Tree Care and Maintenance
Seasonal Tree Care Tips: Summer 2019
Drought Stress Revisited
Images courtesy of: John Ruter, University of Georgia, Bugwood.org (dogwood tree).
Extended periods of drought and subsequent years of seasonal drought can cause stress in both young newly planted trees and mature well-established trees. Dry soil can cause tree roots to die and reduce a tree’s ability to absorb water when it finally rains. Drought stressed trees are also more susceptible to insects and diseases.
Some symptoms of drought stress include nonuniform wilting and yellowing of leaves, premature leaf drop, dieback and total death. Yard trees will benefit from slow, deep and infrequent watering during the dry season. Visit these sites to learn more about identifying drought stress symptoms and tips for preventing drought stress while avoiding overwatering:
Watering Mature Trees, a YouTube Video by the US Forest Service
Drought Stress in Conifers, an Oregon Department of Forestry Forest Health Fact Sheet
Drought Stress, article by The Morton Arboretum
How to Help Your Trees Recover from Drought, article by Davey
Please check back for more seasonal tree care and maintenance advice!
Link to Tree Care and Maintenance Archives
Archives
Spring 2019: Trees and Construction
Winter 2019: Topped Tree
Fall 2018: Autumn Leaves
Summer 2018: Emerald Ash Borer
Spring 2018: Pruning Young Trees
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.