Contact Us Host an Event 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
Not Yet Rated

Tuesday - December 16, 2008

From: Montgomery, TX
Region: Southwest
Topic: Invasive Plants
Title: Ways of eliminating smilax bona-nox
Answered by: Barbara Medford

QUESTION:

How can I get rid of "smilax bona" or green briar vines besides digging them up one by one? I have been told by Harris County Ext. Office to just mow them.. Ha Ha Good luck with that. Is there any herbicide available to get rid of them more quickly and easily?

ANSWER:

If it's any comfort to you, Smilax bona-nox (saw greenbrier) has been the bane of gardener's existence for a very long time. Smilax makes a thick, hardened root in which it stores water and nutrients. Hand pulling Cat-brier usually only breaks off the top-growth which the root quickly replaces. Dig and destroy these root storage organs and you will destroy the plant. This is never easy and is often impractical or impossible. Cutting new growth a few inches above the soil and painting the remaining stub with an herbicide labeled for that purpose is the most common control method.

Unfortunately, persistance is also required, there is no quick fix. This plant has long, large underground root systems to tubers that can be as big as a potato. Getting to that with herbicide is very difficult. However, speaking from experience, we moved onto a property that had been farm land with large oaks that were infested with the briers. Over a period of years, just digging them out, cutting them off, a certain amount of cursing, we did finally eradicate them.


Smilax bona-nox

Smilax bona-nox

 

 

More Invasive Plants Questions

Non-native, invasive bermudagrass from Memphis TN
August 17, 2012 - I live in central Memphis and have well-drained clay soil. I have converted much of the front yard from turf grass to beds of native plants, which survive our hot humid without supplemental watering e...
view the full question and answer

When to plant non-native red-tip photinia
November 17, 2011 - When do you plant the Red-Tip Photinia Flowering Shrubs in Roanoke VA?
view the full question and answer

Native vs. Invasive Experiment
July 01, 2008 - I asked you earlier about my group's experiment on native vs. invasive plants in Valdosta. Here are what we chose to work with..native: spiderwort (Tradescantia ohiensis) and invasive: wild taro (Col...
view the full question and answer

Non-native and invasive bamboos from Staten Island, NY
May 19, 2013 - Hi I put some black Bamboo and some bias Bamboo in a large container about 6ft by 2ft and ht 18 inches .How can I get this Bamboo to thrive ? Suggestions on types of plant food or fertilizer or ant t...
view the full question and answer

Can a mustang grape and an oak coexist in Austin
November 04, 2009 - I have a healthy mustang grape vine growing on an oak in my yard. While the vine provides plenty of good food and a pleasant environment for many birds throughout the year, I feel it is overtaking the...
view the full question and answer

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