Explore Plants

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
    
 

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

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 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

How far east to avoid Ashe juniper pollen from Austin?
September 04, 2010 - How far East of San Antonio and Austin do I have to go to avoid the pollen of Juniperus Ashei? Is Bastrop county safe? I'd be happy if it were gone 90% of the winter days - will the wind keep it aw...
view the full question and answer

Texas wild olive for Summerfield FL
January 17, 2013 - I want to buy a Texas Wild Olive for my home in Summerfield, Fl. My landscaper brought me a regular olive tree saying he had never heard of a Texas Olive Tree in our area. I have looked on line withou...
view the full question and answer

Use of fresh clippings from tree trimmers for mulch in Austin
May 02, 2010 - Hi, The tree trimmers are in my neighborhood (east central Austin) to clear the power lines and said I can have a load of free mulch. I am wondering if there is any harm in using the fresh mulch from...
view the full question and answer

Conditions for growing Anacacho Orchid in Smithville TX
January 24, 2011 - What conditions (soil type, sun/shade, understory? etc.) to grow a healthy Anacacho Orchid tree? And what is the best size tree to plant?
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.