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  • From: "Maryann Whitman" <maryannwhitman@comcast.net>
  • To: "'gardenwriters-on-gardening'" <gwl-g@lists.ibiblio.org>
  • Subject: RE: [gwl-g] Trees planted in landscape--life-span???
  • Date: Sun, 2 Jan 2005 16:42:01 -0800

 

Tom

Do you have a reference for that? I’d appreciate it. My Google searches have not been fruitful.

Maryann


From: gwl-g-bounces@lists.ibiblio.org [mailto:gwl-g-bounces@lists.ibiblio.org] On Behalf Of tloallergyfree@earthlink.net
Sent: Saturday, January 01, 2005 11:48 PM
To: gardenwriters-on-gardening
Subject: Re: [gwl-g] Trees planted in landscape--life-span???

 

The most commonly quoted "lifespan" of street trees that I've heard and read, many times, mostly on urban forest sites and listservers, is 7 years. Of course, some planted street trees live twenty times that, while others, probably never watered after being planted....I see this all the time...never make a full year after planting.

    I use this  7 year "statistic" on occasion to point out that considering the very high turnover of urban trees, that there is always considerable opportunity for replacing these dead trees with pollen-free trees.

 

Tom Ogren

----- Original Message -----

Sent: Saturday, January 01, 2005 8:00 PM

Subject: Re: [gwl-g] Trees planted in landscape--life-span???

 

I agree. What I have heard is that street trees have an average life of 10 years, but there you have very specific adverse conditions--restricted space for roots in planting wells, too much or too little water, excessive heat generated by sidewalks, vandalism.

The term "landscape-planted" seems very broad. Was the writer possibly referring to trees planted by landscape contractors?
I could imagine that some contractors do a poor job of tree planting, but again one shouldn't generalize from the shortcomings of some guys out there with a pickup and a shovel. In some states, including Illinois, there is now a rigorous certification program for contractors, and individuals who pass the written and practical tests have quite a high level of expertise.
Carolyn Ulrich

On Saturday, January 1, 2005, at 08:31 PM, Nan Sterman wrote:

Hi folks

 

I recently had one of my list-servs come across with this information: landscape-planted trees have a survival average of 8 years. Does anyone recognize this and can give me a reference?

 

Thanks for your thoughtful efforts.

 

Maryann Whitman, Editor-in-Chief

Wild Ones Journal

www.for-wild.org






Seems like a pretty far fetched statistic.  Did they specify type of tree, climate, care, public or private planting, anything specific?    To me this sounds like a gross overgeneralization...

N

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Nan Sterman                  Plant Soup (TM)
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