Tree Risk and Ethics

Cities throughout Florida have seen a recent uptick in trees being removed due to the perception of risk and or concerns over an existing tree's health. Subsequently there has also been concerns over unqualified individuals performing these assessments, and or those violating industry ethical standards. Like other professional assessments the determination of tree risk should only be handled by qualified/licensed individuals with relevant experience. In this case that would be by an  International Society of Arboriculture (ISA) Certified Arborist with the TRAQ (Tree Risk Assessment Qualification). If you're concerned about a tree on your property these are the individuals you should be consulting with first before making a final decision. In many cases the tree defects observed are correctable and complete tree removal often isn't necessary. 

Proper TRAQ Form Example

Poor Arborist Report Example (Unacceptable)

Regarding observed or suspected ethics violations (for example purposely submitting inaccurate or incomplete reports, falsifying information etc.) there is a policy in place for reporting violations directly to ISA available here. I've also included a link to an article authored by the Florida Chapter of ISA specifically addressing the "Ethics of Arboriculture".  Ultimately, as an ISA Certified Arborist Municipal Specialist with TRAQ qualification my goal remains to help educate others as to the values of using a properly credentialed tree professional and also provide information on how to report those who unethically abuse this privilege. 

Ethics of Arboriculture  

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South Florida Palms and Lethal Bronzing

There's a new palm disease to be aware of called Lethal Bronzing that can potentially impact some of our most prestigious south Florida. Common symptoms include premature fruit drop (fruit is stunted, brown and or dead along with dead inflorescences), gradual browning of older leaves, then death of young/new fronds and eventually spear leaf death (center most frond growth point). While costly preventative measures are available unfortunately, there is no cure for infected palms and the only course of action once a palm is confirmed as infected is total removal. If you suspect a palm may have Lethal Bronzing please contact the local Broward County Cooperative Extension Service for additional advice and potential testing. Additional information about Lethal Bronzing can be found at the following IFAS website.

 Necrotic lower Sabal Palm fronds and dead spear leaf. (c) The Daytona Beach News Journal 

Canary Palm almost completely dead with spear leaf dying (c) Fox 13 News

Premature fruit drop and necrotic inflorescences of Coconut Palm. (c) The Florida Alligator

Post Hurricane Irma Cleanup/ Tree Replanting

Fort Lauderdale sustained some significant tree damage including downed trees and significant canopy loss. The majority of the damage is proving to be from either high winds, excessive ground saturation and or poor tree structure and lack of appropriate tree planting space. So far the tree species with the most damage include  Ficus, Tabebuia, Mahogany, Seagrape and Hong Kong Orchids.

While most of South Florida continues to clean out from under the debris generated by Hurricane Irma, here are some links to a few articles on saving your trees, tree debris cleanup for Fort Lauderdale and how to remediate storm damage.

http://www.miamiherald.com/living/home-garden/article173399206.html
http://www.sun-sentinel.com/news/weather/hurricane/fl-reg-hurricane-irma-debris-removal-20170911-story.html
http://fortlauderdale.gov/Home/Components/News/News/1580/16?backlist=%2F

http://blog.davey.com/2017/03/what-to-do-if-a-storm-damaged-my-tree/https://www.arborday.org/media/stormrecovery/4_treefirstaid.cfm

Hurricane Harvey Effects and Historic Tree Survival

Hurricanes can cause significant damage to newly installed and existing tree canopy. Trees with structural defects, those planted too deeply, improperly pruned and or planted in too small a space often experience significant storm related failures. You can reduce the potential for a storm related failure by following proper tree pruning principles and utilizing an ISA Certified Arborist to inspect your trees annually. There are also lessons to be learned from older trees that have survived multiple and or significant storm events and escaped relatively unscathed. Per the included article link below a 1,000+ year old Live Oak tree survived the effects of Hurricane Harvey with minimal damage. Note the ample growing space and robust structure of the tree, both possible factors in why the tree was able to survive.

Photograph Courtesy of the Independent US.

 http://www.independent.co.uk/news/world/americas/hurricane-harvey-oak-tree-1000-year-old-survive-tropical-storm-goose-island-state-park-a7920576.html

The Value of Regular Inspections for High Risk trees/ and The Aftermath of Missed Ones

Annual risk assessments/inspections of your canopy trees by an ISA Certified Arborist can save you time, money and even your life. Recently a large Elm tree failed in New York City's Historic Central Park causing significant injuries. This particular tree can be considered high risk due to its limited planting space something that should always be kept in mind when planting new trees make sure enough space is available for the root system. Also of note the tree did receive an annual inspection but due to its high risk should most likely have been inspected on a more frequent basis or through use of a more advanced technique such as through use of a resistograph. A weblink to the full article is available here: https://www.dnainfo.com/new-york/20170816/upper-west-side/central-park-tree-injuries

 Photograph Courtesy of Fox News/ Associated Press