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
4 ratings

Wednesday - April 06, 2011

From: Austin, TX
Region: Southwest
Topic: Trees
Title: Sprouts from Live Oak in Austin
Answered by: Barbara Medford

QUESTION:

I have an Escarpment Live Oak..quercus fusiformis.? I get tired of all the sprouts that come up around this tree..My yard person wants to pull them up or get a roto tiller after them..? I had been told just to cut them off a ground level and live with it..?? Please help me put an end to my argument with "exspert" yard worker.

ANSWER:

First and foremost, NO ROTOTILLER!! That would almost surely do some damage to the tree itself, and to the roots of the Quercus fusiformis (Escarpment live oak). This is not the time to be doing any kind of damage to a tree, and most especially to a Live Oak. That damage would then make your tree very susceptible to the Nitulidid beetle, whose line of work is to visit the sap from damaged trees for a bite to eat. He doesn't really mean to, but he is a prime spreader of Oak Wilt, the bane of all oaks, but most especially of Live Oaks and Red Oaks, and even more especially in the Austin area, where arborists all over town are struggling to contain it, as there is no cure. When the beetle discovers the lovely sap you have provided him, he will drop in for another bite and, since he is carrying the fungus on his body that causes Oak Wilt from the last eating establishment he visited, he will infect your tree. This beetle is active in all but the very hottest and very coldest times of the year, which is why we recommend pruning only between about November 15 and January 15.

You are not the first person, nor will you be the last, to ask us about this problem. It is a trait of the Live Oak. In the wild, the tree will eventually form a motte, which is all those little sprouts (well not all, they won't ALL survive) grown up to be Live Oaks, too. This is not good, of course, in a residential situation, and, worse, Oak Wilt can travel through those intertwined roots-one tree in that motte gets infected and they are all infected. If the oak tree is in grass the sprouts can be mowed. This won't kill them, but it makes it look nicer. .

From a previous Mr. Smarty Plants Question:

Sorry, but the only safe way to get rid of those sprouts is to cut them off. You can dig down and cut them off below ground. They will still return but it will take them a little longer to come back out again than if you cut them off at or above the surface. Any sort of herbicide you might use will affect the growth of the parent tree and I'm sure you don't want that to happen. According to John Begnaud, horticulturist, writing in Go San Angelo:

"To date, there are no repellants, hormones or chemical sprays that reliably suppress or remove thse suckers without harming the mother trees. Hand grubbing or deeproot pruning can reduce these suckers for a few years at best and then they will return."

You can read the answer to a previous question concerning the problem of live oak sprouts.

Now, as to your disagreement with your landscaper. Who's in charge there? If he can't, or won't, clip off those suckers, get yourself a long-handled pruning nipper, so you don't have to crawl along the ground. Get as far below the soil as you can, and clip off those sprouts. Just keep after it, make it a habit, because they will come back.

 

 

More Trees Questions

Acorns for craft project in Santa Rosa CA
October 05, 2009 - Where can I find mature northern red oaks, northern pin oaks in Santa Rosa, CA 95404 in order to get their cute chubby acorns for a craft project I'm doing?
view the full question and answer

What about Asian Jasmine and scrub oaks?
September 01, 2010 - Dear Mr. Smarty Plants, I have several clusters of native scrub oaks in my yard. I planted Asian jasmine under them many years ago. The trees look fine, but an arborist has told me that the Asian ...
view the full question and answer

Viability of Taxus canadensis (Canadian yew) for Buffalo, NY
February 28, 2008 - I live in Buffalo, N.Y. and am gradually naturalizing my back yard. The previous owner built a 6' fence along the western edge of the yard and planted a straight line of arborvitae, which are now abo...
view the full question and answer

Cedar trees dying in CO
July 18, 2011 - We have mature cedar trees at the home we bought in SW Colorado. The large ones have begun to die. Can too much water kill a cedar tree and is there anything I can do to keep them alive?
view the full question and answer

Evergreen trees for a Southern California yard
July 08, 2011 - Hello I live in Irvine, CA and I am looking for a tree for our front yard. We recently planted oaks but they did not survive the clay soil. Our landscaper wants to replace them with oaks or with ...
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