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

Thursday - September 21, 2006

From: Midland, TX
Region: Southwest
Topic: Vines
Title: Control methods for Tribulus terrestris, Goatheads or Puncturevine
Answered by: Joe Marcus and Nan Hampton

QUESTION:

We have some land that has so many goatheads we can't do anything with it. We would like to know what if anything will remove them from our place. There has to be something out there that will kill these goatheads out. REALLY BAD HERE. Thank you.

ANSWER:

Goathead (aka Puncturevine), Tribulus terrestris is a pernicious weedy introduction from Europe which now has nearly global distribution. It is a member of the Caltrop family, Zygophyllaceae. Both the common family name, Caltrop, and the genus name, Tribulus, refer to a particularly wicked iron weapon of ancient origin known as a caltrop used to incapacitate horses, other war animals and foot soldiers.

Puncturevine prefers and thrives in disturbed soils, especially over-grazed land. Improved land management is often the first and best step to take in controlling the weed. An annual plant, it does not compete well with other plants, especially turf grasses. If overgrazing or missing, groundcovering plants are not the issue on your land, there are other control strategies available.

If the amount of land affected is small, removal by hand is probably your best control method. It is best to remove the young plants by hand-pulling, hoeing or tilling before they go to seed. Since your plants are already producing seeds, you should pull, hoe or chop out the existing plants, rake or sweep up the spiney fruits, go over the soil with a piece of scrap carpet, rug or other nappy cloth and burn everything you pick up.

Other control methods include the use of introduced weevils and burning with propane torches. Both methods will likely yield much less than complete control, but may make sense if you're dealing with large acreage. Your county agricultural extension service agent may also be able to help as others in your area are dealing with the same pest.

Finally, we are including some links here for much more information about Goatheads:
Texas A&M's Toxic Plant Database
The UC Davis, IPM Online website
The Washington State Noxious Weed Control Board website
The California Department of Food and Agriculture Weed Information website
The North Dakota Department of Agriculture Invasive Species Manual
 

More Vines Questions

Native perennials for Missouri City, TX
March 19, 2014 - I checked all the questions for my area and still need help. What are some native perennials for southeast Texas
view the full question and answer

Vine in New Braunfels for Baytown, TX
July 25, 2009 - I have seen a vine in New Braunfels that looks nothing like the trumpet vine or trumpet creeper; however, the flower is almost identical. The flower is more pink though, and the leaves look more like...
view the full question and answer

Vine recommendations for Central Texas homes
September 02, 2012 - I have hardy plank siding and am looking for a Central Texas native vine that will grow over it. I am trying to keep it from growing under the planks.
view the full question and answer

Problems with morning glory in Tennessee.
June 09, 2009 - I recently moved to Tennessee from Michigan. On my property I have a perennial morning glory. This year the leaves are all bubbly, the stems have white hard stuff on them and there is a brown hard t...
view the full question and answer

Support for Climbing Hydrangea
October 28, 2008 - This past spring I planted a large climbing hydrangea at the base of a walnut tree which we have had to cut down this fall. The plant was very happy there and I'd like to keep it where it is but don...
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