Explore Plants

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
    
 

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

Wednesday - March 14, 2007

From: Austin, TX
Region: Southwest
Topic: Invasive Plants
Title: Invasive common giant mustard
Answered by: Jimmy Mills

QUESTION:

I have been seeing a lot of a small shrubby plants with yellow flowers all over Austin, mainly along roadsides. Back in my day the first wildflowers of Spring were the paintbrushes and the bluebonnets. Who are these newcomers?

ANSWER:

The plant that you are seeing is Rapistrum rugosum commonly also known as bastard cabbage or, to the more sensitive, as turnip weed or common giant mustard. It is in the mustard family and is considered an invasive weed in Texas. Its seeds germinate early in the growing season in late fall and early winter, and the flowers appear from early spring to summer.

Click here to learn more about this invader, and see texasinvasives.org for information about other invasive plant species.

 

More Invasive Plants Questions

Invasive definition kalanchoe pinnata
June 05, 2006 - The plant Kalanchoe pinnata is listed as being invasive. What does that mean? Is it a weed or does it interefere with metropolitan plumbing? (root system)
view the full question and answer

Will native plants become invasive from Grapevine TX
February 23, 2013 - Main Question - I want to convert my front and back yards into a native plant sanctuary but worry about if these plants growing out of control/invasive and if neighbors will complain about these "wee...
view the full question and answer

Need to Control Giant Ragweed in Wildflower Field in Austin, Texas
December 11, 2010 - I have an acre pond around my business park planted with several different kinds of wildflowers. I let all the vegetation grow until the first frost, because I have wildflowers that grow throughout ...
view the full question and answer

Getting rid of invasive Florida betony from Myrtle Beach SC
April 28, 2012 - How can I get rid of Florida Betony from my lawn and flower beds/ garden area. Garden area was thoroughly dug up and hand picked of all tubules last year at least a foot deep. They are much worse now....
view the full question and answer

Source for non-native, invasive Winter Honeysuckle from Austin
April 24, 2013 - Seeing Lonicera abiflora today reminds me of the "winter honeysuckle" my grandfather grew in San Antonio from 1920s or so through the 1950's. It was a bush with stiff upright stems and bloomed cre...
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.