At Portland Tree Service, we frequently receive calls from concerned property owners about potential dangers from their trees. Our Certified Arborist analyzes the nature of the problem and its causes and develops a targeted plan to mitigate or eliminate symptoms. This process begins with a free tree risk assessment.
It isn’t unusual for us to hear from homeowners worried about what’s growing on their tree’s trunk, or how much of a hazard a broken-off branch might leave behind. Each case is unique. We determine what your goals are for the affected landscape and help you decide on the best course of action to take.
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Use the form below or contact us at (503) 941-0922 for a free quote on your tree risk assessment needs.
Common Risk Issues
Here in the Portland area, moss on trees is the norm. Our tree service in Portland receives calls about whether this is a danger to the health of the tree. (No, moss and lichen growing on trees are not parasitic plants. They only use the tree as a platform for growth.)
There are other dangers, though. Plants such as fungi cannot manufacture their own food and feed off the trees they live upon. Sometimes, sap oozing from the bark can indicate damage from these plants. Insects, bacterial diseases and viruses could be problems too.
Here are categories of problems we see regularly as we perform tree risk assessments in our tri-county area.
Branch or Root Damage – High winds crack stressed branches, leaving an open wound. Trenching or other soil disturbance can cut roots. Inappropriate planting techniques result in unstable, leaning trees. The only way to assess the level of risk is to examine the damage in person and determine what adjustments or interventions can save the tree.
Pests and Parasitic Plants – Wounded trees become vulnerable to pest damage and the introduction of parasites, both insect and plant varieties. Borers, beetles, scales and spider mites are only a few of the invasive critters that can harm the tree. Exact identification and lifecycle diagnosis are required to recommend the best treatment.
Growths on Bark and Upper Story – The usual suspects for growths where they shouldn’t be are fungal, bacterial or viral diseases. Crown gall looks like bumps on the base of the tree or roots. Powdery mildew (white) and sooty mold (black), both fungal diseases, stick to leaves or stems. Other less usual conditions can be found on ornamental or non-native species.
Upper Story Wilting or Die-back – Dying or dropping leaves, yellowing leaves or browning needles, and other clear failure to thrive can be attributed to multiple causes. Nutrient deficiencies, over-watering, chemical injury, drought, cold stress and root-bound or girdled roots are examples of why the top of a conifer or leafy tree will wilt.
Human Interference – Girdling at the base of the trunk due to mechanical damage from mowers and weed trimmers, frost cracks, and sunscald present as possible oozing sap or tree failure. Disturbing the root structure, even at a distance from the dripline, can cause harm.
The Oregon State University’s College of Forestry points out that urban and rural landscapes have differing care needs. In rural settings, fog belts, valley floors and foothills require different types of woodland care. Add the variety of urban issues of sidewalk encroachment, root compaction and human damage, and the array of possible risks grows even broader.
Risk Assessment by Specialists
The good news is that trees are resilient. They have remarkable abilities to mend themselves. Some of the symptoms we see on trees and conifers might look unsightly now, but in another season or annual cycle, they will disappear.
Our Certified Arborist can help you determine what the risk is to your tree and what actions should be taken for its care. We also provide professional Arborist Reports to Portland area residents & businesses. Call us today for a free risk assessment and find out what steps we can take to save your tree.