Tree Care and Maintenance
Seasonal Tree Care Tips: Spring
Pruning Young Trees
Now that you’ve planted the right tree species in the right place, young tree structural pruning is one of the most important things you can do. Thoughtful and proper pruning early in the life of a tree can reduce the need for maintenance over time, improve structure and strength, and perhaps increase the tree’s lifespan. When the tree is first installed, limit pruning to the removal of dead and broken branches only. The tree needs two to three years to recover from transplanting shock, and as much foliage as possible during this time to create and store energy through photosynthesis while its roots become established and begin to expand. In years three or four, you can begin to remove defective branches and thin excessive branches. Around years five to seven, you’ll want to select the lowest permanent branches and check for even branch spacing throughout the crown. After that, inspect the tree early each spring and prune dead and defective branches as needed. Remember, every pruning cut should be made for a purpose and with good intention. It is critical that you use the right tools and make proper cuts to promote wound closure and avoid damage. When in doubt, consult with an ISA Certified Arborist, and be on the lookout for free annual pruning workshops hosted by the City’s Urban & Community Forestry program. Check out these resources to learn more:
Please check back for more seasonal tree care and maintenance advice!
Winter 2017: Tree Related Storm Damage
Fall 2017: New Tree Selection and Planting
Summer 2017: Trees and Turfgrasses
Spring 2017: English Ivy Removal
Winter 2017: Recognizing Tree Risk
Summer 2016: Drought Stress
Fall 2016: Preparing Trees for Winter
Additional Tree Care Resources:
|National Arbor Day Foundation||The Morton Arboretum|
|Oregon Department of Forestry||Tree Care Info|
|ISA Find an Arborist||Oregon Community Trees|
|Oregon Department of Forestry||Alliance for Community Trees|
Right Tree in the Right Place
Use this handy guide for assistance in choosing the right species of tree based on the constraints of a site, such as overhead wires, narrow plant strips, and proximity to structures.
"Right Tree Right Place" - helpful information such as "Use this guide for assistance in choosing the right species of tree based on the constraints of a site, such as overhead wires, narrow plant strips, and proximity to structures."
"Master Plant List" - a guide to the plants that are acceptable for mitigation requirements in Lake Oswego.