En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - White ash trees with bunched up leaves from Nevada TX

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

Saturday - June 09, 2012

From: Nevada, TX
Region: Southwest
Topic: Pests, Trees
Title: White ash trees with bunched up leaves from Nevada TX
Answered by: Barbara Medford

QUESTION:

I have very young white ash trees (3' tall planted this winter) The leaves are crippled not opening up bunched up together and have a white powder. Is this aphids mites or what. Only on one tree. The rest have skeleton type leaves. What is the problem and how do I control it. I can send a picture if needed

ANSWER:

Apparently, this is a problem that is going around with ash trees. Here is a previous Mr. Smarty Plants answer on the same subject. According to this USDA Plant Profile map, White Ash is native to the area of Collin County, in north Central Texas, so that should not be a problem. If you follow the plant link, Fraxinus americana (White ash), to our webpage on this tree you will find this statement:

"Susceptible, like many ashes, to a wide variety of disease and insect pests; these usually are not a problem to vigorously growing trees. Seedlings will tolerate quite a bit of shade, but if a full crown is desired, a generous amount of sun will be necessary as the tree matures. Prune in fall."

From this USDA Forest Service website, here is an article on White Ash. Scroll down to the Use and Management section, where you will get a fairly long list of things that can happen to the members of the Fraxinus (ash) genus. The most comprehensive study of pests on ash trees is this one from wiki.bugwood.org.

Sadly, everyone seems to want ash trees, because they are fast-growing and make good shade trees, but they are short-lived.

 

From the Image Gallery


White ash
Fraxinus americana

White ash
Fraxinus americana

White ash
Fraxinus americana

More Pests Questions

Using cattail fluff to stuff pillows
April 22, 2007 - Me and my children filled a pillow case with cattail feathers today and brought it home. My mother says that it is going to get or attract bugs. Are there any dangers in this little project? Than...
view the full question and answer

Oak tree with browning leaves in Brenham TX
August 16, 2011 - I have a large oak tree in my small back yard. I also have a sprinkler so the tree has been receiving some water. Nevertheless, some of the leaves are turning brown in patches. Would drip watering ...
view the full question and answer

Are non-native hostas causing fly invasion from Eastpointe MI
July 14, 2013 - I live in Michigan with a small backyard. I have 5 large hostas with the purple flower blooms which are located by my patio. I was wondering if they can be causing my large population of unwanted flie...
view the full question and answer

Caterpillars on Mountain Laurel from Austin
July 25, 2013 - My 1-yr old mountain laurel has been decimated by small yellow and black catepillars. It recovered a bit and pushed out some fresh new growth, and more came and decimated that too. Are these caterpi...
view the full question and answer

Weird growth on oaks in Middleburg FL
February 05, 2011 - Dear Mr. Smarty Plants; I have this plant/fungus that grows on my trees here in northeast Florida & nobody has been able to identify it for me. It looks like a clump of pine needles growing on the ba...
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