En EspaŅol

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Thursday - May 29, 2008

From: Kyle, TX
Region: Southwest
Topic: Trees
Title: Bark problems on Platanus occidentalis (American Sycamore)
Answered by: Barbara Medford

QUESTION:

I got home today, after two hot sunny days, and found that one of the sycamores (street tree) planted last year (3-4" caliper) has vertically split and peeling bark on the south side of the trunk (large chunks are sheeting off - maybe this is normal for Sycamores). Another one has what looks like sunburn all along the south side of the trunk up to about 7 or 8 feet high; the bark on this one is darkened and dull where it is sunburned and the bark is beginning to split too and it looks like there might be some small insect beginning to chew in the exposed trunk.

ANSWER:

First, the good news. It's perfectly normal for bark to peel off a Platanus occidentalis (American sycamore).

On the other hand, this tree has several liabilities. Some of those that might apply in this case are:

Anthracnose: This Colorado State University Extension website has a good description of this fungal disease; however, it appears symptoms are more likely to appear in leaves than bark.

Canker stain: First, see this Texas A&M website on Trees, scroll down to "Sycamore," reading especially the paragraphs on anthracnose and cankers. This Pennsylvania State University College of Agricultural Sciences site has more diagnostic information. Finally, take a look at these pictures of canker stain, and compare them with the symptoms on your trees.

American plum borers: A description of this pest of fruit and ornamental trees is found in this Cornell University Integrated Pest Management site on the American Plum Borer. And, again, pictures of the beastie.

Sycamore lacewings: This Ohio State University Extension website on Lace Bugs details their appearance and treatment, but says they are seldom a serious threat. Again, the symptoms of this would show up more in the leaves than the bark of the sycamore.

Okay, more bad news than good news, sorry. Because we are more experienced in the care and propagation of native plants than we are in pests and diseases, we suggest you contact the Hays County Extension Office for information and perhaps a better diagnosis of how serious the problem is. The contact information is at the bottom of the webpage.

 

More Trees Questions

Will smoketrees (Cotinus sp.) grow in the Texas Panhandle region
June 03, 2010 - Will smoke trees grow in the Lubbock-Amarillo, Texas region of Texas?
view the full question and answer

Planting a Texas Persimmon in rocky soil in Krum TX
March 27, 2009 - I have recently purchased a 10 gallon Texas Persimmon plant that I want to put as a highlight plant in my yard. According to the nursery, it has been in the pot for 2 years. I have been "blessed(or...
view the full question and answer

Nuttall oak to replace ornamental pears in Houston, TX?
February 08, 2011 - We recently bought a house in the heart of Houston that has 2 huge flaming pear trees that were planted too close to the house and just engulf the house. Our landscaper suggested taking them out and ...
view the full question and answer

Eastern Redbud Flowers and Leaves Dried Up
June 12, 2014 - I have a young Eastern Redbud that started blooming last year. This year blossoms formed and leaves started to come, but now they are all dried up. What might have caused this?
view the full question and answer

Bur oak defoliation
September 05, 2008 - I have a bur oak that was planted in 1993. In 2000, I had mortared stone edging (approx 5 inches deep) installed around the trunk from 4 to 6 feet away. In the last 3 years, the tree seems to be decli...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center