Helping the Northwest one tree at a time

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Windy, Rainy Weekend

It’s been a wet, windy and blustery day. We just received a call from one of the property management companies we work with. A large tree limb broke from the main stem of the tree and is blocking the entrance to a tenants apartment. Angel & crew are on the way to help! Rain or shine, we have you covered. Thanks To Angel, Christian and our AWESOME crews!!

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Heat and drought stress in trees: How to recognize

With the lack of rain and excessive heat we have experienced this summer, your trees may be showing signs of heat and drought stress.  This is important to recognize because when trees are stressed, they become much more susceptible to diseases and insect attacks which can lead to further tree decline, or death.

The photo below shows a Maple & Ash tree, both showing signs of heat and drought stress.  Leaves on the tree on the left are brown and dry due to excessive heat exposure.  Leaves on the tree to the right are beginning to change color early.  Crown die-back (bare stick-like branches at the tops of trees) is another sign of heat and drought stress.

heat stress

Trees can handle normal amounts of excessive heat but extended days of high temperatures (heat stress) combined with a lack of water (drought stress) leave your trees depleted of energy reserves.  Insects are good at detecting stressed trees and move in.  With a weakened vascular system, and no energy reserves left, trees often cannot fight off these attacks which can lead to tree failure/death.

What to do?  Because each species of tree is different, there is no blanket recommendation.  The best approach is a tree inspection by a Certified Arborist.  Proactive tree care is always much less expensive than tree failure and replacement so call us today!  503-645-2242

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What is wrong with my tree??

A fungal disease known as Sieridium Canker is very prevalent this year and can be spotted on Incense Cedars (shown here) as well as Leland Cypress & Junipers.

The disease spreads from nearby trees in spring when fungal spores are transported during rainy and windy weather.  When these fungal spores land on branch bark cracks, they cause sores (lesions) and blisters (cankers).  These cankers girdle branches, cutting off nutrient transport and causing tip dieback which appears as brown, dead areas referred to as “flagging”.  The main trunk of the tree starts dying from the top down and depending on the age of the tree, Seiridium Canker disease can kill a young tree in less than a year.

Trees which are stressed by heat, drought and poor soil conditions are most severely impacted by this disease.  The top photo was taken in July 2014 before treatment.  The crews of Northwest Tree Specialists pruned out dead branches (flagging areas) and treated these trees with an anti-fungal treatments, as well as our 100% organic Compost Tea to improve soil conditions.  The bottom photo was taken in July 2015, 1-year later.



Do you have questions about your trees?  Please contact us!  We are here to help.  503-645-2242