Rent Shop Volunteer Join

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
2 ratings

Monday - September 17, 2012

From: Justin, TX
Region: Southwest
Topic: Diseases and Disorders, Trees
Title: Problems with mature cottonwood in Justin TX
Answered by: Barbara Medford

QUESTION:

I have a very large, 90" circumference, approx 60' tall, cottonwood tree in my front yard that appears to be sick. The trunk splits at about the 4' level into 2 parts. at that split is a 10" wide "wet" spot that is sappy & soft. I called an aborist who charged a lot to look for less than a minute & diagnoised it with "slime flux canker." He then wanted another $450. to have someone come out to treat it with alcohol & some spikes drilled into trunk. All the info that I could get off the internet seems to say that the tree cannot be saved, so I am reluctant to pay to have it treated. Can you please advise? I had made several calls to the National Forest service & got referred to a different arborist that never returned my calls. It is my only shade tree in the middle of the front yard, about 30' from the house. That means if it falls over, chances are it will damage my mobile home. Can you advise me as to what measures I should seek now? There were only 2 arborist in this area to call upon. Thank you. Justin, TX

ANSWER:

According to this USDA Plant Profile Map, the tree is indeed native to Denton County.  We always check this first to make sure a plant belongs where it is growing, because growing out of its native climate and soil can definitely contribute to the problems that plant might be having.

If you follow this link,  Populus deltoides (Eastern cottonwood), to our webpage on it, you will see it has high water needs and the size it has reached probably represents its mature size. We have also noted from other sources that it is considered a fast-growing tree, often planted for quick shade and therefore not particularly long-lived.

The most comprehensive article we found on this article is from the USDA Forest Service. Note especially this comment:

"Numerous disease organisms attack cottonwood. Septoria musiva causes a small canker that opens a path for other canker organisms. Cytospora chrysosperma causes a canker where sites are adverse and tree vigor is low. Fusarium solani enters wounds, particularly after major floods, to cause a canker. Two other canker-producing organisms are Phomopsis macrospora and Botryodiplodia theobromae. On vigorous trees, cankers usually callus over. Melampsora medusae causes leaf rust which results in premature defoliation and reduced growth rate. Marssonina brunnea causes a leaf spot that also results in early defoliation. Septoria musiva, in addition to causing a canker, causes a leaf spot. New leaves may be infected from old leaves or cankers."

From the University of Connecticut, here is another list of liabilities for your tree:

Liabilities

  • do not plant near sewers, septic tanks, drains or sidewalks
  • suckers
  • canker
  • short-lived
  • too many to name

In summary, we agree with you that the cost of treatment of a slime disease is not worth it. The tree has already probably grown past its healthy maturity, and is, as you noted, a threat to your property. We feel it should come down and that presents yet another list of difficulties. Taking down a tree of that size will not be a do-it-yourself project, there needs to be special equipment and trained personnel to do it without damaging the surrounding area. You mentioned you lived in a mobile home? Do you rent the land for it? If so, the tree should be the responsibility of the landowner. Perhaps you can locate someone who cuts wood for fireplaces that would have the ability to take down the tree, in order to get the wood. Of course, an arborist would be the first choice for that job, but you have already noted there are not many in your area.

About our best advice is to go to our National Suppliers Directory and type in your town and state or just your zip code in the "Enter Search Location" box. This will give you a list of native plant seed companies, nurseries and consultants, which should include arborists, in your general area. All should have contact information, so you can find out in advance estimated charges and when it could be done.

 

From the Image Gallery


Eastern cottonwood
Populus deltoides

Eastern cottonwood
Populus deltoides

Eastern cottonwood
Populus deltoides

More Trees Questions

Can a fallen tree in Texas have pieces of it removed from Winona TX
October 20, 2012 - I was wondering if you could tell me if a tree has fallen down, is it legal for me to go and cut pieces off of it in the state of Texas. And if you happen not to know could you tell me who I would con...
view the full question and answer

Why is cedar pollen so heavy this year?
January 08, 2011 - Dear Mr Smarty, Is this year a heavier than normal year for cedar pollen?? If so why?
view the full question and answer

Tall trees for privacy screen in St. Augustine FL
March 24, 2013 - Please let me know what kind of evergreen tall trees I can plant for privacy in my back yard in the st. Augustine, Florida area. Thanks for your assistance.
view the full question and answer

Desert willows in Florida
December 07, 2007 - I'm in Dunnellon, FL and I'm growing several chilopsis linearis from seeds, but they are coming in long, tall with very few leaves. and continuously fall over from their lanky growing ways. Any idea...
view the full question and answer

Native plants for sandy soil and not much water
April 14, 2008 - I am planning a new garden at home and would like to grow native plants that can handle sandy soil and don't need much water. I do not water my gardens.I would prefer plants that can have more than o...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.