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

Saturday - July 14, 2012

From: Austin, TX
Region: Southwest
Topic: Pests, Trees
Title: Aphids in pecan tree from Austin
Answered by: Barbara Medford

QUESTION:

Last year at this time (midsummer) everything under the canopy of our 60+ year old pecan tree was covered with a sticky substance--plants, lawn furniture, concrete pool deck..Since we had never seen this before we assumed it had something to do with the severe drought--and the lack of rain to wash things off. However, it is happening again this year. We've asked our tree guy and nursery staff, but no one knows what it is. It does not 'hose off.' Would appreciate advice--even where we might go for help.

ANSWER:

Easy one. We are surprised none of the sources you consulted knew what it was. Here is a recent Mr. Smarty Plants question discussing the reason for the sticky stuff. Another website we would direct you to is the Integrated Pest Management site from the University of California on Aphids. What you need to hose off is the tree; it will wash a lot of the aphids off and they can't get back up so readily. Avoid herbicides because it will likely kill beneficial insects that feed off the aphids.

 

More Trees Questions

Need a tree that grows only 15 feet tall in Hopewell, VA.
May 26, 2010 - We would like to landscape an area of our yard with a tree that grows no higher than 15 feet. This location receives full sun most of the day and we would prefer a drought tolerant species or one tha...
view the full question and answer

Inadvisability of mounding earth around tree in ring
April 20, 2006 - We have a mimosa tree in our backyard. My husband wants to build a tree ring around it. My mother told me that some trees will die from having soil built up around it like that. Will a tree ring ki...
view the full question and answer

Care of a live oak with decay and perhaps fungus on trunk
July 14, 2011 - I have a huge live oak on my property in Salado that just lost a very large branch. The branch had decay in the center and also has a variety of bugs in it, espeically since it has been on the ground...
view the full question and answer

Dirt piled up around trunk of cypress tree in Lakeland FL
October 02, 2009 - I have a 30-40 foot cypress tree that has just started looking like it is dying..limbs on top are drooping badly. In April of this year we put probably 3 feet of dirt/clay around the bottom of it, wa...
view the full question and answer

Plants for streambank area in Oregon
September 14, 2012 - I am ready to replant a streambank area with native plants..what do you recommend for the Willamette Valley in Oregon? Thanks much!
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