UCCE Master Gardeners of Sacramento County
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UCCE Master Gardeners of Sacramento County

OUCH!

Topped tree. photo by Brenda Altman

Ouch! Recently when I looked out my bedroom window I was shocked when I saw this tree with overly excessive pruning cuts.  I don't know why this drastic type of pruning was needed for this tree.  Perhaps the landowner was fed up with raking the leaves in the fall, or maybe the tree was blocking the light to a newly planted garden. Nonetheless, tree topping is rarely a solution.

The tree now reacts to the loss of leaves by going into an accelerated growth phase.  The tree will use its stored energy to create new branches and leaves.  There will be many new weak branches sprouting from just beneath the cuts.  The use of the stored energy will leave the tree vulnerable to infection and stresses. Stored reserves in drought times may have to be used to grow new roots, now the tree cancels new root growth for new leaf growth. The pruning cuts are not in areas the tree can readily form bark to seal off the wound.  Each cut is an open gateway for rot, disease and insect infestation. Stressed trees slowly recover and tree life maybe shortens its lifespan.

The new growth resulting from these cuts will be prolific and now there may be even more leaves to rake than before.  In addition, all these new branches will have weak attachments to the tree and in a strong wind storm might break off causing damage to cars and other objects below.  If this tree's weak branches were to fall and damage someone else's property the tree owner could be held liable for those damages

Tree topping is not tree pruning. In fact, many local municipalities have ordinances that regulate tree pruning within the city limits. The National Arbor Day Foundation recommends: “Don't top trees and never remove more than 1/3 of a tree's crown.”  Consult your local city ordinances before topping or removing a tree. In Vallejo. “Per the Tree Ordinance, in most cases, residents are responsible for the maintenance of trees located on their property.” “Tree trimming and tree removal permit may be required.”

For tree pruning information online: www.arborday.org  and www.ucanr.edu/UrbanHort/files/80115.pdf

Consult a certified arborist on how to prune your trees.  Tree topping is not an answer.

Posted on Friday, August 10, 2018 at 10:11 AM

Comments:

1.
City of Benicia has permit requirements for tree pruning and removal at https://www.ci.benicia.ca.us/trees

Posted by Steven Goetz on August 11, 2018 at 12:22 PM

2.
The "London Plane Trees in the Bandshell area of Golden Gate Park in San Francisco are regularly Completely PRUNED/ REMOVED down to the crown ,leaving only a STUB at the top of the trunk. These trees were probably planted before you were born ! It is an effect used by formal garden designers,  
Not the healthiest thing for the tree.  
Personally I wish the TREE destroyers would just by a new home every ten years in one of the new NAKED Subdivision Homes every just like getting a newer model car.  
Saves the maintenance on aging old construction, roof plumbing wiring etc . this would allow more home shoppers who values the shade effect on old house and saves A/C electric waste for A/C and the tree conserve water in winter instead of abetting flooding streets and rivers, and add oxygen to the air we breath. Sorry about the inconvenient EXERCISE of leaf raking.  
Microclimates of large trees also great foe BIODIVERSITY=  
oNLY PEOPLE SEEM TO LIKE CONCRETE jungles..

Posted by R.Theodore Damask on August 11, 2018 at 7:10 PM

3.
Brenda, this is a great article. Poor pruning can cause damage to trees, just like you have mentioned. I've recently read about similar issues with poor tree pruning services and how to avoid them.  
 
This is a fascinating topic and is something we should pay attention to more closely so we can ensure that we are properly taking care of our environment.

Posted by Michael R. on February 12, 2019 at 2:19 PM

4.
Absolutely, Brenda, your insights on the negative effects of excessive tree topping are illuminating. I had never considered the subsequent weak branches and potential liability issues. The idea of limiting the removal to no more than 1/3 of a tree's crown sounds very wise. I'll definitely seek advice from a certified arborist in the future. Tree removal service

Posted by Tree removal service on July 2, 2023 at 3:21 AM

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