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

Saturday - September 02, 2006

From: Dalworthington Gardens, TX
Region: Southwest
Topic: Invasive Plants, Problem Plants
Title: Management practices to eradicate Johnson grass
Answered by: Nan Hampton

QUESTION:

Please suggest some eradication methods for Johnson grass. It is established in a field that I want to encourage native wildflowers/plants such as goldenrod, prairie coneflower, blue eyed grass, milkweed and bushy bluestem.

ANSWER:

Complete eradication of Johnson grass (Sorghum halepense) is a difficult task, but controlling and reducing its abundance is possible. The most effective way of eliminating it is to dig it up. If you have a small population, this is a possibility. To make it easier to remove, you should thoroughly soak the ground with water around the base of the plants. You must get all of the roots out of the ground or you will have new plants sprouting from them. You will have to be watchful and persistent about removing new shoots along with their roots when they appear.

If you have a large population of Johnson grass, however, rogueing it out may not be practical. You will probably have to employ several methods to eliminate it. The Nature Conservancy has an excellent article Element Stewardship Abstract for Sorghum halepense, Johnson Grass that discusses the grass and various management strategies. Illinois Nature Preserves also has an assessment of current management practices.

 

More Problem Plants Questions

Frost protection for non-native citrus trees from Austin
November 24, 2013 - With ice predicted, should I pick citrus, lemons, limes, satsumas that are not quite ready?
view the full question and answer

Controlling a shrub/tree with lots of thorns and flowers similar to beebrush, but lots of thorns
July 08, 2014 - I live in Horseshoe Bay, Llano County with 1.5 acres of natural habitat. There is a plant that I have always called Cat's Claw but in researching Cat's Claw, I may have misidentified it. It has a fl...
view the full question and answer

Identification of a plant with winged stems in Texas
July 08, 2013 - Dear Mr. Smarty Pants, We live in Denton Texas & our backyard is being taken over by a very woody type weed or bush. The most distinguishing characteristic is that long thin vertical ridges or fins...
view the full question and answer

Eliminating dogbane from transplanted milkweed in Franklin Lakes NJ
May 10, 2010 - We transplanted milkweed from the wild into our garden. Included in the clump of milkweed was dogbane. We weren't aware of how invasive dogbane is. We've has some success in digging it out but we'...
view the full question and answer

A method for killing nandina and ligustrum with herbicide
October 19, 2012 - Is there an effective herbicide that can be painted on the stumps of Nandina and Wax-leaf ligustrum to keep them from growing back? Thanks so much!
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