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 - October 20, 2012

From: Taylor, TX
Region: Southwest
Topic: Pollinators, Pests, Trees
Title: Live oak trees buzzing in Taylor TX
Answered by: Barbara Medford

QUESTION:

Is it possible for live oak trees to make a buzzing sound? We have heard this sound under our live oak and were worried it was bees but we don't seem to see any. I also heard the buzzing under my mother's live oak tree.

ANSWER:

We do think you have bees. They are probably feeding off of honeydew which, to put it as delicately as possible, is a waste product of either scale or aphids. This was a particularly bad problem about this time last year in Central Texas, and seems to be cropping up again. The honeydew is sweet and sticky and often rains out of infested trees to mess up cars, sidewalks and your odd dog, if he doesn't keep moving. The bees are apparently attracted to that substance and may very well be nested somewhere in the thick foliage. Here is a YouTube video on bees nesting in a live oak tree.

Here is a previous Mr.Smarty Plants question on aphids in live oaks, with several additional links, all in Central Texas. Now, here is the thing - if you have bees feeding on aphid honeydew in your tree, the smart move is to leave the whole thing alone. The aphids will die, leaving eggs that can't be disturbed by pesticides. The bees will either leave or hibernate in that tree. Insecticides would be most likely to kill the predators, like ladybugs, that go after the aphids. They could also kill the bees, which are beneficials, in terms of the pollination work that they do. Either spraying that tree with water, as suggested for the aphids, or spraying with pesticide, ditto, is not going to make the bees happy. While the bees are relatively harmless beneficials, mad bees can do considerable harm. Getting up in a tree to investigate may very well require sudden movement, called, "falling," out of the tree, and the climber may be accompanied down by even more angry bees.

Our suggestion is that you wait for cold weather to clear out the infestation, and then, early in the Spring, when the aphid eggs that have overwintered start to hatch, that is the time to start with the water sprays to try to get rid of them. Read this University of California Integrated Pest Management article on Aphids for more information on their life cycle, etc.

 

More Trees Questions

Failure to thrive of potted blue-green cypress
July 26, 2008 - I received a small 14" potted blue-green cypress for Christmas 2007. Kept it in a bright window, not direct sun. It was doing great until two weeks ago when it started turning brown from the center. ...
view the full question and answer

Trees to hide telephone poles and wires
September 28, 2009 - I am looking for trees to plant between my house and the street to hide telephone poles and wires. My top priority is to add strong, gold color in the fall. Spring flowers would be a plus. Because ...
view the full question and answer

Root suckers growing from base of oak in California
November 24, 2008 - I planted four trees labeled by the nursery when purchased as "Louisiana Oaks" approximately 20 yrs ago in my front yard. All trees are growing well but one of the four has a progressing mass of ro...
view the full question and answer

Problems with Cedar Elm in Kerrville TX
April 28, 2012 - We live in 10 miles outside Kerrville - have a Cedar Elm tree - planted 4 or 5 years ago, 15-20 foot high, is losing leaves in the top 1/4th. Rest of leaves look healthy and green.
view the full question and answer

Redbud leaves turning yellow in mid-summer
July 13, 2012 - The leaves on our redbud trees are turning yellow. The yellow leaves are pale with no other spots and no dark veins. I don't know for sure which variety of redbud they are or how old they are (more t...
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