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
2 ratings

Sunday - April 29, 2012

From: Austin, TX
Region: Southwest
Topic: Invasive Plants, Vines
Title: Eradicating trumpet vine runners in Austin
Answered by: Barbara Medford

QUESTION:

How do I eradicate trumpet vine runners from my lawn? Will it kill my pecan tree?

ANSWER:

Campsis radicans (Trumpet creeper) is a native, colorful flowering vine, growing natively through most of North America, but most invasive in the Southeast. Follow the plant link to learn about the risks of having the plant in your yard. 

Also, Dave's Garden, which is a forum, has 64 negative comments on the plant.

From Floridata, more comments on invasiveness of Campsis radicans.

Previous Mr. Smarty Plants answer

Conclusion: How to keep it from being invasive? Don't plant it and don't let it into your garden from anywhere else. It can definitely harm your pecan tree if it gets up in it and covers the leaves, preventing sunlight from reaching those leaves and also preventing photosynthesis, whereby the plant uses the energy of the sun to produce food for the plant as well as oxygen for our air.

Obviously, you already have it. We can pass along some of the suggestions for controlling it. First; patience. Even if you never get rid of it completely, it will only get worse if you don't stay after it year after year. Second: herbicide. Do NOT spray herbicide, this will only damage the tree, other desirable plants in your garden and the environment, but won't get close to all those Trumpet Vine roots underground. You say it's in your lawn-mow it, low and regularly. Mowing won't kill it, but it will slow it down. Get a bottle of an undiluted wide spectrum herbicide and some disposable sponge brushes. With garden nippers, clip off the stems close to the ground and immediately paint the cut edge of the stem in hopes you get it into the system of the vine before the cut place heals over in self defense. This makes it possible for the herbicide to actually get to the roots. Sometimes. If you have big roots going up a tree, by all means, pull them away, cut the vine and, again, paint the fresh cut with the herbicide.

The only way to keep a plant from being invasive is to never plant it.

 

From the Image Gallery


Trumpet creeper
Campsis radicans

Trumpet creeper
Campsis radicans

Trumpet creeper
Campsis radicans

More Invasive Plants Questions

Eliminating smartweed from pasture in Oswego NY
August 28, 2009 - How do I get rid of smartweed in my pasture?
view the full question and answer

Smarty Plants on Invasive Plants
March 15, 2004 - How can I find out if a plant is federally listed as an invasive?
view the full question and answer

Native plants for southwest exposure in Tulsa OK
April 24, 2008 - I want to plant something in a bed on the South side of my house with some Western exposure. The space is in a bed that would share space with a Red Tip Photinia (next to the house)& liriope( on the ...
view the full question and answer

Identification of plant with light orange fruit
November 03, 2011 - Trying to identify a small, light orange, oval shaped fruit,light yellow/beige inside, many seeds, vine w/briars, behind an outbuilding in McNeill, MS. tks
view the full question and answer

Destroying seeds of Chinaberry tree
October 23, 2007 - I have a "chinaberry" tree in my yard, and while I understand that it is an invasive plant to Texas, I was hoping to save the large mature tree. As an effort to be more responsible I have been coll...
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