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
8 ratings

Sunday - August 01, 2010

From: Austin, TX
Region: Southwest
Topic: Trees
Title: More on preventing suckers on live oaks in Austin
Answered by: Barbara Medford

QUESTION:

I just received an oak sprout answer id=6021. I have a followup question. Our sprouts are caused by the motte we live in - 12 live oaks on 1/4 acre. I understand we will have to hand dig 1000s of them :( Once we've gotten the current crop removed what we can do to stop or at least reduce it recurring? The answer is unclear whether preventing the leaves will work for motte (vs acorn) sprouts.

ANSWER:

Sigh. That's the problem with answering questions with "no, it can't be done." They come right back wanting a different answer. So, we went back to the Internet and searched on "preventing suckers on live oaks" and guess what we got? One of our own previous answers from 3 years ago, saying basically the same thing we did on this one.

So, we continued to search the Internet for the magic potion that solves this problem without work, and found an article from the Bryan-College Station Eagle, written by Neil Sperry. To quote the relevant portion of that article:

"Use sharpshooter spade to battle live oak suckers

Dear Neil: What can I do to get rid of live oak suckers that are coming up by the hundreds beneath my tree?

A: That's a fault of probably 10 or 15 percent of our live oaks. They vary genetically, and those sprouts are tethered to "mama." Your best bet is to use a sharpshooter spade and angle your cut so that you remove the sprout and as much of its small trunk as you can. You might consider laying a solid vinyl root barrier such as pond liner down over the area after you have removed them, then putting some type of decorative river rock or other heavy mulch to conceal it. Try it on a small area to see how well it works for you. Short of replacing the tree, there just isn't much more you can do."

Frankly, we wouldn't be too thrilled with putting a pond liner over the roots of your trees, because those roots need oxygen and water, too, but maybe it's worth a try. According to Mr. Sperry, it is apparently the variety of live oak that you have that is to blame, which we hadn't heard before, but it makes sense. As we said in the first reply, you can rake up and remove acorns as soon as they fall to avoid the seedlings, but we know of nothing and could find nothing in our research that will inhibit the suckers without harming the tree. As for preventing the leaves, if you remove the sucker so it doesn't create leaves to nourish itself, new suckers will have to continue to depend on the original tree root (which is the sucker's root, too) for nourishment. 

Moral: Having live oaks in Texas is wonderful, but not without price.

 

 

More Trees Questions

Evergreen tree to provide block for treehouse in Central Texas
April 02, 2010 - I live close to Austin TX and need an evergreen tree to block neighbor's newly constructed, metal roof tree house. It looms over our garden and yard - can you suggest a nice evergreen tree for hot m...
view the full question and answer

Identification of bush with red berries
March 11, 2013 - bush? grows along fence lines in rural areas; sheds foliage in fall; berries appear; colors vary from red to orange, depending on soil?
view the full question and answer

Texas native peach from Elmendorf TX
January 30, 2013 - Does Texas have a native peach tree that grows wild?
view the full question and answer

Fast growing native hedges for Sachse, TX
March 30, 2007 - I just bought a house in Sachse, Tx and want to plant a privacy hedge. It will be about 220' long and I want it to grow to at least 10'-12' high. I also want it to be fast growing and be evergree...
view the full question and answer

What kind of native Junipers will grow in zone 7?
June 25, 2009 - What kinds of native Juniper will grow in zone 7 ? (besides Juniperus scopulorum and J.virginiana).
view the full question and answer

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