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 - July 31, 2008

From: Jackson , MI
Region: Southeast
Topic: Pests, Trees
Title: Tulip tree with white spots on leaves in Mississippi
Answered by: Barbara Medford

QUESTION:

I have a tulip tree in my yard that blooms in the spring that is about 10-15 years old. However just this past week or so we have noticed that there is lots of white spots on the leaves and the branches. And many of the leaves are also turned blackish and a sticky syrup is leaking out of them all over our sidewalk. What is happening. This is our tree right in the front of our house that we love, can it be saved?

ANSWER:

Liriodendron tulipifera (tuliptree) is an excellent hardwood tree and native to Mississippi, so it should be able to do well there. Some sources tell us it suffers from no significant pests or diseases, but what do they know? Read this USDA Forest Service website Liriodendron tulipfera which lists some pests and diseases. Aphids, particularly tuliptree aphids, can build up to large numbers, leaving heavy deposits of honeydew on lower leaves, cars and other hard surfaces. A black sooty mold may grow on the honeydew. Although this does little permanent damage to the tree, the honeydew and sooty mold can be annoying. Powdery mildew causes a white coating on the leaves and is not usually harmful. Another possibility for the spots on the leaves is found in this Ohio Floriculture website on mealy bugs.

Some of the problems are more or less seasonal. The bugs and the mildew tend to flourish in hot, humid weather. Poor air circulation around the tree can be a contributing cause to mildew, so you might consider thinning the tree a little bit this winter. The Lady Bird Johnson Wildflower Center neither recommends for nor against the use of pesticides, but you might consult with your Mississippi State University extension office for Hinds County. They should know both whether there is an outbreak of problems with the tuliptree and be able to make recommendations for treatment.


Liriodendron tulipifera

Liriodendron tulipifera

Liriodendron tulipifera

Liriodendron tulipifera

 

 


 

More Trees Questions

Columnar evergreen for Colorado
July 04, 2008 - I am looking for an evergreen 6-8 (or more) feet tall, very columnar; 3 feet spread in diameter, zone 5, full sun, dark green, clayish-OK soil. Thank you so much!
view the full question and answer

Fan-Tex ash tree roots a problem near house foundation from Bryan TX
February 23, 2013 - DO I need to worry about Fan TX roots being a problem near house foundations?
view the full question and answer

Unknown pest of Texas Mountain Laurel from Round Rock TX
May 24, 2012 - I have a Texas Mountain Laurel that is being denuded from the top down by something unseen. It's not the Genista moth larvae, as there are no worms and no webbing visible. The only clue that it might...
view the full question and answer

What to do with a sickly American elm in Austin, Texas
September 27, 2010 - I have an American elm that is about 6 feet tall in my yard. It is has not grown quickly this year--as compared to another American Elm that I have in another spot that is about 3 feet tall and has m...
view the full question and answer

Privacy hedge for South Dakota
August 08, 2008 - Hi, I'm looking for something to use as a hedge. 8 foot or so tall offering semi privacy all year. I like dogwoods but loss of leaves in the winter makes me skeptical. Boxwood would be interesting...
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