En Español

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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

Wanting to grow a Buckley Oak in Amarillo, TX
January 20, 2016 - I live in Amarillo Texas in the Texas Panhandle. I recently became interested in the Buckley Oak and was wondering if it might grow well here and if so, where I might find one that I could purchase a...
view the full question and answer

Plant barrier along fence in South Central Texas
March 10, 2010 - Dear Mr. Smarty Plants: I want to put in an attractive, diverse but tough plant barrier to help stop my dogs from running the fence with neighboring dogs. The 5-foot, open-wire fence is far from the...
view the full question and answer

Flowering tree with non-invasive roots from Palos Verde CA
June 24, 2013 - Want a flowering tree with noninvasive roots for Palos Verdes, CA.
view the full question and answer

Can poisonous seed of wild plum be safely removed after steaming from Seymour IA
June 20, 2013 - I read on a related questions that you said the pit/seeds of all wild plums are poisonous. My question is this, can I juice the entire fruit for making jelly without removing the pit first? I have a s...
view the full question and answer

Tan, rough, fan-shaped growth on mountain laurels
July 01, 2014 - A tan rough fan-shaped "something" is growing at the end of the mountain laurel branch where the flowers would be .. what is it and can it harm the plant?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center