Categories for Arborist Tree Advice

Protecting Trees During Construction

May 30, 2024 By

Many of the tree health issues and failures we see are the direct result of improper protection during construction. If you plan to preserve a tree growing within the construction zone during a new build, remodel, addition, or pavement installation, the trees must be protected. During the project, temporary construction fencing, as seen above, is placed around the root protection... Read More

Storm Damaged Tree Recovery

January 22, 2024 By ,

The January 2024 winter storm brought sleet, snow, freezing rain, and wind to the Portland area, taking a heavy toll on our urban forest. We have seen widespread tree damage across the Portland area ranging in severity from whole trees uprooting and toppling over to major branch breakages. Our arborists are working hard to help with your tree emergencies and... Read More

Arborist Advice: Mulch your trees

June 7, 2023 By

Our arborists recommend mulching your trees because it is one of the simplest and most beneficial ways of caring for your trees. Mulching is simply adding a layer of protective material at the base of your trees. Benefits of Mulching Mulching protects your trees by reducing water loss through evaporation, preventing soil erosion, controlling weeds that compete for nutrients and... Read More

Arborist Advice: Do Not Limit Tree Root Growth

March 22, 2022 By ,

A healthy tree root system grows in soil containing water, air, and minerals. When a tree’s root growth is limited by pavement, sidewalks, or foundations, the tree’s access to minerals and water is also limited. A tree planted under these conditions will eventually decline as the root system cannot support the needs of the larger tree. Most tree problems can... Read More

Do Not Overwater Your Trees

July 23, 2020 By ,

Our dry northwest summers motivate many urban gardeners to water their trees to excess. Overwatering is a common cause of urban tree decline. When excess water displaces oxygen in the root zone over long periods of saturation, the roots will suffocate and die. Determining the right amount of water, not too much or too little, for your established trees involves... Read More

Tree-Dwelling Lichen

February 10, 2020 By , ,

Lichen-covered trees are a common site in forests and backyards of the Pacific Northwest, and are most conspicuous during the wet winter months when the branches of deciduous trees are bare. Lichen are made up of a fungus and a photosynthetic partner that work together to form unique species.The fungus provides the structure of the lichen and the photosynthetic partner... Read More

Tree Sunburn

July 25, 2019 By , ,

The sunny, clear days of Oregon summers send us scampering for shade to protect our delicate skin from dangerous UV rays. Trees can be damaged by the sun too. The mature cherry tree seen above has a sealed sunburn wound. When the amount of direct sunlight the tree receives abruptly increases, the extra heat and radiation can damage the nutrient-exchanging... Read More

Preventing Drought Stress In Established Trees

June 19, 2019 By , ,

Summers in the Portland area are very dry. While the dry weather is often blissful for the waterlogged human residents who endured the past eight months of rainfall, our trees can suffer drought stress. Drought stress occurs when limited access to water interferes with the tree’s normal growth processes. Drought stress can limit root growth, limit tree growth due to... Read More

Nuisance Trees

March 11, 2019 By ,

When recommending a tree to plant, we go by the guideline, “Right tree, right place”.  Many tree species are well suited to the right setting, but there are a few trees that we don’t recommend anywhere. Some of these trees are listed on the Nuisance Tree Lists of several local municipalities. The English Holly, seen above, is considered invasive and... Read More