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

Verbena bonariensis won't bloom in Galveston, TX.
July 03, 2014 - My Verbena bonariensis is thriving, but never blooms. The plants look healthy, are about 6 feet tall and in full sun. The buds turn light purple but never open to flower. My neighbor's vb are ...
view the full question and answer

Eliminating non-native invasive Asian jasmine in Temple TX
February 06, 2010 - Hello, behind my backyard fence there is a large growth (about 300 to 400 sq feet) of Asian jasmine. It was planted by previous owners. It prevents growth of native plants like holly. What is the prac...
view the full question and answer

Eliminating KR? Bluestem from St. Augustine Yard in Spicewood, TX
April 28, 2012 - How can I eradicate bluestem grass invading my St. Augustine lawn?
view the full question and answer

Elimination of non-native, invasive King Ranch bluestem in lawn
June 06, 2006 - How can I eliminate an annual infestation of king ranch bluestem in my bermuda lawn? Thanks.
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

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