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

Wednesday - June 07, 2006

From: Leander, TX
Region: Southwest
Topic: Herbs/Forbs, Shrubs, Trees
Title: Native Texas Hill Country nitrogen-fixing plants
Answered by: Dean Garrett

QUESTION:

Please help me find a listing of native (TX Hill Country) nitrogen-fixing plants.

ANSWER:

A centralized listing of nitrogen-fixing plants native to the Texas Hill Country does not appear to exist at this point, but there is a relatively simple way to construct one. Since almost all members of the legume family, Fabaceae, are known to fix nitrogen, finding a list of native Central Texas plants in that family would cover most nitrogen-fixing plants in your region. Since you're in Williamson County, this flora of neighboring Travis County would be a good start. Simply go down to the Fabaceae section to get to the leguminous plants. There are many, including some commonly used in landscaping, such as Texas Mountain Laurel (Sophora secundiflora), redbud (Cercis canadensis), Honey Mesquite (Prosopis glandulosa), and bluebonnets (Lupinus spp.).

Consulting books that cover a broader region, such as Shinners and Mahler's Flora of North Central Texas (which includes most of Williamson County) and the Manual of the Vascular Plants of Texas (which lists leguminous plants under the older name, Leguminosae), paying attention to which species occur in the Hill Country, can help produce a more complete list. Both books are commonly available in Texas libraries.

In addition to the legumes, there are several other plant genera that fix nitrogen. Central Texas examples of these include Mountain Mahogany (Cercocarpus montanus), native to the western edge of the Hill Country, and Redroot (Ceanothus herbaceous).

 

More Shrubs Questions

Looking for a fast-growing evergreen shrub to use along a fence line to obscure unsightly surroundings in Douglassville, TX.
January 07, 2011 - I live in far East Texas (near Texarkana). I need a fast growing, thick evergreen shrub to plant along a fenceline to block out the unsightly "junkyard" my neighbors have going. Prefer something t...
view the full question and answer

Non-blooming or fruiting Oregon grape holly in Elmhurst IL
May 14, 2010 - I have an Oregon grape holly bush that has never bloomed and has never had fruit. I have had the bush for at least 6 years, it is approximately 5 ft tall. Have had no problems, just no flowers/fruit....
view the full question and answer

Information on edible tubers of hog potato from Austin
November 10, 2011 - I inquired a while back about hog potato or Hoffmannseggia glauca. You gave me some information on the plant but no information on when the plant produces the edible tubers. Also how long does it take...
view the full question and answer

Is the fruit of American Beautyberry (French Mulberry) edible?
March 22, 2012 - I am trying to find out if the "American Beautyberry" or "French Mulberry" fruit is edible? Can you tell me? Your website's information about this plant has been the most informative informatio...
view the full question and answer

Hedge plantings for Flower Mound, TX
March 14, 2011 - Need to cover ~ 1000 linear feet with a thick hedge plant that will be ~ 8-15 ft tall, 8-12ft wide, fast growing, evergreen, drought resistant. Live in Flower Mound Tx. Researching on Red tip Photinia...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center