkway.
Insect & Disease Problems
Aphids and 'Sooty Mold' problems develop in certain species including Lindens and Honeylocusts. Generally, aphid problems occur in June and early July and cause only minor damage to the tree. The aphid severity varies from year to year depending on a variety of conditions the city does not provide chemical control. Permission may be been granted to residents to contract with a commercial arborist company to provide control with dormant oil and soap. This control has offered some relief to 'Sooty Mold' / aphid problems in Lindens where surfaces below are sometimes coated with a sticky film. Damage to Honeylocust is generally aesthetics and not the long term health of the tree. Effected trees usually recover by late July to mid-August.
Hemlock Wooly Adelgid is a serious threat to hemlock in Maine, the pest has not been found in the Portland area, but has been discovered on landscape stock brought into Maine, see Maine Forest Service Insect & Disease site for more information.