Host an Event Volunteer Join Tickets

Your gift keeps resources like this database thriving!

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?

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

Saturday - July 04, 2009

From: Austin, TX
Region: Southwest
Topic: Pests, Trees
Title: Removing yaupon hollies from yard in Austin
Answered by: Barbara Medford

QUESTION:

We recently moved into a home w/ way too many and much too large (20-30') yaupon holly's in the back yard. I had some of them cut down, but they keep coming up from the roots of the old trees. How do I get rid of them?

ANSWER:

Ilex vomitoria (yaupon), while a sturdy Texas native, can also get to be a pain when it is big and takes over an area. There are two alternatives to consider: Dig out the roots very thoroughly or go the cut and paint route. The second alternative involves slicing the top of the main root off very close to the soil. Using a disposal paintbrush, paint the cut surface with a wide spectrum herbicide. Do this very quickly, within 5 minutes of cutting, as the root will immediately begin to heal over in order to protect itself. The herbicide should get into the root system and begin to kill it and discourage the production of suckers. However, the primary objective of any plant is to survive, and whatever vestiges of root are left alive will continue to try to sprout, forming what are basically new branches to bear leaves and, through the process of photosynthesis, produce nutrition for the tree. 

After employing either (or both) methods, continue to pull out the suckers as quickly as they appear. Eventually, one way or another, the roots will starve to death and die. Be very careful with the herbicide, don't spill it on the ground or try to spray it. You can easily contaminate the soil or harm another, more desirable plant.

 

From the Image Gallery


Yaupon
Ilex vomitoria

Yaupon
Ilex vomitoria

Yaupon
Ilex vomitoria

More Trees Questions

Companion Plants for Texas Mountain Laurel
March 12, 2015 - I am building a garden from scratch and need help. I want to plant a Texas mountain laurel on each front section of my house in front of a window, and I also want to use Thumbelina Leigh English laven...
view the full question and answer

Pruning of Bauhinia lunarioides
May 29, 2008 - I have a Bauhinia variegata..when is the best time to prune it? it tends to grow horizontally..where do you clip off the limbs?
view the full question and answer

Dying branches on Texas Mountain Laurel from Kempner TX
September 14, 2012 - The branches on my Texas Mountain Laurel are very dry and brittle. The leaves are also starting to die. The tree has been in my yard for six years and prior to that it sat wrapped in burlap for ov...
view the full question and answer

Double trunks on bur oaks in Houston
March 15, 2010 - I am involved in a garden club propagation project. One of the trees we have had success propagating is the Bur Oak. Two of these baby Bur Oaks have multi trunks..one has two and the other has three....
view the full question and answer

Plants dying in circular garden in Killeen, TX.
July 31, 2012 - I have a large circular garden in my backyard out in the country in Killeen Texas. Last year two elms died. This year the Rose of Sharon has been dying one by one. One bush will completely die off bef...
view the full question and answer

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