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.