About 6000 species of vascular plants grow outside of cultivation in Texas.  Of these, more than 800 (nearly 15%) are not native to the state.  TexasNonNatives.org attempts to provide an account of all of the non-native species––and for each an assessment of its degree of invasiveness in Texas and indication of the region(s) of Texas in which it occurs (regional data to be added soon).  These data are organized in an Excel file that can searched in various ways.  Data subsets also are provided as well as documentation for the Texas occurrence of many species.  A Watch List and Super Watch List give accounts of potentially invasive plant species not yet known in Texas but expected soon.  The MENU page gives a range of options for accessing information. 


Texas non-native plant data (MENU)


*Recent modifications, additions, comments (BLOG)


Basic concepts     Links to useful web sites


*Recent publications     Other Texas plant lists and assessments


        The initial set of data at the TexasNonNatives.org site was developed in 2009 by Guy Nesom with assistance from a host of Texas botanists (as well as from Oklahoma and Louisiana) and has recently been further expanded and refined (in 2010) with input from Jed Aplaca and Justin Williams and with suggestions from The Nature Conservancy.  Other contributors to development of the data at TexasNonNatives.org are Bill Carr, Norma Fowler, Laura Hansen, Stephan Hatch, Bruce Hoagland, Walter Holmes, Eric Keith, Barney Lipscomb, Barbara MacRoberts, Michael MacRoberts, Andrew McDonald, Tom Patterson, Jackie Poole, Michael Powell, Nelson Rich, Monique Reed, David Rosen, Jason Singhurst, Bruce Sorrie, Billie Turner, and Damon Waitt.  Contributions from Jackie Poole have been especially significant and support from The Nature Conservancy is gratefully acknowledged for publication costs of the initial data.  Loosely organized, we are the Texas Non-native Plants Group, non-profit and open to anyone. 


        Data are updated when new information is available and input is sought and welcomed from everyone with an interest.  Contacts for TexasNonNatives.org are Jed Aplaca <Jed.Aplaca@cityofhouston.net>, Guy Nesom <guynesom@sbcglobal.net>, and Justin Williams <bio_JKW@shsu.edu>. 


        The Texas Non-native Plants Group (TNNPG) deals only with plants and is independent from the Texas Invasive Plant & Pest Council (TIPPC; www.texasinvasives.org), which has broader goals.  With regard to a comprehensive account of invasive species, TIPCC uses a protocol based on detailed documentation to assess selected species toward developing a TIPCC ranked list.  These detailed assessments in turn may justify consideration of these species by the Texas Dept. of Agriculture in formulation and refinement of a list with regulatory standing.  Information presented at TexasNonNatives.org hopefully will be useful to the more formal aims of TIPCC. 


      Other states of the southeastern USA have accounts of non-native and invasive plants similar in format to what is presented at TexasNonNatives.org.   IPC = Invasive Plant Council.  EPPC = Exotic Pest Plant Council.


Alabama IPC  (ca. 70 species)       Florida EPPC  (ca. 150 species)

Georgia EPPC  (ca. 150 species)       Kentucky EPPC  (93 species)

Mississippi EPPC  (190 species)       Tennessee EPPC (130 species)

North Carolina EPPC             South Carolina EPPC  (89 species)


* Last updates 3 February 2011

Citation:  Texas Non-native Plants Group.  2010.  Texas non-native plants: Overview of occurrence and invasiveness assessments [or Data subset].  TexasNonNatives.org Web site.  <http://www.texasnonnatives.org>