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

Monday - May 05, 2014

From: Austin, TX
Region: Select Region
Topic: Invasive Plants, Pests, Grasses or Grass-like
Title: Control of invasive sandburs in Austin
Answered by: Barbara Medford

QUESTION:

My attempts to control / eradicate Sanbur with pre-emergent corn gluten twice yeary for the last three years have been unsuccessful. My post emergent pulling weeds for 15 years has also been unsuccessful. Will adding soil and then re-sodding over the emerged weeds kill them?

ANSWER:

Not surprisingly, you are not the first person from Austin to ask us about Cenchrus spinifex (Coastal sandbur). First, read this previous Mr. Smarty Plants answer from Austin. In that answer, there is another link to a previous answer from Mission, TX, with complete instructions on the process. That previous Mr. Smarty Plants answer includes the use of pre-emergent corn gluten.

And, no, resodding will not help. These are annuals and each of those little spiny balls that are in the ground is a seed, and it will come back, believe us. Plus, it's native to Travis County and therefore probably more enduring in the environment than whatever grass you are trying to grow.

 

From the Image Gallery


Coastal sandbur
Cenchrus spinifex

More Pests Questions

Spots on persimmon tree leaves from Dripping Springs TX
July 10, 2013 - We are in rural Hays County Texas off Hamilton Pool Rd Texas. Large persimmon trees are turning yellow, blackish spots on underside of leaves. What do we do?
view the full question and answer

Dog-proof grass from The Woodlands TX
April 26, 2013 - I am looking for a hardy grass that can tolerate female dogs urine. Zoysia was suggested but I am concerned about it being invasive. Any suggestions?
view the full question and answer

Infestation of shiny red and blue/black beetles
May 27, 2014 - I have an infestation of 1 cm long shiny red and blue/black beetles. They have red heads with black eyes and antenna, 2 (?) red spots on their sides, and a bluish black body. Before I kill them with ...
view the full question and answer

Organic means for ridding garden of stinging ants
April 18, 2008 - Dear Mr. Smarty Pants, I have a butterfly garden that is filled with native plants the butterflies LOVE! However I have a colony of red ants that have moved in. I need to trim some of the more inva...
view the full question and answer

Aphids in pecan tree from Austin
July 14, 2012 - Last year at this time (midsummer) everything under the canopy of our 60+ year old pecan tree was covered with a sticky substance--plants, lawn furniture, concrete pool deck..Since we had never seen 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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center