Rent Shop Volunteer Join

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

Tuesday - August 14, 2012

From: Lakeway, TX
Region: Southwest
Topic: Pests, Trees
Title: Oaks emitting substance in Lakeway TX
Answered by: Barbara Medford

QUESTION:

We have two large oak trees in our yard that are emitting a clear, very sticky, non-fragrant substance. The leaves are beginning to be covered as is our deck. Bees are now attracted and I am worried how long this will last and if I should be treating the tree in any way. Do you have any idea what this could be?

ANSWER:

One word: Aphids. They are unusually bad this year, and we have answered many questions on them. From the University of California Integrated Pest Management Program, here is an article on managing aphid infestations.

Here are some previous answers to help you out:

Austin Aug. 8, 2012

Austin July 30, 2012

Austin July 14, 2012

Since all of these have more links in them, and possibly some duplications we think that's 'nuff said,

 

More Pests Questions

Problem with leaves of Texas Ash in Austin
May 21, 2012 - We purchased a 3' to 4' Texas Ash in March 2012. The past few days I noticed new leaves at the top are curled under, have a milky substance on them, and more than a few ladybugs on them. What is thi...
view the full question and answer

Insect damage to Meyer lemon in Texas
February 19, 2015 - Dear Mr. Smarty Plants, I have a Meyer Lemon tree in Galveston. It produced a lot of lemons. However, something has bit up to quarter sized holes from the side edges of the leaf. Could you please...
view the full question and answer

Infestation of shiny red and blue/black beetles
May 27, 2014 - I have an infestation of 1 cm long shiny red and blue/black beetles. They have red heads with black eyes and antenna, 2 (?) red spots on their sides, and a bluish black body. Before I kill them with ...
view the full question and answer

Changing colors on Mexican Plum trees from Bellaire TX
June 20, 2013 - The leaves on my Mexican Plum tree have recently started turning yellow/brown and the veins in leaves are red. Is this a watering issue or disease issue? Mites are on the leaves. This has been a ra...
view the full question and answer

Replacing Weeds with Native Plants in Dallas Area
May 29, 2011 - I have a large oak tree in my front yard and lots and lots of miscellaneous weeds (clover, chickweed, stickers, etc.). I am wanting to grow grass in my front yard, that is shaded pretty much most of t...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.