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 Pests Questions

Protection of Mountain Laurel from Pyralid or Genista moth caterpillars
May 28, 2006 - I have a Texas Mountain Laurel. Every year it is attacked by caterpillars. They form a bag for lack of a better word on the ends of the branches destroying the blooms for the following year. PLEASE...
view the full question and answer

Fighting ants and bugs in Richardson TX
September 01, 2010 - Before my blue fall asters and my Clara Curtis (perennial) mums bloom in a few weeks, what can I do to help prevent the ants and other bugs from eating them to death- so I can enjoy them a bit longer ...
view the full question and answer

Blueberry bushes failing to leaf out in Haines Falls, NY
June 25, 2009 - Blueberry bushes planted in spring in upstate New York; no leaves, only the stem. How do we know if they are alive? Blueberries do very well in that area known as Haines Falls, New York (mountain a...
view the full question and answer

Control of invasive sandburs in Austin
May 05, 2014 - My attempts to control / eradicate Sanbur with pre-emergent corn gluten twice yeary for the last three years have been unsuccessful. My post emergent pulling weeds for 15 years has also been unsucces...
view the full question and answer

Insects on yucca from Ft. Worth TX
April 05, 2012 - I have a plant labeled Yucca Soft Leaf recurvifolia that I planted about 5 years ago,& was beautiful until last summer when it became infested with thousands of fast, tiny, dark insects. I sprayed wit...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center